./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/goblint-regression/06-symbeq_02-funloop_norace.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e2fb8bed Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/goblint-regression/06-symbeq_02-funloop_norace.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/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 ebedbc62bd44b0c214a81c07c6f99e850a5d96675b77716f8547d1b39e8b2cf8 --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-09 06:33:19,910 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-09 06:33:19,964 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-03-09 06:33:19,968 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-09 06:33:19,968 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-09 06:33:19,987 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-09 06:33:19,988 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-09 06:33:19,989 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-09 06:33:19,989 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-09 06:33:19,989 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-09 06:33:19,989 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-09 06:33:19,989 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-09 06:33:19,989 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-09 06:33:19,990 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-09 06:33:19,990 INFO L153 SettingsManager]: * Use SBE=true [2025-03-09 06:33:19,990 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-09 06:33:19,990 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-09 06:33:19,990 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-09 06:33:19,990 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-09 06:33:19,990 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-09 06:33:19,990 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-09 06:33:19,990 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-09 06:33:19,990 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-09 06:33:19,990 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-09 06:33:19,990 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-03-09 06:33:19,990 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-09 06:33:19,991 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-09 06:33:19,991 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-09 06:33:19,991 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-09 06:33:19,991 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-09 06:33:19,991 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-09 06:33:19,991 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-09 06:33:19,991 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-09 06:33:19,991 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-09 06:33:19,991 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 06:33:19,991 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-09 06:33:19,991 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-09 06:33:19,991 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-09 06:33:19,991 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-09 06:33:19,991 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-09 06:33:19,991 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-09 06:33:19,991 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-09 06:33:19,991 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-09 06:33:19,991 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-09 06:33:19,991 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-09 06:33:19,991 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/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 -> ebedbc62bd44b0c214a81c07c6f99e850a5d96675b77716f8547d1b39e8b2cf8 [2025-03-09 06:33:20,194 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-09 06:33:20,200 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-09 06:33:20,202 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-09 06:33:20,203 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-09 06:33:20,203 INFO L274 PluginConnector]: CDTParser initialized [2025-03-09 06:33:20,204 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/06-symbeq_02-funloop_norace.i [2025-03-09 06:33:21,344 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a611d782/b42d07c96b45444baaf82c5a91aeb36b/FLAGd234394ea [2025-03-09 06:33:21,588 INFO L384 CDTParser]: Found 1 translation units. [2025-03-09 06:33:21,589 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/06-symbeq_02-funloop_norace.i [2025-03-09 06:33:21,597 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a611d782/b42d07c96b45444baaf82c5a91aeb36b/FLAGd234394ea [2025-03-09 06:33:21,905 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a611d782/b42d07c96b45444baaf82c5a91aeb36b [2025-03-09 06:33:21,907 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-09 06:33:21,908 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-09 06:33:21,909 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-09 06:33:21,909 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-09 06:33:21,913 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-09 06:33:21,913 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 06:33:21" (1/1) ... [2025-03-09 06:33:21,914 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58c17987 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:33:21, skipping insertion in model container [2025-03-09 06:33:21,914 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 06:33:21" (1/1) ... [2025-03-09 06:33:21,935 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-09 06:33:22,182 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 06:33:22,207 INFO L200 MainTranslator]: Completed pre-run [2025-03-09 06:33:22,255 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 06:33:22,301 INFO L204 MainTranslator]: Completed translation [2025-03-09 06:33:22,302 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:33:22 WrapperNode [2025-03-09 06:33:22,302 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-09 06:33:22,303 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-09 06:33:22,303 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-09 06:33:22,303 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-09 06:33:22,308 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:33:22" (1/1) ... [2025-03-09 06:33:22,318 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:33:22" (1/1) ... [2025-03-09 06:33:22,335 INFO L138 Inliner]: procedures = 263, calls = 70, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 133 [2025-03-09 06:33:22,336 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-09 06:33:22,336 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-09 06:33:22,336 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-09 06:33:22,337 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-09 06:33:22,345 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:33:22" (1/1) ... [2025-03-09 06:33:22,346 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:33:22" (1/1) ... [2025-03-09 06:33:22,348 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:33:22" (1/1) ... [2025-03-09 06:33:22,363 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]. [2025-03-09 06:33:22,363 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:33:22" (1/1) ... [2025-03-09 06:33:22,364 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:33:22" (1/1) ... [2025-03-09 06:33:22,372 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:33:22" (1/1) ... [2025-03-09 06:33:22,372 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:33:22" (1/1) ... [2025-03-09 06:33:22,373 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:33:22" (1/1) ... [2025-03-09 06:33:22,374 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:33:22" (1/1) ... [2025-03-09 06:33:22,377 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-09 06:33:22,377 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-09 06:33:22,377 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-09 06:33:22,377 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-09 06:33:22,378 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:33:22" (1/1) ... [2025-03-09 06:33:22,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 06:33:22,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:33:22,403 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-09 06:33:22,407 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-09 06:33:22,420 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-03-09 06:33:22,420 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-09 06:33:22,421 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-09 06:33:22,421 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-03-09 06:33:22,421 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-09 06:33:22,421 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2025-03-09 06:33:22,421 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2025-03-09 06:33:22,421 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-09 06:33:22,421 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-09 06:33:22,421 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-09 06:33:22,422 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-09 06:33:22,521 INFO L256 CfgBuilder]: Building ICFG [2025-03-09 06:33:22,523 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-09 06:33:22,760 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-09 06:33:22,761 INFO L307 CfgBuilder]: Performing block encoding [2025-03-09 06:33:22,989 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-09 06:33:22,990 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-09 06:33:22,990 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 06:33:22 BoogieIcfgContainer [2025-03-09 06:33:22,990 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-09 06:33:22,992 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-09 06:33:22,993 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-09 06:33:22,996 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-09 06:33:22,997 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.03 06:33:21" (1/3) ... [2025-03-09 06:33:22,997 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e22633e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 06:33:22, skipping insertion in model container [2025-03-09 06:33:22,998 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:33:22" (2/3) ... [2025-03-09 06:33:22,999 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e22633e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 06:33:22, skipping insertion in model container [2025-03-09 06:33:22,999 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 06:33:22" (3/3) ... [2025-03-09 06:33:23,000 INFO L128 eAbstractionObserver]: Analyzing ICFG 06-symbeq_02-funloop_norace.i [2025-03-09 06:33:23,011 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-09 06:33:23,013 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 06-symbeq_02-funloop_norace.i that has 2 procedures, 37 locations, 1 initial locations, 3 loop locations, and 10 error locations. [2025-03-09 06:33:23,013 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-09 06:33:23,049 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-09 06:33:23,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 40 places, 39 transitions, 82 flow [2025-03-09 06:33:23,098 INFO L124 PetriNetUnfolderBase]: 3/38 cut-off events. [2025-03-09 06:33:23,101 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-09 06:33:23,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42 conditions, 38 events. 3/38 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 68 event pairs, 0 based on Foata normal form. 0/25 useless extension candidates. Maximal degree in co-relation 30. Up to 2 conditions per place. [2025-03-09 06:33:23,105 INFO L82 GeneralOperation]: Start removeDead. Operand has 40 places, 39 transitions, 82 flow [2025-03-09 06:33:23,107 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 39 places, 38 transitions, 79 flow [2025-03-09 06:33:23,117 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-09 06:33:23,127 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;@a3c2d38, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-09 06:33:23,128 INFO L334 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2025-03-09 06:33:23,132 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-09 06:33:23,133 INFO L124 PetriNetUnfolderBase]: 1/5 cut-off events. [2025-03-09 06:33:23,133 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-09 06:33:23,134 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:33:23,134 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-03-09 06:33:23,135 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2025-03-09 06:33:23,139 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:33:23,140 INFO L85 PathProgramCache]: Analyzing trace with hash 329749, now seen corresponding path program 1 times [2025-03-09 06:33:23,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:33:23,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902850277] [2025-03-09 06:33:23,146 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:33:23,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:33:23,200 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-03-09 06:33:23,224 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-03-09 06:33:23,225 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:33:23,225 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:33:23,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:33:23,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:33:23,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902850277] [2025-03-09 06:33:23,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902850277] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:33:23,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:33:23,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 06:33:23,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621869188] [2025-03-09 06:33:23,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:33:23,390 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:33:23,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:33:23,407 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:33:23,408 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:33:23,416 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 39 [2025-03-09 06:33:23,419 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 38 transitions, 79 flow. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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) [2025-03-09 06:33:23,419 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:33:23,419 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 39 [2025-03-09 06:33:23,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:33:23,543 INFO L124 PetriNetUnfolderBase]: 83/260 cut-off events. [2025-03-09 06:33:23,543 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-09 06:33:23,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 436 conditions, 260 events. 83/260 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1137 event pairs, 64 based on Foata normal form. 1/210 useless extension candidates. Maximal degree in co-relation 411. Up to 170 conditions per place. [2025-03-09 06:33:23,547 INFO L140 encePairwiseOnDemand]: 33/39 looper letters, 24 selfloop transitions, 3 changer transitions 0/40 dead transitions. [2025-03-09 06:33:23,547 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 40 transitions, 137 flow [2025-03-09 06:33:23,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:33:23,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:33:23,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 86 transitions. [2025-03-09 06:33:23,558 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5512820512820513 [2025-03-09 06:33:23,559 INFO L175 Difference]: Start difference. First operand has 39 places, 38 transitions, 79 flow. Second operand 4 states and 86 transitions. [2025-03-09 06:33:23,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 40 transitions, 137 flow [2025-03-09 06:33:23,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 40 transitions, 136 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-09 06:33:23,567 INFO L231 Difference]: Finished difference. Result has 43 places, 40 transitions, 102 flow [2025-03-09 06:33:23,568 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=102, PETRI_PLACES=43, PETRI_TRANSITIONS=40} [2025-03-09 06:33:23,572 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 4 predicate places. [2025-03-09 06:33:23,572 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 40 transitions, 102 flow [2025-03-09 06:33:23,572 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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) [2025-03-09 06:33:23,573 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:33:23,573 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2025-03-09 06:33:23,573 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-09 06:33:23,573 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2025-03-09 06:33:23,574 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:33:23,574 INFO L85 PathProgramCache]: Analyzing trace with hash 1233879385, now seen corresponding path program 1 times [2025-03-09 06:33:23,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:33:23,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268890489] [2025-03-09 06:33:23,574 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:33:23,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:33:23,584 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-09 06:33:23,589 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-09 06:33:23,589 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:33:23,589 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:33:23,708 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:33:23,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:33:23,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268890489] [2025-03-09 06:33:23,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268890489] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:33:23,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1646164436] [2025-03-09 06:33:23,708 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:33:23,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:33:23,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:33:23,711 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 06:33:23,713 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-09 06:33:23,747 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-09 06:33:23,766 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-09 06:33:23,766 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:33:23,766 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:33:23,771 INFO L256 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-09 06:33:23,773 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:33:23,804 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:33:23,804 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 06:33:23,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1646164436] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:33:23,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-09 06:33:23,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2025-03-09 06:33:23,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762766960] [2025-03-09 06:33:23,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:33:23,805 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-09 06:33:23,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:33:23,805 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-09 06:33:23,806 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-03-09 06:33:23,815 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 39 [2025-03-09 06:33:23,815 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 40 transitions, 102 flow. Second operand has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 6 states have internal predecessors, (89), 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) [2025-03-09 06:33:23,815 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:33:23,815 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 39 [2025-03-09 06:33:23,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:33:23,920 INFO L124 PetriNetUnfolderBase]: 83/259 cut-off events. [2025-03-09 06:33:23,920 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-03-09 06:33:23,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 445 conditions, 259 events. 83/259 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1133 event pairs, 64 based on Foata normal form. 1/209 useless extension candidates. Maximal degree in co-relation 428. Up to 165 conditions per place. [2025-03-09 06:33:23,922 INFO L140 encePairwiseOnDemand]: 34/39 looper letters, 20 selfloop transitions, 6 changer transitions 0/39 dead transitions. [2025-03-09 06:33:23,922 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 39 transitions, 150 flow [2025-03-09 06:33:23,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-09 06:33:23,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-09 06:33:23,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 111 transitions. [2025-03-09 06:33:23,925 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.47435897435897434 [2025-03-09 06:33:23,925 INFO L175 Difference]: Start difference. First operand has 43 places, 40 transitions, 102 flow. Second operand 6 states and 111 transitions. [2025-03-09 06:33:23,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 39 transitions, 150 flow [2025-03-09 06:33:23,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 39 transitions, 148 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-09 06:33:23,926 INFO L231 Difference]: Finished difference. Result has 46 places, 39 transitions, 108 flow [2025-03-09 06:33:23,926 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=108, PETRI_PLACES=46, PETRI_TRANSITIONS=39} [2025-03-09 06:33:23,927 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 7 predicate places. [2025-03-09 06:33:23,927 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 39 transitions, 108 flow [2025-03-09 06:33:23,927 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 6 states have internal predecessors, (89), 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) [2025-03-09 06:33:23,927 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:33:23,927 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2025-03-09 06:33:23,934 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-09 06:33:24,132 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:33:24,132 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2025-03-09 06:33:24,133 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:33:24,134 INFO L85 PathProgramCache]: Analyzing trace with hash -404444468, now seen corresponding path program 1 times [2025-03-09 06:33:24,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:33:24,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978765827] [2025-03-09 06:33:24,134 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:33:24,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:33:24,142 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-09 06:33:24,148 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-09 06:33:24,153 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:33:24,154 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:33:24,182 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-09 06:33:24,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:33:24,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978765827] [2025-03-09 06:33:24,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978765827] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:33:24,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:33:24,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 06:33:24,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43791886] [2025-03-09 06:33:24,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:33:24,183 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 06:33:24,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:33:24,184 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 06:33:24,184 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 06:33:24,187 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 39 [2025-03-09 06:33:24,187 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 39 transitions, 108 flow. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:33:24,187 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:33:24,187 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 39 [2025-03-09 06:33:24,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:33:24,253 INFO L124 PetriNetUnfolderBase]: 83/258 cut-off events. [2025-03-09 06:33:24,253 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2025-03-09 06:33:24,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 447 conditions, 258 events. 83/258 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1128 event pairs, 64 based on Foata normal form. 1/209 useless extension candidates. Maximal degree in co-relation 424. Up to 168 conditions per place. [2025-03-09 06:33:24,255 INFO L140 encePairwiseOnDemand]: 36/39 looper letters, 21 selfloop transitions, 4 changer transitions 0/38 dead transitions. [2025-03-09 06:33:24,255 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 38 transitions, 154 flow [2025-03-09 06:33:24,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 06:33:24,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-09 06:33:24,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 66 transitions. [2025-03-09 06:33:24,256 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5641025641025641 [2025-03-09 06:33:24,256 INFO L175 Difference]: Start difference. First operand has 46 places, 39 transitions, 108 flow. Second operand 3 states and 66 transitions. [2025-03-09 06:33:24,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 38 transitions, 154 flow [2025-03-09 06:33:24,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 38 transitions, 132 flow, removed 3 selfloop flow, removed 6 redundant places. [2025-03-09 06:33:24,257 INFO L231 Difference]: Finished difference. Result has 41 places, 38 transitions, 90 flow [2025-03-09 06:33:24,257 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=90, PETRI_PLACES=41, PETRI_TRANSITIONS=38} [2025-03-09 06:33:24,257 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 2 predicate places. [2025-03-09 06:33:24,257 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 38 transitions, 90 flow [2025-03-09 06:33:24,257 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:33:24,257 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:33:24,257 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:33:24,257 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-09 06:33:24,257 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2025-03-09 06:33:24,258 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:33:24,258 INFO L85 PathProgramCache]: Analyzing trace with hash 404320462, now seen corresponding path program 1 times [2025-03-09 06:33:24,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:33:24,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769105766] [2025-03-09 06:33:24,258 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:33:24,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:33:24,265 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-09 06:33:24,270 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-09 06:33:24,273 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:33:24,273 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:33:24,330 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:33:24,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:33:24,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769105766] [2025-03-09 06:33:24,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769105766] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:33:24,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [806644872] [2025-03-09 06:33:24,331 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:33:24,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:33:24,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:33:24,333 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 06:33:24,334 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-09 06:33:24,368 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-09 06:33:24,388 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-09 06:33:24,388 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:33:24,388 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:33:24,389 INFO L256 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-09 06:33:24,390 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:33:24,404 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:33:24,404 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:33:24,426 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:33:24,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [806644872] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:33:24,427 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:33:24,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2025-03-09 06:33:24,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575099081] [2025-03-09 06:33:24,427 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:33:24,427 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-09 06:33:24,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:33:24,429 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-09 06:33:24,429 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2025-03-09 06:33:24,440 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 39 [2025-03-09 06:33:24,440 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 38 transitions, 90 flow. Second operand has 10 states, 10 states have (on average 15.6) internal successors, (156), 10 states have internal predecessors, (156), 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) [2025-03-09 06:33:24,441 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:33:24,441 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 39 [2025-03-09 06:33:24,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:33:24,531 INFO L124 PetriNetUnfolderBase]: 83/262 cut-off events. [2025-03-09 06:33:24,531 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2025-03-09 06:33:24,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 450 conditions, 262 events. 83/262 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1119 event pairs, 64 based on Foata normal form. 2/215 useless extension candidates. Maximal degree in co-relation 417. Up to 166 conditions per place. [2025-03-09 06:33:24,532 INFO L140 encePairwiseOnDemand]: 35/39 looper letters, 21 selfloop transitions, 7 changer transitions 0/41 dead transitions. [2025-03-09 06:33:24,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 41 transitions, 161 flow [2025-03-09 06:33:24,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-09 06:33:24,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-09 06:33:24,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 128 transitions. [2025-03-09 06:33:24,534 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.46886446886446886 [2025-03-09 06:33:24,534 INFO L175 Difference]: Start difference. First operand has 41 places, 38 transitions, 90 flow. Second operand 7 states and 128 transitions. [2025-03-09 06:33:24,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 41 transitions, 161 flow [2025-03-09 06:33:24,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 41 transitions, 147 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-09 06:33:24,535 INFO L231 Difference]: Finished difference. Result has 47 places, 41 transitions, 116 flow [2025-03-09 06:33:24,535 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=116, PETRI_PLACES=47, PETRI_TRANSITIONS=41} [2025-03-09 06:33:24,535 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 8 predicate places. [2025-03-09 06:33:24,536 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 41 transitions, 116 flow [2025-03-09 06:33:24,536 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.6) internal successors, (156), 10 states have internal predecessors, (156), 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) [2025-03-09 06:33:24,536 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:33:24,536 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:33:24,542 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-09 06:33:24,736 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2025-03-09 06:33:24,736 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2025-03-09 06:33:24,737 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:33:24,737 INFO L85 PathProgramCache]: Analyzing trace with hash -547866034, now seen corresponding path program 2 times [2025-03-09 06:33:24,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:33:24,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917396610] [2025-03-09 06:33:24,737 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 06:33:24,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:33:24,745 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 17 statements into 2 equivalence classes. [2025-03-09 06:33:24,749 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 8 of 17 statements. [2025-03-09 06:33:24,749 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-09 06:33:24,749 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:33:24,866 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-03-09 06:33:24,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:33:24,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917396610] [2025-03-09 06:33:24,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917396610] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:33:24,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:33:24,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 06:33:24,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823707902] [2025-03-09 06:33:24,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:33:24,867 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-09 06:33:24,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:33:24,867 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-09 06:33:24,868 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-09 06:33:24,876 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 39 [2025-03-09 06:33:24,876 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 41 transitions, 116 flow. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:33:24,876 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:33:24,876 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 39 [2025-03-09 06:33:24,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:33:25,031 INFO L124 PetriNetUnfolderBase]: 152/377 cut-off events. [2025-03-09 06:33:25,031 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2025-03-09 06:33:25,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 702 conditions, 377 events. 152/377 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1658 event pairs, 16 based on Foata normal form. 14/322 useless extension candidates. Maximal degree in co-relation 664. Up to 197 conditions per place. [2025-03-09 06:33:25,034 INFO L140 encePairwiseOnDemand]: 30/39 looper letters, 60 selfloop transitions, 11 changer transitions 0/82 dead transitions. [2025-03-09 06:33:25,035 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 82 transitions, 340 flow [2025-03-09 06:33:25,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-09 06:33:25,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-09 06:33:25,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 167 transitions. [2025-03-09 06:33:25,037 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6117216117216118 [2025-03-09 06:33:25,037 INFO L175 Difference]: Start difference. First operand has 47 places, 41 transitions, 116 flow. Second operand 7 states and 167 transitions. [2025-03-09 06:33:25,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 82 transitions, 340 flow [2025-03-09 06:33:25,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 82 transitions, 336 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-09 06:33:25,039 INFO L231 Difference]: Finished difference. Result has 57 places, 52 transitions, 198 flow [2025-03-09 06:33:25,039 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=198, PETRI_PLACES=57, PETRI_TRANSITIONS=52} [2025-03-09 06:33:25,039 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 18 predicate places. [2025-03-09 06:33:25,039 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 52 transitions, 198 flow [2025-03-09 06:33:25,039 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:33:25,039 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:33:25,040 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:33:25,040 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-09 06:33:25,040 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2025-03-09 06:33:25,040 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:33:25,040 INFO L85 PathProgramCache]: Analyzing trace with hash -530597324, now seen corresponding path program 1 times [2025-03-09 06:33:25,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:33:25,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456577577] [2025-03-09 06:33:25,041 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:33:25,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:33:25,050 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-09 06:33:25,059 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-09 06:33:25,059 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:33:25,059 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:33:25,169 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:33:25,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:33:25,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456577577] [2025-03-09 06:33:25,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456577577] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:33:25,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1188791365] [2025-03-09 06:33:25,169 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:33:25,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:33:25,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:33:25,171 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 06:33:25,173 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-09 06:33:25,219 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-09 06:33:25,240 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-09 06:33:25,240 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:33:25,240 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:33:25,241 INFO L256 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-09 06:33:25,242 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:33:25,270 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:33:25,271 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:33:25,346 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:33:25,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1188791365] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:33:25,347 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:33:25,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2025-03-09 06:33:25,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653861892] [2025-03-09 06:33:25,347 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:33:25,347 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-03-09 06:33:25,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:33:25,348 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-03-09 06:33:25,349 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2025-03-09 06:33:25,366 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 39 [2025-03-09 06:33:25,366 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 52 transitions, 198 flow. Second operand has 18 states, 18 states have (on average 15.333333333333334) internal successors, (276), 18 states have internal predecessors, (276), 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) [2025-03-09 06:33:25,366 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:33:25,366 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 39 [2025-03-09 06:33:25,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:33:25,511 INFO L124 PetriNetUnfolderBase]: 121/376 cut-off events. [2025-03-09 06:33:25,511 INFO L125 PetriNetUnfolderBase]: For 174/183 co-relation queries the response was YES. [2025-03-09 06:33:25,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 847 conditions, 376 events. 121/376 cut-off events. For 174/183 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1781 event pairs, 63 based on Foata normal form. 4/331 useless extension candidates. Maximal degree in co-relation 767. Up to 241 conditions per place. [2025-03-09 06:33:25,513 INFO L140 encePairwiseOnDemand]: 35/39 looper letters, 31 selfloop transitions, 15 changer transitions 0/60 dead transitions. [2025-03-09 06:33:25,513 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 60 transitions, 338 flow [2025-03-09 06:33:25,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-03-09 06:33:25,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2025-03-09 06:33:25,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 250 transitions. [2025-03-09 06:33:25,514 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.42735042735042733 [2025-03-09 06:33:25,514 INFO L175 Difference]: Start difference. First operand has 57 places, 52 transitions, 198 flow. Second operand 15 states and 250 transitions. [2025-03-09 06:33:25,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 60 transitions, 338 flow [2025-03-09 06:33:25,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 60 transitions, 338 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-09 06:33:25,517 INFO L231 Difference]: Finished difference. Result has 75 places, 60 transitions, 295 flow [2025-03-09 06:33:25,518 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=295, PETRI_PLACES=75, PETRI_TRANSITIONS=60} [2025-03-09 06:33:25,518 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 36 predicate places. [2025-03-09 06:33:25,518 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 60 transitions, 295 flow [2025-03-09 06:33:25,518 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 15.333333333333334) internal successors, (276), 18 states have internal predecessors, (276), 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) [2025-03-09 06:33:25,518 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:33:25,519 INFO L206 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:33:25,524 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-09 06:33:25,719 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:33:25,719 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2025-03-09 06:33:25,720 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:33:25,720 INFO L85 PathProgramCache]: Analyzing trace with hash -190976716, now seen corresponding path program 2 times [2025-03-09 06:33:25,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:33:25,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8271972] [2025-03-09 06:33:25,720 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 06:33:25,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:33:25,732 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 29 statements into 2 equivalence classes. [2025-03-09 06:33:25,738 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 8 of 29 statements. [2025-03-09 06:33:25,738 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-09 06:33:25,738 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:33:25,841 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2025-03-09 06:33:25,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:33:25,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8271972] [2025-03-09 06:33:25,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8271972] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:33:25,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:33:25,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 06:33:25,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277057884] [2025-03-09 06:33:25,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:33:25,842 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-09 06:33:25,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:33:25,844 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-09 06:33:25,844 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-09 06:33:25,850 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 39 [2025-03-09 06:33:25,851 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 60 transitions, 295 flow. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:33:25,851 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:33:25,851 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 39 [2025-03-09 06:33:25,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:33:26,017 INFO L124 PetriNetUnfolderBase]: 145/404 cut-off events. [2025-03-09 06:33:26,017 INFO L125 PetriNetUnfolderBase]: For 240/255 co-relation queries the response was YES. [2025-03-09 06:33:26,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 965 conditions, 404 events. 145/404 cut-off events. For 240/255 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1869 event pairs, 34 based on Foata normal form. 28/392 useless extension candidates. Maximal degree in co-relation 860. Up to 236 conditions per place. [2025-03-09 06:33:26,020 INFO L140 encePairwiseOnDemand]: 30/39 looper letters, 64 selfloop transitions, 14 changer transitions 0/90 dead transitions. [2025-03-09 06:33:26,020 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 90 transitions, 571 flow [2025-03-09 06:33:26,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-09 06:33:26,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-09 06:33:26,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 162 transitions. [2025-03-09 06:33:26,021 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5934065934065934 [2025-03-09 06:33:26,021 INFO L175 Difference]: Start difference. First operand has 75 places, 60 transitions, 295 flow. Second operand 7 states and 162 transitions. [2025-03-09 06:33:26,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 90 transitions, 571 flow [2025-03-09 06:33:26,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 90 transitions, 561 flow, removed 1 selfloop flow, removed 4 redundant places. [2025-03-09 06:33:26,024 INFO L231 Difference]: Finished difference. Result has 82 places, 68 transitions, 383 flow [2025-03-09 06:33:26,025 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=285, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=383, PETRI_PLACES=82, PETRI_TRANSITIONS=68} [2025-03-09 06:33:26,025 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 43 predicate places. [2025-03-09 06:33:26,025 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 68 transitions, 383 flow [2025-03-09 06:33:26,025 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:33:26,025 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:33:26,026 INFO L206 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:33:26,026 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-09 06:33:26,026 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2025-03-09 06:33:26,026 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:33:26,026 INFO L85 PathProgramCache]: Analyzing trace with hash 2134326649, now seen corresponding path program 1 times [2025-03-09 06:33:26,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:33:26,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279471436] [2025-03-09 06:33:26,027 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:33:26,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:33:26,033 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 30 statements into 1 equivalence classes. [2025-03-09 06:33:26,041 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 30 of 30 statements. [2025-03-09 06:33:26,042 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:33:26,042 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:33:26,235 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:33:26,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:33:26,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279471436] [2025-03-09 06:33:26,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279471436] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:33:26,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [623750223] [2025-03-09 06:33:26,236 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:33:26,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:33:26,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:33:26,239 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 06:33:26,240 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-09 06:33:26,283 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 30 statements into 1 equivalence classes. [2025-03-09 06:33:26,305 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 30 of 30 statements. [2025-03-09 06:33:26,306 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:33:26,306 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:33:26,307 INFO L256 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-03-09 06:33:26,308 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:33:26,354 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:33:26,354 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:33:26,533 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:33:26,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [623750223] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:33:26,533 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:33:26,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 22 [2025-03-09 06:33:26,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354305394] [2025-03-09 06:33:26,534 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:33:26,534 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-03-09 06:33:26,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:33:26,534 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-03-09 06:33:26,534 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2025-03-09 06:33:26,555 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 39 [2025-03-09 06:33:26,556 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 68 transitions, 383 flow. Second operand has 23 states, 23 states have (on average 15.304347826086957) internal successors, (352), 23 states have internal predecessors, (352), 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) [2025-03-09 06:33:26,556 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:33:26,556 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 39 [2025-03-09 06:33:26,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:33:26,740 INFO L124 PetriNetUnfolderBase]: 125/394 cut-off events. [2025-03-09 06:33:26,740 INFO L125 PetriNetUnfolderBase]: For 389/399 co-relation queries the response was YES. [2025-03-09 06:33:26,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1091 conditions, 394 events. 125/394 cut-off events. For 389/399 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1836 event pairs, 52 based on Foata normal form. 3/362 useless extension candidates. Maximal degree in co-relation 948. Up to 248 conditions per place. [2025-03-09 06:33:26,743 INFO L140 encePairwiseOnDemand]: 35/39 looper letters, 39 selfloop transitions, 21 changer transitions 0/74 dead transitions. [2025-03-09 06:33:26,743 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 74 transitions, 557 flow [2025-03-09 06:33:26,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-03-09 06:33:26,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2025-03-09 06:33:26,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 339 transitions. [2025-03-09 06:33:26,744 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4139194139194139 [2025-03-09 06:33:26,744 INFO L175 Difference]: Start difference. First operand has 82 places, 68 transitions, 383 flow. Second operand 21 states and 339 transitions. [2025-03-09 06:33:26,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 74 transitions, 557 flow [2025-03-09 06:33:26,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 74 transitions, 547 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-09 06:33:26,747 INFO L231 Difference]: Finished difference. Result has 104 places, 74 transitions, 484 flow [2025-03-09 06:33:26,748 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=373, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=484, PETRI_PLACES=104, PETRI_TRANSITIONS=74} [2025-03-09 06:33:26,748 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 65 predicate places. [2025-03-09 06:33:26,748 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 74 transitions, 484 flow [2025-03-09 06:33:26,748 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 15.304347826086957) internal successors, (352), 23 states have internal predecessors, (352), 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) [2025-03-09 06:33:26,748 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:33:26,748 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:33:26,755 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-03-09 06:33:26,949 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:33:26,949 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2025-03-09 06:33:26,950 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:33:26,950 INFO L85 PathProgramCache]: Analyzing trace with hash -456015051, now seen corresponding path program 2 times [2025-03-09 06:33:26,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:33:26,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891441295] [2025-03-09 06:33:26,950 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 06:33:26,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:33:26,957 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 39 statements into 2 equivalence classes. [2025-03-09 06:33:26,960 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 9 of 39 statements. [2025-03-09 06:33:26,960 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-09 06:33:26,960 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:33:27,030 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-03-09 06:33:27,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:33:27,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891441295] [2025-03-09 06:33:27,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891441295] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:33:27,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:33:27,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-09 06:33:27,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964799670] [2025-03-09 06:33:27,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:33:27,031 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-09 06:33:27,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:33:27,031 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-09 06:33:27,031 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-09 06:33:27,040 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 39 [2025-03-09 06:33:27,041 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 74 transitions, 484 flow. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:33:27,041 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:33:27,041 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 39 [2025-03-09 06:33:27,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:33:27,187 INFO L124 PetriNetUnfolderBase]: 143/415 cut-off events. [2025-03-09 06:33:27,187 INFO L125 PetriNetUnfolderBase]: For 474/476 co-relation queries the response was YES. [2025-03-09 06:33:27,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1178 conditions, 415 events. 143/415 cut-off events. For 474/476 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1885 event pairs, 36 based on Foata normal form. 15/390 useless extension candidates. Maximal degree in co-relation 1007. Up to 234 conditions per place. [2025-03-09 06:33:27,191 INFO L140 encePairwiseOnDemand]: 32/39 looper letters, 71 selfloop transitions, 13 changer transitions 0/95 dead transitions. [2025-03-09 06:33:27,191 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 95 transitions, 738 flow [2025-03-09 06:33:27,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-09 06:33:27,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-09 06:33:27,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 159 transitions. [2025-03-09 06:33:27,192 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5824175824175825 [2025-03-09 06:33:27,192 INFO L175 Difference]: Start difference. First operand has 104 places, 74 transitions, 484 flow. Second operand 7 states and 159 transitions. [2025-03-09 06:33:27,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 95 transitions, 738 flow [2025-03-09 06:33:27,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 95 transitions, 685 flow, removed 1 selfloop flow, removed 14 redundant places. [2025-03-09 06:33:27,198 INFO L231 Difference]: Finished difference. Result has 96 places, 73 transitions, 453 flow [2025-03-09 06:33:27,200 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=427, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=453, PETRI_PLACES=96, PETRI_TRANSITIONS=73} [2025-03-09 06:33:27,200 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 57 predicate places. [2025-03-09 06:33:27,200 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 73 transitions, 453 flow [2025-03-09 06:33:27,200 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:33:27,200 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:33:27,200 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:33:27,200 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-09 06:33:27,201 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2025-03-09 06:33:27,201 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:33:27,201 INFO L85 PathProgramCache]: Analyzing trace with hash 641178042, now seen corresponding path program 1 times [2025-03-09 06:33:27,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:33:27,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473376739] [2025-03-09 06:33:27,201 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:33:27,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:33:27,208 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 42 statements into 1 equivalence classes. [2025-03-09 06:33:27,213 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 42 of 42 statements. [2025-03-09 06:33:27,213 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:33:27,213 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:33:27,259 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-03-09 06:33:27,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:33:27,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473376739] [2025-03-09 06:33:27,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473376739] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:33:27,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:33:27,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:33:27,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848710829] [2025-03-09 06:33:27,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:33:27,260 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:33:27,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:33:27,260 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:33:27,261 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:33:27,266 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 39 [2025-03-09 06:33:27,266 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 73 transitions, 453 flow. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 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) [2025-03-09 06:33:27,266 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:33:27,266 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 39 [2025-03-09 06:33:27,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:33:27,374 INFO L124 PetriNetUnfolderBase]: 208/563 cut-off events. [2025-03-09 06:33:27,375 INFO L125 PetriNetUnfolderBase]: For 525/529 co-relation queries the response was YES. [2025-03-09 06:33:27,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1553 conditions, 563 events. 208/563 cut-off events. For 525/529 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2597 event pairs, 49 based on Foata normal form. 12/530 useless extension candidates. Maximal degree in co-relation 1403. Up to 249 conditions per place. [2025-03-09 06:33:27,377 INFO L140 encePairwiseOnDemand]: 33/39 looper letters, 89 selfloop transitions, 4 changer transitions 0/104 dead transitions. [2025-03-09 06:33:27,377 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 104 transitions, 761 flow [2025-03-09 06:33:27,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:33:27,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:33:27,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 109 transitions. [2025-03-09 06:33:27,380 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6987179487179487 [2025-03-09 06:33:27,380 INFO L175 Difference]: Start difference. First operand has 96 places, 73 transitions, 453 flow. Second operand 4 states and 109 transitions. [2025-03-09 06:33:27,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 104 transitions, 761 flow [2025-03-09 06:33:27,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 104 transitions, 729 flow, removed 0 selfloop flow, removed 5 redundant places. [2025-03-09 06:33:27,386 INFO L231 Difference]: Finished difference. Result has 96 places, 75 transitions, 456 flow [2025-03-09 06:33:27,386 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=429, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=456, PETRI_PLACES=96, PETRI_TRANSITIONS=75} [2025-03-09 06:33:27,387 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 57 predicate places. [2025-03-09 06:33:27,387 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 75 transitions, 456 flow [2025-03-09 06:33:27,387 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 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) [2025-03-09 06:33:27,387 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:33:27,387 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:33:27,388 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-09 06:33:27,388 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2025-03-09 06:33:27,388 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:33:27,388 INFO L85 PathProgramCache]: Analyzing trace with hash -162503201, now seen corresponding path program 1 times [2025-03-09 06:33:27,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:33:27,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286485428] [2025-03-09 06:33:27,389 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:33:27,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:33:27,396 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 42 statements into 1 equivalence classes. [2025-03-09 06:33:27,403 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 42 of 42 statements. [2025-03-09 06:33:27,403 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:33:27,403 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:33:27,465 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-03-09 06:33:27,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:33:27,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286485428] [2025-03-09 06:33:27,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286485428] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:33:27,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:33:27,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:33:27,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891360834] [2025-03-09 06:33:27,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:33:27,466 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:33:27,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:33:27,466 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:33:27,468 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:33:27,471 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 39 [2025-03-09 06:33:27,471 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 75 transitions, 456 flow. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 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) [2025-03-09 06:33:27,472 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:33:27,472 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 39 [2025-03-09 06:33:27,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:33:27,595 INFO L124 PetriNetUnfolderBase]: 318/864 cut-off events. [2025-03-09 06:33:27,595 INFO L125 PetriNetUnfolderBase]: For 812/851 co-relation queries the response was YES. [2025-03-09 06:33:27,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2348 conditions, 864 events. 318/864 cut-off events. For 812/851 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 4407 event pairs, 139 based on Foata normal form. 19/849 useless extension candidates. Maximal degree in co-relation 2197. Up to 401 conditions per place. [2025-03-09 06:33:27,600 INFO L140 encePairwiseOnDemand]: 33/39 looper letters, 95 selfloop transitions, 4 changer transitions 0/110 dead transitions. [2025-03-09 06:33:27,600 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 110 transitions, 813 flow [2025-03-09 06:33:27,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:33:27,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:33:27,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 109 transitions. [2025-03-09 06:33:27,601 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6987179487179487 [2025-03-09 06:33:27,601 INFO L175 Difference]: Start difference. First operand has 96 places, 75 transitions, 456 flow. Second operand 4 states and 109 transitions. [2025-03-09 06:33:27,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 110 transitions, 813 flow [2025-03-09 06:33:27,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 110 transitions, 805 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-09 06:33:27,605 INFO L231 Difference]: Finished difference. Result has 100 places, 77 transitions, 480 flow [2025-03-09 06:33:27,605 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=453, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=480, PETRI_PLACES=100, PETRI_TRANSITIONS=77} [2025-03-09 06:33:27,605 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 61 predicate places. [2025-03-09 06:33:27,606 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 77 transitions, 480 flow [2025-03-09 06:33:27,606 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 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) [2025-03-09 06:33:27,606 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:33:27,606 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:33:27,606 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-09 06:33:27,606 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2025-03-09 06:33:27,606 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:33:27,606 INFO L85 PathProgramCache]: Analyzing trace with hash 856454757, now seen corresponding path program 1 times [2025-03-09 06:33:27,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:33:27,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261221207] [2025-03-09 06:33:27,607 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:33:27,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:33:27,618 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 44 statements into 1 equivalence classes. [2025-03-09 06:33:27,632 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 44 of 44 statements. [2025-03-09 06:33:27,632 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:33:27,632 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:33:28,070 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-03-09 06:33:28,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:33:28,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261221207] [2025-03-09 06:33:28,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261221207] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:33:28,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:33:28,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-09 06:33:28,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457852731] [2025-03-09 06:33:28,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:33:28,071 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-09 06:33:28,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:33:28,071 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-09 06:33:28,071 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2025-03-09 06:33:28,071 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 39 [2025-03-09 06:33:28,071 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 77 transitions, 480 flow. Second operand has 8 states, 8 states have (on average 17.75) internal successors, (142), 8 states have internal predecessors, (142), 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) [2025-03-09 06:33:28,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:33:28,072 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 39 [2025-03-09 06:33:28,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:33:28,313 INFO L124 PetriNetUnfolderBase]: 318/914 cut-off events. [2025-03-09 06:33:28,313 INFO L125 PetriNetUnfolderBase]: For 976/1010 co-relation queries the response was YES. [2025-03-09 06:33:28,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2626 conditions, 914 events. 318/914 cut-off events. For 976/1010 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 5015 event pairs, 84 based on Foata normal form. 7/920 useless extension candidates. Maximal degree in co-relation 2473. Up to 331 conditions per place. [2025-03-09 06:33:28,319 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 113 selfloop transitions, 16 changer transitions 0/142 dead transitions. [2025-03-09 06:33:28,319 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 142 transitions, 1058 flow [2025-03-09 06:33:28,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-09 06:33:28,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-03-09 06:33:28,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 196 transitions. [2025-03-09 06:33:28,320 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6282051282051282 [2025-03-09 06:33:28,320 INFO L175 Difference]: Start difference. First operand has 100 places, 77 transitions, 480 flow. Second operand 8 states and 196 transitions. [2025-03-09 06:33:28,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 142 transitions, 1058 flow [2025-03-09 06:33:28,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 142 transitions, 1046 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-09 06:33:28,325 INFO L231 Difference]: Finished difference. Result has 111 places, 88 transitions, 596 flow [2025-03-09 06:33:28,325 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=477, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=596, PETRI_PLACES=111, PETRI_TRANSITIONS=88} [2025-03-09 06:33:28,325 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 72 predicate places. [2025-03-09 06:33:28,325 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 88 transitions, 596 flow [2025-03-09 06:33:28,326 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.75) internal successors, (142), 8 states have internal predecessors, (142), 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) [2025-03-09 06:33:28,326 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:33:28,326 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:33:28,326 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-09 06:33:28,326 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2025-03-09 06:33:28,326 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:33:28,327 INFO L85 PathProgramCache]: Analyzing trace with hash 845129387, now seen corresponding path program 2 times [2025-03-09 06:33:28,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:33:28,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595785964] [2025-03-09 06:33:28,327 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 06:33:28,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:33:28,335 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 44 statements into 2 equivalence classes. [2025-03-09 06:33:28,338 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 14 of 44 statements. [2025-03-09 06:33:28,339 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-09 06:33:28,339 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:33:28,544 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-03-09 06:33:28,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:33:28,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595785964] [2025-03-09 06:33:28,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595785964] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:33:28,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:33:28,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-09 06:33:28,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343388997] [2025-03-09 06:33:28,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:33:28,547 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-09 06:33:28,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:33:28,547 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-09 06:33:28,547 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2025-03-09 06:33:28,547 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 39 [2025-03-09 06:33:28,548 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 88 transitions, 596 flow. Second operand has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 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) [2025-03-09 06:33:28,548 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:33:28,548 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 39 [2025-03-09 06:33:28,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:33:28,901 INFO L124 PetriNetUnfolderBase]: 383/1090 cut-off events. [2025-03-09 06:33:28,901 INFO L125 PetriNetUnfolderBase]: For 1699/1762 co-relation queries the response was YES. [2025-03-09 06:33:28,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3542 conditions, 1090 events. 383/1090 cut-off events. For 1699/1762 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 6389 event pairs, 53 based on Foata normal form. 7/1097 useless extension candidates. Maximal degree in co-relation 3383. Up to 332 conditions per place. [2025-03-09 06:33:28,907 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 137 selfloop transitions, 48 changer transitions 0/198 dead transitions. [2025-03-09 06:33:28,907 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 198 transitions, 1605 flow [2025-03-09 06:33:28,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-09 06:33:28,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-03-09 06:33:28,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 288 transitions. [2025-03-09 06:33:28,909 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6153846153846154 [2025-03-09 06:33:28,909 INFO L175 Difference]: Start difference. First operand has 111 places, 88 transitions, 596 flow. Second operand 12 states and 288 transitions. [2025-03-09 06:33:28,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 198 transitions, 1605 flow [2025-03-09 06:33:28,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 198 transitions, 1592 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-09 06:33:28,917 INFO L231 Difference]: Finished difference. Result has 126 places, 123 transitions, 967 flow [2025-03-09 06:33:28,917 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=592, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=967, PETRI_PLACES=126, PETRI_TRANSITIONS=123} [2025-03-09 06:33:28,917 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 87 predicate places. [2025-03-09 06:33:28,917 INFO L471 AbstractCegarLoop]: Abstraction has has 126 places, 123 transitions, 967 flow [2025-03-09 06:33:28,918 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 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) [2025-03-09 06:33:28,918 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:33:28,918 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:33:28,918 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-09 06:33:28,918 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2025-03-09 06:33:28,919 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:33:28,919 INFO L85 PathProgramCache]: Analyzing trace with hash -511220181, now seen corresponding path program 3 times [2025-03-09 06:33:28,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:33:28,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339100865] [2025-03-09 06:33:28,919 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-09 06:33:28,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:33:28,928 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 44 statements into 11 equivalence classes. [2025-03-09 06:33:28,931 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 14 of 44 statements. [2025-03-09 06:33:28,932 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-03-09 06:33:28,932 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:33:29,122 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-03-09 06:33:29,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:33:29,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339100865] [2025-03-09 06:33:29,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339100865] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:33:29,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:33:29,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-09 06:33:29,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922109630] [2025-03-09 06:33:29,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:33:29,123 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-09 06:33:29,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:33:29,123 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-09 06:33:29,123 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2025-03-09 06:33:29,124 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 39 [2025-03-09 06:33:29,124 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 123 transitions, 967 flow. Second operand has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 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) [2025-03-09 06:33:29,124 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:33:29,124 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 39 [2025-03-09 06:33:29,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:33:29,488 INFO L124 PetriNetUnfolderBase]: 403/1155 cut-off events. [2025-03-09 06:33:29,488 INFO L125 PetriNetUnfolderBase]: For 2875/2937 co-relation queries the response was YES. [2025-03-09 06:33:29,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4304 conditions, 1155 events. 403/1155 cut-off events. For 2875/2937 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 6934 event pairs, 56 based on Foata normal form. 18/1172 useless extension candidates. Maximal degree in co-relation 4138. Up to 330 conditions per place. [2025-03-09 06:33:29,497 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 152 selfloop transitions, 57 changer transitions 0/222 dead transitions. [2025-03-09 06:33:29,497 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 222 transitions, 2092 flow [2025-03-09 06:33:29,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-09 06:33:29,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-03-09 06:33:29,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 271 transitions. [2025-03-09 06:33:29,498 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6317016317016317 [2025-03-09 06:33:29,498 INFO L175 Difference]: Start difference. First operand has 126 places, 123 transitions, 967 flow. Second operand 11 states and 271 transitions. [2025-03-09 06:33:29,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 222 transitions, 2092 flow [2025-03-09 06:33:29,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 222 transitions, 2015 flow, removed 30 selfloop flow, removed 2 redundant places. [2025-03-09 06:33:29,511 INFO L231 Difference]: Finished difference. Result has 139 places, 142 transitions, 1307 flow [2025-03-09 06:33:29,511 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=939, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1307, PETRI_PLACES=139, PETRI_TRANSITIONS=142} [2025-03-09 06:33:29,511 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 100 predicate places. [2025-03-09 06:33:29,512 INFO L471 AbstractCegarLoop]: Abstraction has has 139 places, 142 transitions, 1307 flow [2025-03-09 06:33:29,512 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 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) [2025-03-09 06:33:29,512 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:33:29,512 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:33:29,512 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-03-09 06:33:29,512 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2025-03-09 06:33:29,513 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:33:29,513 INFO L85 PathProgramCache]: Analyzing trace with hash -705858951, now seen corresponding path program 1 times [2025-03-09 06:33:29,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:33:29,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386534775] [2025-03-09 06:33:29,513 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:33:29,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:33:29,520 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 44 statements into 1 equivalence classes. [2025-03-09 06:33:29,527 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 44 of 44 statements. [2025-03-09 06:33:29,528 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:33:29,528 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:33:29,810 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-03-09 06:33:29,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:33:29,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386534775] [2025-03-09 06:33:29,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386534775] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:33:29,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:33:29,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-09 06:33:29,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017205568] [2025-03-09 06:33:29,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:33:29,811 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-09 06:33:29,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:33:29,811 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-09 06:33:29,811 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2025-03-09 06:33:29,811 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 39 [2025-03-09 06:33:29,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 142 transitions, 1307 flow. Second operand has 8 states, 8 states have (on average 17.75) internal successors, (142), 8 states have internal predecessors, (142), 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) [2025-03-09 06:33:29,812 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:33:29,812 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 39 [2025-03-09 06:33:29,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:33:30,122 INFO L124 PetriNetUnfolderBase]: 452/1290 cut-off events. [2025-03-09 06:33:30,123 INFO L125 PetriNetUnfolderBase]: For 4498/4565 co-relation queries the response was YES. [2025-03-09 06:33:30,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5206 conditions, 1290 events. 452/1290 cut-off events. For 4498/4565 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 7871 event pairs, 134 based on Foata normal form. 9/1299 useless extension candidates. Maximal degree in co-relation 5034. Up to 441 conditions per place. [2025-03-09 06:33:30,132 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 167 selfloop transitions, 42 changer transitions 0/222 dead transitions. [2025-03-09 06:33:30,133 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 222 transitions, 2361 flow [2025-03-09 06:33:30,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-09 06:33:30,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-03-09 06:33:30,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 202 transitions. [2025-03-09 06:33:30,133 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6474358974358975 [2025-03-09 06:33:30,134 INFO L175 Difference]: Start difference. First operand has 139 places, 142 transitions, 1307 flow. Second operand 8 states and 202 transitions. [2025-03-09 06:33:30,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 222 transitions, 2361 flow [2025-03-09 06:33:30,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 222 transitions, 2266 flow, removed 10 selfloop flow, removed 3 redundant places. [2025-03-09 06:33:30,149 INFO L231 Difference]: Finished difference. Result has 147 places, 156 transitions, 1542 flow [2025-03-09 06:33:30,150 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1249, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1542, PETRI_PLACES=147, PETRI_TRANSITIONS=156} [2025-03-09 06:33:30,150 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 108 predicate places. [2025-03-09 06:33:30,151 INFO L471 AbstractCegarLoop]: Abstraction has has 147 places, 156 transitions, 1542 flow [2025-03-09 06:33:30,151 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.75) internal successors, (142), 8 states have internal predecessors, (142), 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) [2025-03-09 06:33:30,151 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:33:30,151 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:33:30,151 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-03-09 06:33:30,151 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2025-03-09 06:33:30,152 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:33:30,152 INFO L85 PathProgramCache]: Analyzing trace with hash -1054327311, now seen corresponding path program 4 times [2025-03-09 06:33:30,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:33:30,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124548857] [2025-03-09 06:33:30,152 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-09 06:33:30,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:33:30,161 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 44 statements into 2 equivalence classes. [2025-03-09 06:33:30,173 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 44 of 44 statements. [2025-03-09 06:33:30,174 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-09 06:33:30,174 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:33:30,350 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2025-03-09 06:33:30,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:33:30,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124548857] [2025-03-09 06:33:30,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124548857] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:33:30,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:33:30,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-09 06:33:30,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354275486] [2025-03-09 06:33:30,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:33:30,351 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-09 06:33:30,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:33:30,351 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-09 06:33:30,351 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-03-09 06:33:30,352 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 39 [2025-03-09 06:33:30,352 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 156 transitions, 1542 flow. Second operand has 8 states, 8 states have (on average 17.75) internal successors, (142), 8 states have internal predecessors, (142), 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) [2025-03-09 06:33:30,352 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:33:30,352 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 39 [2025-03-09 06:33:30,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:33:30,764 INFO L124 PetriNetUnfolderBase]: 529/1489 cut-off events. [2025-03-09 06:33:30,765 INFO L125 PetriNetUnfolderBase]: For 6294/6366 co-relation queries the response was YES. [2025-03-09 06:33:30,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6399 conditions, 1489 events. 529/1489 cut-off events. For 6294/6366 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 9555 event pairs, 73 based on Foata normal form. 22/1510 useless extension candidates. Maximal degree in co-relation 6223. Up to 351 conditions per place. [2025-03-09 06:33:30,777 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 201 selfloop transitions, 72 changer transitions 0/286 dead transitions. [2025-03-09 06:33:30,777 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 286 transitions, 3132 flow [2025-03-09 06:33:30,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-03-09 06:33:30,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2025-03-09 06:33:30,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 292 transitions. [2025-03-09 06:33:30,778 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6806526806526807 [2025-03-09 06:33:30,778 INFO L175 Difference]: Start difference. First operand has 147 places, 156 transitions, 1542 flow. Second operand 11 states and 292 transitions. [2025-03-09 06:33:30,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 286 transitions, 3132 flow [2025-03-09 06:33:30,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 286 transitions, 3025 flow, removed 17 selfloop flow, removed 4 redundant places. [2025-03-09 06:33:30,799 INFO L231 Difference]: Finished difference. Result has 159 places, 184 transitions, 2068 flow [2025-03-09 06:33:30,799 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1475, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2068, PETRI_PLACES=159, PETRI_TRANSITIONS=184} [2025-03-09 06:33:30,799 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 120 predicate places. [2025-03-09 06:33:30,799 INFO L471 AbstractCegarLoop]: Abstraction has has 159 places, 184 transitions, 2068 flow [2025-03-09 06:33:30,799 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.75) internal successors, (142), 8 states have internal predecessors, (142), 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) [2025-03-09 06:33:30,799 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:33:30,800 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:33:30,800 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-03-09 06:33:30,800 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2025-03-09 06:33:30,800 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:33:30,800 INFO L85 PathProgramCache]: Analyzing trace with hash -1877277001, now seen corresponding path program 2 times [2025-03-09 06:33:30,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:33:30,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327199220] [2025-03-09 06:33:30,801 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 06:33:30,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:33:30,809 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 44 statements into 2 equivalence classes. [2025-03-09 06:33:30,811 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 13 of 44 statements. [2025-03-09 06:33:30,812 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-09 06:33:30,812 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:33:30,888 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2025-03-09 06:33:30,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:33:30,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327199220] [2025-03-09 06:33:30,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327199220] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:33:30,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:33:30,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-09 06:33:30,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106347152] [2025-03-09 06:33:30,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:33:30,889 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-09 06:33:30,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:33:30,889 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-09 06:33:30,889 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-09 06:33:30,889 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 39 [2025-03-09 06:33:30,890 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 184 transitions, 2068 flow. Second operand has 7 states, 7 states have (on average 18.0) internal successors, (126), 7 states have internal predecessors, (126), 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) [2025-03-09 06:33:30,890 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:33:30,890 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 39 [2025-03-09 06:33:30,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:33:31,240 INFO L124 PetriNetUnfolderBase]: 561/1585 cut-off events. [2025-03-09 06:33:31,240 INFO L125 PetriNetUnfolderBase]: For 9032/9119 co-relation queries the response was YES. [2025-03-09 06:33:31,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7293 conditions, 1585 events. 561/1585 cut-off events. For 9032/9119 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 10330 event pairs, 157 based on Foata normal form. 20/1603 useless extension candidates. Maximal degree in co-relation 7113. Up to 453 conditions per place. [2025-03-09 06:33:31,255 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 213 selfloop transitions, 50 changer transitions 0/276 dead transitions. [2025-03-09 06:33:31,255 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 276 transitions, 3404 flow [2025-03-09 06:33:31,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-09 06:33:31,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-09 06:33:31,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 192 transitions. [2025-03-09 06:33:31,256 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7032967032967034 [2025-03-09 06:33:31,256 INFO L175 Difference]: Start difference. First operand has 159 places, 184 transitions, 2068 flow. Second operand 7 states and 192 transitions. [2025-03-09 06:33:31,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 276 transitions, 3404 flow [2025-03-09 06:33:31,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 276 transitions, 3329 flow, removed 20 selfloop flow, removed 2 redundant places. [2025-03-09 06:33:31,282 INFO L231 Difference]: Finished difference. Result has 168 places, 207 transitions, 2539 flow [2025-03-09 06:33:31,283 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=1996, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2539, PETRI_PLACES=168, PETRI_TRANSITIONS=207} [2025-03-09 06:33:31,284 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 129 predicate places. [2025-03-09 06:33:31,284 INFO L471 AbstractCegarLoop]: Abstraction has has 168 places, 207 transitions, 2539 flow [2025-03-09 06:33:31,284 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.0) internal successors, (126), 7 states have internal predecessors, (126), 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) [2025-03-09 06:33:31,284 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:33:31,284 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:33:31,284 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-03-09 06:33:31,284 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2025-03-09 06:33:31,285 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:33:31,285 INFO L85 PathProgramCache]: Analyzing trace with hash 486789415, now seen corresponding path program 5 times [2025-03-09 06:33:31,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:33:31,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194654950] [2025-03-09 06:33:31,285 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-09 06:33:31,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:33:31,296 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 44 statements into 11 equivalence classes. [2025-03-09 06:33:31,316 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) and asserted 44 of 44 statements. [2025-03-09 06:33:31,317 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2025-03-09 06:33:31,318 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:33:31,736 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 11 proven. 10 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2025-03-09 06:33:31,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:33:31,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194654950] [2025-03-09 06:33:31,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194654950] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:33:31,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1171927563] [2025-03-09 06:33:31,738 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-09 06:33:31,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:33:31,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:33:31,739 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 06:33:31,741 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-09 06:33:31,788 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 44 statements into 11 equivalence classes. [2025-03-09 06:33:31,839 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) and asserted 44 of 44 statements. [2025-03-09 06:33:31,839 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2025-03-09 06:33:31,839 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:33:31,843 INFO L256 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 32 conjuncts are in the unsatisfiable core [2025-03-09 06:33:31,845 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:33:32,123 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2025-03-09 06:33:32,145 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2025-03-09 06:33:32,156 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-03-09 06:33:32,156 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 06:33:32,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1171927563] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:33:32,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-09 06:33:32,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 17 [2025-03-09 06:33:32,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618006511] [2025-03-09 06:33:32,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:33:32,156 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-09 06:33:32,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:33:32,157 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-09 06:33:32,157 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2025-03-09 06:33:32,173 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 39 [2025-03-09 06:33:32,173 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 207 transitions, 2539 flow. Second operand has 10 states, 10 states have (on average 14.5) internal successors, (145), 10 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:33:32,173 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:33:32,173 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 39 [2025-03-09 06:33:32,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:33:32,876 INFO L124 PetriNetUnfolderBase]: 990/2414 cut-off events. [2025-03-09 06:33:32,877 INFO L125 PetriNetUnfolderBase]: For 15929/15941 co-relation queries the response was YES. [2025-03-09 06:33:32,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11525 conditions, 2414 events. 990/2414 cut-off events. For 15929/15941 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 16309 event pairs, 278 based on Foata normal form. 33/2447 useless extension candidates. Maximal degree in co-relation 11340. Up to 1343 conditions per place. [2025-03-09 06:33:32,905 INFO L140 encePairwiseOnDemand]: 24/39 looper letters, 305 selfloop transitions, 73 changer transitions 0/388 dead transitions. [2025-03-09 06:33:32,905 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 388 transitions, 5155 flow [2025-03-09 06:33:32,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-03-09 06:33:32,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2025-03-09 06:33:32,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 355 transitions. [2025-03-09 06:33:32,907 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5689102564102564 [2025-03-09 06:33:32,907 INFO L175 Difference]: Start difference. First operand has 168 places, 207 transitions, 2539 flow. Second operand 16 states and 355 transitions. [2025-03-09 06:33:32,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 388 transitions, 5155 flow [2025-03-09 06:33:32,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 388 transitions, 5057 flow, removed 49 selfloop flow, removed 0 redundant places. [2025-03-09 06:33:32,952 INFO L231 Difference]: Finished difference. Result has 196 places, 261 transitions, 3306 flow [2025-03-09 06:33:32,952 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=2473, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=3306, PETRI_PLACES=196, PETRI_TRANSITIONS=261} [2025-03-09 06:33:32,953 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 157 predicate places. [2025-03-09 06:33:32,953 INFO L471 AbstractCegarLoop]: Abstraction has has 196 places, 261 transitions, 3306 flow [2025-03-09 06:33:32,953 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.5) internal successors, (145), 10 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:33:32,953 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:33:32,953 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:33:32,960 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-03-09 06:33:33,154 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2025-03-09 06:33:33,154 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2025-03-09 06:33:33,155 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:33:33,155 INFO L85 PathProgramCache]: Analyzing trace with hash 1804758933, now seen corresponding path program 3 times [2025-03-09 06:33:33,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:33:33,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809890941] [2025-03-09 06:33:33,155 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-09 06:33:33,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:33:33,163 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 44 statements into 11 equivalence classes. [2025-03-09 06:33:33,165 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 13 of 44 statements. [2025-03-09 06:33:33,165 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-03-09 06:33:33,165 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:33:33,231 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2025-03-09 06:33:33,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:33:33,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809890941] [2025-03-09 06:33:33,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809890941] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:33:33,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:33:33,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-09 06:33:33,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504317628] [2025-03-09 06:33:33,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:33:33,233 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-09 06:33:33,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:33:33,233 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-09 06:33:33,233 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-09 06:33:33,234 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 39 [2025-03-09 06:33:33,234 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 261 transitions, 3306 flow. Second operand has 7 states, 7 states have (on average 18.0) internal successors, (126), 7 states have internal predecessors, (126), 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) [2025-03-09 06:33:33,234 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:33:33,234 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 39 [2025-03-09 06:33:33,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:33:33,649 INFO L124 PetriNetUnfolderBase]: 699/1929 cut-off events. [2025-03-09 06:33:33,650 INFO L125 PetriNetUnfolderBase]: For 16052/16234 co-relation queries the response was YES. [2025-03-09 06:33:33,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10102 conditions, 1929 events. 699/1929 cut-off events. For 16052/16234 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 13242 event pairs, 193 based on Foata normal form. 40/1967 useless extension candidates. Maximal degree in co-relation 9902. Up to 680 conditions per place. [2025-03-09 06:33:33,667 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 223 selfloop transitions, 76 changer transitions 0/314 dead transitions. [2025-03-09 06:33:33,667 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 314 transitions, 4373 flow [2025-03-09 06:33:33,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-09 06:33:33,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-09 06:33:33,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 184 transitions. [2025-03-09 06:33:33,668 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.673992673992674 [2025-03-09 06:33:33,668 INFO L175 Difference]: Start difference. First operand has 196 places, 261 transitions, 3306 flow. Second operand 7 states and 184 transitions. [2025-03-09 06:33:33,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 314 transitions, 4373 flow [2025-03-09 06:33:33,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 314 transitions, 4299 flow, removed 28 selfloop flow, removed 1 redundant places. [2025-03-09 06:33:33,719 INFO L231 Difference]: Finished difference. Result has 204 places, 267 transitions, 3539 flow [2025-03-09 06:33:33,719 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3204, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3539, PETRI_PLACES=204, PETRI_TRANSITIONS=267} [2025-03-09 06:33:33,719 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 165 predicate places. [2025-03-09 06:33:33,720 INFO L471 AbstractCegarLoop]: Abstraction has has 204 places, 267 transitions, 3539 flow [2025-03-09 06:33:33,720 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.0) internal successors, (126), 7 states have internal predecessors, (126), 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) [2025-03-09 06:33:33,720 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:33:33,720 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:33:33,720 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2025-03-09 06:33:33,720 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2025-03-09 06:33:33,720 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:33:33,720 INFO L85 PathProgramCache]: Analyzing trace with hash 1014249127, now seen corresponding path program 6 times [2025-03-09 06:33:33,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:33:33,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402248932] [2025-03-09 06:33:33,720 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-09 06:33:33,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:33:33,729 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 44 statements into 11 equivalence classes. [2025-03-09 06:33:33,730 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) and asserted 13 of 44 statements. [2025-03-09 06:33:33,730 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2025-03-09 06:33:33,731 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:33:33,798 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2025-03-09 06:33:33,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:33:33,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402248932] [2025-03-09 06:33:33,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402248932] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:33:33,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:33:33,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-09 06:33:33,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171631577] [2025-03-09 06:33:33,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:33:33,799 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-09 06:33:33,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:33:33,799 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-09 06:33:33,799 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-03-09 06:33:33,799 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 39 [2025-03-09 06:33:33,800 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 267 transitions, 3539 flow. Second operand has 8 states, 8 states have (on average 17.75) internal successors, (142), 8 states have internal predecessors, (142), 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) [2025-03-09 06:33:33,800 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:33:33,800 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 39 [2025-03-09 06:33:33,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:33:34,378 INFO L124 PetriNetUnfolderBase]: 699/1912 cut-off events. [2025-03-09 06:33:34,378 INFO L125 PetriNetUnfolderBase]: For 17606/17820 co-relation queries the response was YES. [2025-03-09 06:33:34,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10205 conditions, 1912 events. 699/1912 cut-off events. For 17606/17820 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 13131 event pairs, 104 based on Foata normal form. 55/1964 useless extension candidates. Maximal degree in co-relation 10002. Up to 496 conditions per place. [2025-03-09 06:33:34,394 INFO L140 encePairwiseOnDemand]: 28/39 looper letters, 264 selfloop transitions, 96 changer transitions 0/375 dead transitions. [2025-03-09 06:33:34,395 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 375 transitions, 5172 flow [2025-03-09 06:33:34,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-09 06:33:34,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-03-09 06:33:34,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 307 transitions. [2025-03-09 06:33:34,396 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.655982905982906 [2025-03-09 06:33:34,396 INFO L175 Difference]: Start difference. First operand has 204 places, 267 transitions, 3539 flow. Second operand 12 states and 307 transitions. [2025-03-09 06:33:34,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 375 transitions, 5172 flow [2025-03-09 06:33:34,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 375 transitions, 5027 flow, removed 9 selfloop flow, removed 3 redundant places. [2025-03-09 06:33:34,447 INFO L231 Difference]: Finished difference. Result has 216 places, 279 transitions, 3887 flow [2025-03-09 06:33:34,447 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3410, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3887, PETRI_PLACES=216, PETRI_TRANSITIONS=279} [2025-03-09 06:33:34,448 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 177 predicate places. [2025-03-09 06:33:34,448 INFO L471 AbstractCegarLoop]: Abstraction has has 216 places, 279 transitions, 3887 flow [2025-03-09 06:33:34,448 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.75) internal successors, (142), 8 states have internal predecessors, (142), 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) [2025-03-09 06:33:34,448 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:33:34,448 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:33:34,448 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2025-03-09 06:33:34,448 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2025-03-09 06:33:34,448 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:33:34,448 INFO L85 PathProgramCache]: Analyzing trace with hash 554579059, now seen corresponding path program 7 times [2025-03-09 06:33:34,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:33:34,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461985588] [2025-03-09 06:33:34,449 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-09 06:33:34,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:33:34,456 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 44 statements into 1 equivalence classes. [2025-03-09 06:33:34,461 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 44 of 44 statements. [2025-03-09 06:33:34,462 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:33:34,462 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:33:34,705 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-03-09 06:33:34,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:33:34,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461985588] [2025-03-09 06:33:34,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461985588] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:33:34,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:33:34,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-09 06:33:34,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924158037] [2025-03-09 06:33:34,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:33:34,706 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-09 06:33:34,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:33:34,707 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-09 06:33:34,707 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-09 06:33:34,707 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 39 [2025-03-09 06:33:34,707 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 279 transitions, 3887 flow. Second operand has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 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) [2025-03-09 06:33:34,708 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:33:34,708 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 39 [2025-03-09 06:33:34,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:33:35,181 INFO L124 PetriNetUnfolderBase]: 684/1878 cut-off events. [2025-03-09 06:33:35,182 INFO L125 PetriNetUnfolderBase]: For 18411/18609 co-relation queries the response was YES. [2025-03-09 06:33:35,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10259 conditions, 1878 events. 684/1878 cut-off events. For 18411/18609 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 12800 event pairs, 78 based on Foata normal form. 63/1939 useless extension candidates. Maximal degree in co-relation 10052. Up to 429 conditions per place. [2025-03-09 06:33:35,197 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 248 selfloop transitions, 112 changer transitions 0/375 dead transitions. [2025-03-09 06:33:35,197 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 375 transitions, 5357 flow [2025-03-09 06:33:35,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-03-09 06:33:35,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2025-03-09 06:33:35,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 319 transitions. [2025-03-09 06:33:35,198 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6291913214990138 [2025-03-09 06:33:35,198 INFO L175 Difference]: Start difference. First operand has 216 places, 279 transitions, 3887 flow. Second operand 13 states and 319 transitions. [2025-03-09 06:33:35,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 375 transitions, 5357 flow [2025-03-09 06:33:35,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 375 transitions, 5208 flow, removed 39 selfloop flow, removed 4 redundant places. [2025-03-09 06:33:35,254 INFO L231 Difference]: Finished difference. Result has 228 places, 288 transitions, 4230 flow [2025-03-09 06:33:35,254 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3716, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4230, PETRI_PLACES=228, PETRI_TRANSITIONS=288} [2025-03-09 06:33:35,254 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 189 predicate places. [2025-03-09 06:33:35,254 INFO L471 AbstractCegarLoop]: Abstraction has has 228 places, 288 transitions, 4230 flow [2025-03-09 06:33:35,254 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 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) [2025-03-09 06:33:35,255 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:33:35,255 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:33:35,255 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2025-03-09 06:33:35,255 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2025-03-09 06:33:35,255 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:33:35,255 INFO L85 PathProgramCache]: Analyzing trace with hash 920729425, now seen corresponding path program 4 times [2025-03-09 06:33:35,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:33:35,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252812187] [2025-03-09 06:33:35,255 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-09 06:33:35,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:33:35,261 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 44 statements into 2 equivalence classes. [2025-03-09 06:33:35,269 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 44 of 44 statements. [2025-03-09 06:33:35,269 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-09 06:33:35,269 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:33:35,398 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2025-03-09 06:33:35,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:33:35,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252812187] [2025-03-09 06:33:35,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252812187] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:33:35,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:33:35,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-09 06:33:35,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976498110] [2025-03-09 06:33:35,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:33:35,399 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-09 06:33:35,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:33:35,399 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-09 06:33:35,399 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-09 06:33:35,400 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 39 [2025-03-09 06:33:35,400 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 288 transitions, 4230 flow. Second operand has 7 states, 7 states have (on average 18.0) internal successors, (126), 7 states have internal predecessors, (126), 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) [2025-03-09 06:33:35,400 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:33:35,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 39 [2025-03-09 06:33:35,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:33:35,811 INFO L124 PetriNetUnfolderBase]: 602/1695 cut-off events. [2025-03-09 06:33:35,811 INFO L125 PetriNetUnfolderBase]: For 17839/18008 co-relation queries the response was YES. [2025-03-09 06:33:35,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9409 conditions, 1695 events. 602/1695 cut-off events. For 17839/18008 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 11232 event pairs, 181 based on Foata normal form. 41/1735 useless extension candidates. Maximal degree in co-relation 9198. Up to 543 conditions per place. [2025-03-09 06:33:35,823 INFO L140 encePairwiseOnDemand]: 27/39 looper letters, 229 selfloop transitions, 69 changer transitions 0/313 dead transitions. [2025-03-09 06:33:35,824 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 313 transitions, 4943 flow [2025-03-09 06:33:35,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-09 06:33:35,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-09 06:33:35,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 189 transitions. [2025-03-09 06:33:35,824 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6923076923076923 [2025-03-09 06:33:35,824 INFO L175 Difference]: Start difference. First operand has 228 places, 288 transitions, 4230 flow. Second operand 7 states and 189 transitions. [2025-03-09 06:33:35,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 313 transitions, 4943 flow [2025-03-09 06:33:35,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 313 transitions, 4761 flow, removed 38 selfloop flow, removed 5 redundant places. [2025-03-09 06:33:35,875 INFO L231 Difference]: Finished difference. Result has 231 places, 282 transitions, 4176 flow [2025-03-09 06:33:35,875 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=3884, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4176, PETRI_PLACES=231, PETRI_TRANSITIONS=282} [2025-03-09 06:33:35,876 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 192 predicate places. [2025-03-09 06:33:35,876 INFO L471 AbstractCegarLoop]: Abstraction has has 231 places, 282 transitions, 4176 flow [2025-03-09 06:33:35,876 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.0) internal successors, (126), 7 states have internal predecessors, (126), 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) [2025-03-09 06:33:35,876 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:33:35,876 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:33:35,876 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2025-03-09 06:33:35,876 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2025-03-09 06:33:35,877 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:33:35,877 INFO L85 PathProgramCache]: Analyzing trace with hash -336160275, now seen corresponding path program 5 times [2025-03-09 06:33:35,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:33:35,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559320633] [2025-03-09 06:33:35,877 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-09 06:33:35,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:33:35,884 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 44 statements into 11 equivalence classes. [2025-03-09 06:33:35,891 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) and asserted 44 of 44 statements. [2025-03-09 06:33:35,891 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2025-03-09 06:33:35,891 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:33:36,222 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 11 proven. 10 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2025-03-09 06:33:36,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:33:36,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559320633] [2025-03-09 06:33:36,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559320633] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:33:36,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2011784431] [2025-03-09 06:33:36,223 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-09 06:33:36,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:33:36,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:33:36,225 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 06:33:36,227 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-09 06:33:36,280 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 44 statements into 11 equivalence classes. [2025-03-09 06:33:36,331 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) and asserted 44 of 44 statements. [2025-03-09 06:33:36,331 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2025-03-09 06:33:36,332 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:33:36,333 INFO L256 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 26 conjuncts are in the unsatisfiable core [2025-03-09 06:33:36,336 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:33:36,433 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 13 treesize of output 9 [2025-03-09 06:33:36,444 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-03-09 06:33:36,444 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 06:33:36,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2011784431] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:33:36,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-09 06:33:36,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 14 [2025-03-09 06:33:36,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648872001] [2025-03-09 06:33:36,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:33:36,445 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-09 06:33:36,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:33:36,445 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-09 06:33:36,446 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2025-03-09 06:33:36,446 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 39 [2025-03-09 06:33:36,446 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 282 transitions, 4176 flow. Second operand has 8 states, 8 states have (on average 17.75) internal successors, (142), 8 states have internal predecessors, (142), 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) [2025-03-09 06:33:36,446 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:33:36,446 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 39 [2025-03-09 06:33:36,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:33:36,922 INFO L124 PetriNetUnfolderBase]: 600/1731 cut-off events. [2025-03-09 06:33:36,922 INFO L125 PetriNetUnfolderBase]: For 16662/16836 co-relation queries the response was YES. [2025-03-09 06:33:36,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9303 conditions, 1731 events. 600/1731 cut-off events. For 16662/16836 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 11726 event pairs, 165 based on Foata normal form. 47/1777 useless extension candidates. Maximal degree in co-relation 9090. Up to 614 conditions per place. [2025-03-09 06:33:36,935 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 270 selfloop transitions, 60 changer transitions 0/345 dead transitions. [2025-03-09 06:33:36,935 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 345 transitions, 5316 flow [2025-03-09 06:33:36,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-09 06:33:36,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-09 06:33:36,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 255 transitions. [2025-03-09 06:33:36,936 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6538461538461539 [2025-03-09 06:33:36,936 INFO L175 Difference]: Start difference. First operand has 231 places, 282 transitions, 4176 flow. Second operand 10 states and 255 transitions. [2025-03-09 06:33:36,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 345 transitions, 5316 flow [2025-03-09 06:33:36,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 345 transitions, 5242 flow, removed 12 selfloop flow, removed 2 redundant places. [2025-03-09 06:33:36,996 INFO L231 Difference]: Finished difference. Result has 243 places, 290 transitions, 4406 flow [2025-03-09 06:33:36,996 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=4031, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4406, PETRI_PLACES=243, PETRI_TRANSITIONS=290} [2025-03-09 06:33:36,997 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 204 predicate places. [2025-03-09 06:33:36,997 INFO L471 AbstractCegarLoop]: Abstraction has has 243 places, 290 transitions, 4406 flow [2025-03-09 06:33:36,997 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.75) internal successors, (142), 8 states have internal predecessors, (142), 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) [2025-03-09 06:33:36,997 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:33:36,997 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:33:37,003 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-03-09 06:33:37,197 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:33:37,198 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2025-03-09 06:33:37,198 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:33:37,199 INFO L85 PathProgramCache]: Analyzing trace with hash 597574653, now seen corresponding path program 8 times [2025-03-09 06:33:37,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:33:37,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580532986] [2025-03-09 06:33:37,199 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 06:33:37,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:33:37,207 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 44 statements into 2 equivalence classes. [2025-03-09 06:33:37,209 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 13 of 44 statements. [2025-03-09 06:33:37,209 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-09 06:33:37,209 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:33:37,290 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2025-03-09 06:33:37,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:33:37,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580532986] [2025-03-09 06:33:37,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580532986] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:33:37,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:33:37,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-09 06:33:37,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569672991] [2025-03-09 06:33:37,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:33:37,291 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-09 06:33:37,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:33:37,291 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-09 06:33:37,291 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-09 06:33:37,291 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 39 [2025-03-09 06:33:37,292 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 290 transitions, 4406 flow. Second operand has 7 states, 7 states have (on average 18.0) internal successors, (126), 7 states have internal predecessors, (126), 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) [2025-03-09 06:33:37,292 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:33:37,292 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 39 [2025-03-09 06:33:37,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:33:37,766 INFO L124 PetriNetUnfolderBase]: 552/1586 cut-off events. [2025-03-09 06:33:37,767 INFO L125 PetriNetUnfolderBase]: For 16182/16369 co-relation queries the response was YES. [2025-03-09 06:33:37,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8735 conditions, 1586 events. 552/1586 cut-off events. For 16182/16369 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 10408 event pairs, 184 based on Foata normal form. 42/1627 useless extension candidates. Maximal degree in co-relation 8516. Up to 617 conditions per place. [2025-03-09 06:33:37,788 INFO L140 encePairwiseOnDemand]: 29/39 looper letters, 225 selfloop transitions, 66 changer transitions 0/306 dead transitions. [2025-03-09 06:33:37,789 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 306 transitions, 5032 flow [2025-03-09 06:33:37,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-09 06:33:37,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-09 06:33:37,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 179 transitions. [2025-03-09 06:33:37,790 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6556776556776557 [2025-03-09 06:33:37,790 INFO L175 Difference]: Start difference. First operand has 243 places, 290 transitions, 4406 flow. Second operand 7 states and 179 transitions. [2025-03-09 06:33:37,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 306 transitions, 5032 flow [2025-03-09 06:33:37,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 306 transitions, 4895 flow, removed 39 selfloop flow, removed 5 redundant places. [2025-03-09 06:33:37,869 INFO L231 Difference]: Finished difference. Result has 241 places, 282 transitions, 4309 flow [2025-03-09 06:33:37,869 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=4177, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4309, PETRI_PLACES=241, PETRI_TRANSITIONS=282} [2025-03-09 06:33:37,870 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 202 predicate places. [2025-03-09 06:33:37,870 INFO L471 AbstractCegarLoop]: Abstraction has has 241 places, 282 transitions, 4309 flow [2025-03-09 06:33:37,871 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.0) internal successors, (126), 7 states have internal predecessors, (126), 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) [2025-03-09 06:33:37,871 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:33:37,872 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:33:37,872 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2025-03-09 06:33:37,872 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2025-03-09 06:33:37,872 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:33:37,872 INFO L85 PathProgramCache]: Analyzing trace with hash 428491537, now seen corresponding path program 1 times [2025-03-09 06:33:37,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:33:37,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714088975] [2025-03-09 06:33:37,873 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:33:37,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:33:37,883 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 45 statements into 1 equivalence classes. [2025-03-09 06:33:37,893 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 45 of 45 statements. [2025-03-09 06:33:37,894 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:33:37,894 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:33:38,201 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-03-09 06:33:38,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:33:38,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714088975] [2025-03-09 06:33:38,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714088975] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:33:38,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:33:38,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-09 06:33:38,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290109388] [2025-03-09 06:33:38,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:33:38,202 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-09 06:33:38,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:33:38,202 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-09 06:33:38,202 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2025-03-09 06:33:38,230 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 39 [2025-03-09 06:33:38,231 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 282 transitions, 4309 flow. Second operand has 11 states, 11 states have (on average 13.454545454545455) internal successors, (148), 11 states have internal predecessors, (148), 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) [2025-03-09 06:33:38,231 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:33:38,231 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 39 [2025-03-09 06:33:38,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:33:38,819 INFO L124 PetriNetUnfolderBase]: 931/2264 cut-off events. [2025-03-09 06:33:38,819 INFO L125 PetriNetUnfolderBase]: For 21320/21345 co-relation queries the response was YES. [2025-03-09 06:33:38,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11936 conditions, 2264 events. 931/2264 cut-off events. For 21320/21345 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 14983 event pairs, 342 based on Foata normal form. 30/2294 useless extension candidates. Maximal degree in co-relation 11720. Up to 1457 conditions per place. [2025-03-09 06:33:38,835 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 332 selfloop transitions, 53 changer transitions 0/394 dead transitions. [2025-03-09 06:33:38,835 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 394 transitions, 6547 flow [2025-03-09 06:33:38,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-03-09 06:33:38,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2025-03-09 06:33:38,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 257 transitions. [2025-03-09 06:33:38,837 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5069033530571992 [2025-03-09 06:33:38,837 INFO L175 Difference]: Start difference. First operand has 241 places, 282 transitions, 4309 flow. Second operand 13 states and 257 transitions. [2025-03-09 06:33:38,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 394 transitions, 6547 flow [2025-03-09 06:33:38,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 394 transitions, 6420 flow, removed 8 selfloop flow, removed 3 redundant places. [2025-03-09 06:33:38,896 INFO L231 Difference]: Finished difference. Result has 258 places, 303 transitions, 4654 flow [2025-03-09 06:33:38,896 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=4209, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4654, PETRI_PLACES=258, PETRI_TRANSITIONS=303} [2025-03-09 06:33:38,897 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 219 predicate places. [2025-03-09 06:33:38,897 INFO L471 AbstractCegarLoop]: Abstraction has has 258 places, 303 transitions, 4654 flow [2025-03-09 06:33:38,898 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.454545454545455) internal successors, (148), 11 states have internal predecessors, (148), 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) [2025-03-09 06:33:38,898 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:33:38,898 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:33:38,898 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2025-03-09 06:33:38,899 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2025-03-09 06:33:38,899 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:33:38,899 INFO L85 PathProgramCache]: Analyzing trace with hash -455002031, now seen corresponding path program 2 times [2025-03-09 06:33:38,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:33:38,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959276686] [2025-03-09 06:33:38,899 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 06:33:38,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:33:38,906 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 45 statements into 2 equivalence classes. [2025-03-09 06:33:38,908 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 14 of 45 statements. [2025-03-09 06:33:38,909 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-09 06:33:38,909 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:33:38,997 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2025-03-09 06:33:38,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:33:38,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959276686] [2025-03-09 06:33:38,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959276686] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:33:38,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:33:38,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-09 06:33:38,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416934462] [2025-03-09 06:33:38,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:33:38,999 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-09 06:33:38,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:33:38,999 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-09 06:33:38,999 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2025-03-09 06:33:39,022 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2025-03-09 06:33:39,023 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 303 transitions, 4654 flow. Second operand has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 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) [2025-03-09 06:33:39,023 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:33:39,023 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2025-03-09 06:33:39,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:33:39,812 INFO L124 PetriNetUnfolderBase]: 1224/2814 cut-off events. [2025-03-09 06:33:39,812 INFO L125 PetriNetUnfolderBase]: For 30042/30087 co-relation queries the response was YES. [2025-03-09 06:33:39,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15768 conditions, 2814 events. 1224/2814 cut-off events. For 30042/30087 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 18849 event pairs, 361 based on Foata normal form. 36/2850 useless extension candidates. Maximal degree in co-relation 15543. Up to 1125 conditions per place. [2025-03-09 06:33:39,836 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 309 selfloop transitions, 163 changer transitions 0/480 dead transitions. [2025-03-09 06:33:39,836 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 480 transitions, 7422 flow [2025-03-09 06:33:39,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-03-09 06:33:39,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2025-03-09 06:33:39,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 345 transitions. [2025-03-09 06:33:39,837 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5203619909502263 [2025-03-09 06:33:39,837 INFO L175 Difference]: Start difference. First operand has 258 places, 303 transitions, 4654 flow. Second operand 17 states and 345 transitions. [2025-03-09 06:33:39,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 480 transitions, 7422 flow [2025-03-09 06:33:39,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 480 transitions, 7339 flow, removed 16 selfloop flow, removed 3 redundant places. [2025-03-09 06:33:39,923 INFO L231 Difference]: Finished difference. Result has 283 places, 378 transitions, 6286 flow [2025-03-09 06:33:39,923 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=4598, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=6286, PETRI_PLACES=283, PETRI_TRANSITIONS=378} [2025-03-09 06:33:39,924 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 244 predicate places. [2025-03-09 06:33:39,924 INFO L471 AbstractCegarLoop]: Abstraction has has 283 places, 378 transitions, 6286 flow [2025-03-09 06:33:39,924 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 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) [2025-03-09 06:33:39,924 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:33:39,924 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:33:39,924 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2025-03-09 06:33:39,925 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2025-03-09 06:33:39,925 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:33:39,925 INFO L85 PathProgramCache]: Analyzing trace with hash -1947777299, now seen corresponding path program 1 times [2025-03-09 06:33:39,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:33:39,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978867075] [2025-03-09 06:33:39,925 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:33:39,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:33:39,931 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 45 statements into 1 equivalence classes. [2025-03-09 06:33:39,937 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 45 of 45 statements. [2025-03-09 06:33:39,938 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:33:39,938 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:33:40,118 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-03-09 06:33:40,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:33:40,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978867075] [2025-03-09 06:33:40,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978867075] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:33:40,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:33:40,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-09 06:33:40,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954524139] [2025-03-09 06:33:40,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:33:40,119 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-09 06:33:40,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:33:40,120 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-09 06:33:40,120 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2025-03-09 06:33:40,136 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2025-03-09 06:33:40,136 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 378 transitions, 6286 flow. Second operand has 11 states, 11 states have (on average 12.545454545454545) internal successors, (138), 11 states have internal predecessors, (138), 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) [2025-03-09 06:33:40,136 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:33:40,136 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2025-03-09 06:33:40,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:33:41,000 INFO L124 PetriNetUnfolderBase]: 1392/3145 cut-off events. [2025-03-09 06:33:41,000 INFO L125 PetriNetUnfolderBase]: For 46272/46330 co-relation queries the response was YES. [2025-03-09 06:33:41,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19828 conditions, 3145 events. 1392/3145 cut-off events. For 46272/46330 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 21452 event pairs, 533 based on Foata normal form. 45/3188 useless extension candidates. Maximal degree in co-relation 19591. Up to 1555 conditions per place. [2025-03-09 06:33:41,026 INFO L140 encePairwiseOnDemand]: 24/39 looper letters, 409 selfloop transitions, 124 changer transitions 0/542 dead transitions. [2025-03-09 06:33:41,026 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 542 transitions, 9424 flow [2025-03-09 06:33:41,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-03-09 06:33:41,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2025-03-09 06:33:41,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 352 transitions. [2025-03-09 06:33:41,027 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5014245014245015 [2025-03-09 06:33:41,027 INFO L175 Difference]: Start difference. First operand has 283 places, 378 transitions, 6286 flow. Second operand 18 states and 352 transitions. [2025-03-09 06:33:41,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 542 transitions, 9424 flow [2025-03-09 06:33:41,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 542 transitions, 9314 flow, removed 43 selfloop flow, removed 1 redundant places. [2025-03-09 06:33:41,166 INFO L231 Difference]: Finished difference. Result has 311 places, 419 transitions, 7368 flow [2025-03-09 06:33:41,167 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=6198, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=7368, PETRI_PLACES=311, PETRI_TRANSITIONS=419} [2025-03-09 06:33:41,167 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 272 predicate places. [2025-03-09 06:33:41,167 INFO L471 AbstractCegarLoop]: Abstraction has has 311 places, 419 transitions, 7368 flow [2025-03-09 06:33:41,167 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.545454545454545) internal successors, (138), 11 states have internal predecessors, (138), 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) [2025-03-09 06:33:41,167 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:33:41,167 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:33:41,167 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2025-03-09 06:33:41,167 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2025-03-09 06:33:41,168 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:33:41,168 INFO L85 PathProgramCache]: Analyzing trace with hash -297509075, now seen corresponding path program 3 times [2025-03-09 06:33:41,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:33:41,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856120832] [2025-03-09 06:33:41,168 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-09 06:33:41,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:33:41,175 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 45 statements into 11 equivalence classes. [2025-03-09 06:33:41,176 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 14 of 45 statements. [2025-03-09 06:33:41,176 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-03-09 06:33:41,177 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:33:41,259 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2025-03-09 06:33:41,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:33:41,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856120832] [2025-03-09 06:33:41,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856120832] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:33:41,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:33:41,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-09 06:33:41,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517784446] [2025-03-09 06:33:41,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:33:41,260 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-09 06:33:41,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:33:41,260 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-09 06:33:41,260 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2025-03-09 06:33:41,275 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2025-03-09 06:33:41,275 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 419 transitions, 7368 flow. Second operand has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 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) [2025-03-09 06:33:41,275 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:33:41,275 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2025-03-09 06:33:41,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:33:42,403 INFO L124 PetriNetUnfolderBase]: 1486/3359 cut-off events. [2025-03-09 06:33:42,404 INFO L125 PetriNetUnfolderBase]: For 65608/65658 co-relation queries the response was YES. [2025-03-09 06:33:42,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23983 conditions, 3359 events. 1486/3359 cut-off events. For 65608/65658 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 23397 event pairs, 505 based on Foata normal form. 43/3402 useless extension candidates. Maximal degree in co-relation 23732. Up to 1394 conditions per place. [2025-03-09 06:33:42,444 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 427 selfloop transitions, 132 changer transitions 0/568 dead transitions. [2025-03-09 06:33:42,444 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 568 transitions, 10529 flow [2025-03-09 06:33:42,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-03-09 06:33:42,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2025-03-09 06:33:42,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 374 transitions. [2025-03-09 06:33:42,447 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5327635327635327 [2025-03-09 06:33:42,447 INFO L175 Difference]: Start difference. First operand has 311 places, 419 transitions, 7368 flow. Second operand 18 states and 374 transitions. [2025-03-09 06:33:42,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 568 transitions, 10529 flow [2025-03-09 06:33:42,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 568 transitions, 10402 flow, removed 35 selfloop flow, removed 2 redundant places. [2025-03-09 06:33:42,670 INFO L231 Difference]: Finished difference. Result has 336 places, 461 transitions, 8497 flow [2025-03-09 06:33:42,670 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=7263, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=419, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=316, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=8497, PETRI_PLACES=336, PETRI_TRANSITIONS=461} [2025-03-09 06:33:42,670 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 297 predicate places. [2025-03-09 06:33:42,671 INFO L471 AbstractCegarLoop]: Abstraction has has 336 places, 461 transitions, 8497 flow [2025-03-09 06:33:42,671 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 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) [2025-03-09 06:33:42,671 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:33:42,671 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:33:42,671 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2025-03-09 06:33:42,671 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2025-03-09 06:33:42,671 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:33:42,671 INFO L85 PathProgramCache]: Analyzing trace with hash 1528348703, now seen corresponding path program 2 times [2025-03-09 06:33:42,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:33:42,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315204266] [2025-03-09 06:33:42,672 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 06:33:42,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:33:42,678 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 45 statements into 2 equivalence classes. [2025-03-09 06:33:42,679 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 14 of 45 statements. [2025-03-09 06:33:42,679 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-09 06:33:42,679 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:33:42,772 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2025-03-09 06:33:42,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:33:42,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315204266] [2025-03-09 06:33:42,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315204266] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:33:42,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:33:42,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-09 06:33:42,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953965149] [2025-03-09 06:33:42,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:33:42,773 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-09 06:33:42,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:33:42,774 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-09 06:33:42,774 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2025-03-09 06:33:42,785 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2025-03-09 06:33:42,786 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 461 transitions, 8497 flow. Second operand has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 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) [2025-03-09 06:33:42,786 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:33:42,786 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2025-03-09 06:33:42,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:33:43,777 INFO L124 PetriNetUnfolderBase]: 1638/3639 cut-off events. [2025-03-09 06:33:43,777 INFO L125 PetriNetUnfolderBase]: For 85624/85673 co-relation queries the response was YES. [2025-03-09 06:33:43,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27629 conditions, 3639 events. 1638/3639 cut-off events. For 85624/85673 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 25463 event pairs, 616 based on Foata normal form. 29/3664 useless extension candidates. Maximal degree in co-relation 27369. Up to 1795 conditions per place. [2025-03-09 06:33:43,891 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 427 selfloop transitions, 186 changer transitions 0/623 dead transitions. [2025-03-09 06:33:43,891 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 623 transitions, 12078 flow [2025-03-09 06:33:43,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-03-09 06:33:43,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2025-03-09 06:33:43,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 315 transitions. [2025-03-09 06:33:43,892 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5384615384615384 [2025-03-09 06:33:43,892 INFO L175 Difference]: Start difference. First operand has 336 places, 461 transitions, 8497 flow. Second operand 15 states and 315 transitions. [2025-03-09 06:33:43,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 623 transitions, 12078 flow [2025-03-09 06:33:44,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 623 transitions, 11805 flow, removed 88 selfloop flow, removed 2 redundant places. [2025-03-09 06:33:44,190 INFO L231 Difference]: Finished difference. Result has 356 places, 499 transitions, 9553 flow [2025-03-09 06:33:44,190 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=8261, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=461, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=152, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=300, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=9553, PETRI_PLACES=356, PETRI_TRANSITIONS=499} [2025-03-09 06:33:44,191 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 317 predicate places. [2025-03-09 06:33:44,191 INFO L471 AbstractCegarLoop]: Abstraction has has 356 places, 499 transitions, 9553 flow [2025-03-09 06:33:44,191 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 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) [2025-03-09 06:33:44,191 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:33:44,191 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:33:44,191 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2025-03-09 06:33:44,191 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2025-03-09 06:33:44,191 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:33:44,192 INFO L85 PathProgramCache]: Analyzing trace with hash -1944804069, now seen corresponding path program 3 times [2025-03-09 06:33:44,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:33:44,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045525980] [2025-03-09 06:33:44,192 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-09 06:33:44,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:33:44,198 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 45 statements into 11 equivalence classes. [2025-03-09 06:33:44,201 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 14 of 45 statements. [2025-03-09 06:33:44,201 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-03-09 06:33:44,201 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:33:44,292 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2025-03-09 06:33:44,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:33:44,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045525980] [2025-03-09 06:33:44,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045525980] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:33:44,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:33:44,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-09 06:33:44,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195299120] [2025-03-09 06:33:44,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:33:44,293 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-09 06:33:44,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:33:44,294 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-09 06:33:44,294 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2025-03-09 06:33:44,306 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2025-03-09 06:33:44,307 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 499 transitions, 9553 flow. Second operand has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 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) [2025-03-09 06:33:44,307 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:33:44,307 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2025-03-09 06:33:44,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:33:45,426 INFO L124 PetriNetUnfolderBase]: 1742/3855 cut-off events. [2025-03-09 06:33:45,426 INFO L125 PetriNetUnfolderBase]: For 103373/103423 co-relation queries the response was YES. [2025-03-09 06:33:45,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30768 conditions, 3855 events. 1742/3855 cut-off events. For 103373/103423 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 27278 event pairs, 649 based on Foata normal form. 30/3882 useless extension candidates. Maximal degree in co-relation 30500. Up to 1795 conditions per place. [2025-03-09 06:33:45,475 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 489 selfloop transitions, 158 changer transitions 0/657 dead transitions. [2025-03-09 06:33:45,475 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 657 transitions, 13305 flow [2025-03-09 06:33:45,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-03-09 06:33:45,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2025-03-09 06:33:45,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 366 transitions. [2025-03-09 06:33:45,476 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5213675213675214 [2025-03-09 06:33:45,476 INFO L175 Difference]: Start difference. First operand has 356 places, 499 transitions, 9553 flow. Second operand 18 states and 366 transitions. [2025-03-09 06:33:45,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 657 transitions, 13305 flow [2025-03-09 06:33:45,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 370 places, 657 transitions, 12942 flow, removed 70 selfloop flow, removed 3 redundant places. [2025-03-09 06:33:45,863 INFO L231 Difference]: Finished difference. Result has 381 places, 540 transitions, 10643 flow [2025-03-09 06:33:45,863 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=9214, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=499, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=364, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=10643, PETRI_PLACES=381, PETRI_TRANSITIONS=540} [2025-03-09 06:33:45,864 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 342 predicate places. [2025-03-09 06:33:45,864 INFO L471 AbstractCegarLoop]: Abstraction has has 381 places, 540 transitions, 10643 flow [2025-03-09 06:33:45,864 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 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) [2025-03-09 06:33:45,864 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:33:45,864 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:33:45,864 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2025-03-09 06:33:45,864 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2025-03-09 06:33:45,865 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:33:45,865 INFO L85 PathProgramCache]: Analyzing trace with hash -1146101489, now seen corresponding path program 4 times [2025-03-09 06:33:45,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:33:45,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56803689] [2025-03-09 06:33:45,865 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-09 06:33:45,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:33:45,872 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 45 statements into 2 equivalence classes. [2025-03-09 06:33:45,876 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 45 of 45 statements. [2025-03-09 06:33:45,876 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-09 06:33:45,876 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:33:46,212 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-03-09 06:33:46,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:33:46,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56803689] [2025-03-09 06:33:46,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56803689] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:33:46,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:33:46,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-09 06:33:46,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298936270] [2025-03-09 06:33:46,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:33:46,213 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-09 06:33:46,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:33:46,214 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-09 06:33:46,214 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2025-03-09 06:33:46,233 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 39 [2025-03-09 06:33:46,234 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 540 transitions, 10643 flow. Second operand has 11 states, 11 states have (on average 13.454545454545455) internal successors, (148), 11 states have internal predecessors, (148), 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) [2025-03-09 06:33:46,234 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:33:46,234 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 39 [2025-03-09 06:33:46,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:33:47,566 INFO L124 PetriNetUnfolderBase]: 1683/3800 cut-off events. [2025-03-09 06:33:47,566 INFO L125 PetriNetUnfolderBase]: For 122343/122381 co-relation queries the response was YES. [2025-03-09 06:33:47,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32499 conditions, 3800 events. 1683/3800 cut-off events. For 122343/122381 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 27821 event pairs, 495 based on Foata normal form. 28/3827 useless extension candidates. Maximal degree in co-relation 32220. Up to 2475 conditions per place. [2025-03-09 06:33:47,609 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 585 selfloop transitions, 138 changer transitions 0/737 dead transitions. [2025-03-09 06:33:47,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 737 transitions, 15742 flow [2025-03-09 06:33:47,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-03-09 06:33:47,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2025-03-09 06:33:47,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 351 transitions. [2025-03-09 06:33:47,610 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5294117647058824 [2025-03-09 06:33:47,610 INFO L175 Difference]: Start difference. First operand has 381 places, 540 transitions, 10643 flow. Second operand 17 states and 351 transitions. [2025-03-09 06:33:47,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 737 transitions, 15742 flow [2025-03-09 06:33:48,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 395 places, 737 transitions, 15391 flow, removed 112 selfloop flow, removed 2 redundant places. [2025-03-09 06:33:48,059 INFO L231 Difference]: Finished difference. Result has 404 places, 593 transitions, 12200 flow [2025-03-09 06:33:48,060 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=10338, PETRI_DIFFERENCE_MINUEND_PLACES=379, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=540, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=421, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=12200, PETRI_PLACES=404, PETRI_TRANSITIONS=593} [2025-03-09 06:33:48,060 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 365 predicate places. [2025-03-09 06:33:48,060 INFO L471 AbstractCegarLoop]: Abstraction has has 404 places, 593 transitions, 12200 flow [2025-03-09 06:33:48,060 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.454545454545455) internal successors, (148), 11 states have internal predecessors, (148), 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) [2025-03-09 06:33:48,060 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:33:48,060 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:33:48,061 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2025-03-09 06:33:48,061 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2025-03-09 06:33:48,061 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:33:48,062 INFO L85 PathProgramCache]: Analyzing trace with hash -816659037, now seen corresponding path program 5 times [2025-03-09 06:33:48,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:33:48,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663031318] [2025-03-09 06:33:48,062 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-09 06:33:48,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:33:48,069 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 45 statements into 11 equivalence classes. [2025-03-09 06:33:48,083 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) and asserted 45 of 45 statements. [2025-03-09 06:33:48,083 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2025-03-09 06:33:48,083 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:33:48,339 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-03-09 06:33:48,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:33:48,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663031318] [2025-03-09 06:33:48,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663031318] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:33:48,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:33:48,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-09 06:33:48,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101805830] [2025-03-09 06:33:48,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:33:48,341 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-09 06:33:48,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:33:48,341 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-09 06:33:48,342 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2025-03-09 06:33:48,373 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 39 [2025-03-09 06:33:48,373 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 593 transitions, 12200 flow. Second operand has 11 states, 11 states have (on average 13.454545454545455) internal successors, (148), 11 states have internal predecessors, (148), 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) [2025-03-09 06:33:48,373 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:33:48,373 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 39 [2025-03-09 06:33:48,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:33:49,690 INFO L124 PetriNetUnfolderBase]: 1814/4067 cut-off events. [2025-03-09 06:33:49,690 INFO L125 PetriNetUnfolderBase]: For 145412/145451 co-relation queries the response was YES. [2025-03-09 06:33:49,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36130 conditions, 4067 events. 1814/4067 cut-off events. For 145412/145451 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 30175 event pairs, 542 based on Foata normal form. 31/4097 useless extension candidates. Maximal degree in co-relation 35841. Up to 2923 conditions per place. [2025-03-09 06:33:49,751 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 626 selfloop transitions, 83 changer transitions 0/723 dead transitions. [2025-03-09 06:33:49,751 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 416 places, 723 transitions, 15865 flow [2025-03-09 06:33:49,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-03-09 06:33:49,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2025-03-09 06:33:49,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 257 transitions. [2025-03-09 06:33:49,752 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5069033530571992 [2025-03-09 06:33:49,752 INFO L175 Difference]: Start difference. First operand has 404 places, 593 transitions, 12200 flow. Second operand 13 states and 257 transitions. [2025-03-09 06:33:49,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 416 places, 723 transitions, 15865 flow [2025-03-09 06:33:50,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 415 places, 723 transitions, 15520 flow, removed 169 selfloop flow, removed 1 redundant places. [2025-03-09 06:33:50,344 INFO L231 Difference]: Finished difference. Result has 423 places, 617 transitions, 12812 flow [2025-03-09 06:33:50,344 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=11860, PETRI_DIFFERENCE_MINUEND_PLACES=403, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=593, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=518, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=12812, PETRI_PLACES=423, PETRI_TRANSITIONS=617} [2025-03-09 06:33:50,344 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 384 predicate places. [2025-03-09 06:33:50,345 INFO L471 AbstractCegarLoop]: Abstraction has has 423 places, 617 transitions, 12812 flow [2025-03-09 06:33:50,345 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.454545454545455) internal successors, (148), 11 states have internal predecessors, (148), 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) [2025-03-09 06:33:50,345 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:33:50,345 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:33:50,345 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2025-03-09 06:33:50,345 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2025-03-09 06:33:50,345 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:33:50,345 INFO L85 PathProgramCache]: Analyzing trace with hash 11365961, now seen corresponding path program 4 times [2025-03-09 06:33:50,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:33:50,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390942832] [2025-03-09 06:33:50,346 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-09 06:33:50,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:33:50,352 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 45 statements into 2 equivalence classes. [2025-03-09 06:33:50,356 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 45 of 45 statements. [2025-03-09 06:33:50,356 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-09 06:33:50,356 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:33:50,564 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-03-09 06:33:50,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:33:50,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390942832] [2025-03-09 06:33:50,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390942832] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:33:50,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:33:50,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-09 06:33:50,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176508946] [2025-03-09 06:33:50,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:33:50,565 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-09 06:33:50,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:33:50,565 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-09 06:33:50,566 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2025-03-09 06:33:50,584 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2025-03-09 06:33:50,584 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 617 transitions, 12812 flow. Second operand has 11 states, 11 states have (on average 12.545454545454545) internal successors, (138), 11 states have internal predecessors, (138), 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) [2025-03-09 06:33:50,584 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:33:50,584 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2025-03-09 06:33:50,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:33:52,176 INFO L124 PetriNetUnfolderBase]: 2096/4591 cut-off events. [2025-03-09 06:33:52,176 INFO L125 PetriNetUnfolderBase]: For 167605/167662 co-relation queries the response was YES. [2025-03-09 06:33:52,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40846 conditions, 4591 events. 2096/4591 cut-off events. For 167605/167662 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 33955 event pairs, 723 based on Foata normal form. 33/4624 useless extension candidates. Maximal degree in co-relation 40548. Up to 1802 conditions per place. [2025-03-09 06:33:52,242 INFO L140 encePairwiseOnDemand]: 24/39 looper letters, 602 selfloop transitions, 155 changer transitions 0/768 dead transitions. [2025-03-09 06:33:52,242 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 441 places, 768 transitions, 17131 flow [2025-03-09 06:33:52,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-03-09 06:33:52,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2025-03-09 06:33:52,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 377 transitions. [2025-03-09 06:33:52,244 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5087719298245614 [2025-03-09 06:33:52,244 INFO L175 Difference]: Start difference. First operand has 423 places, 617 transitions, 12812 flow. Second operand 19 states and 377 transitions. [2025-03-09 06:33:52,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 441 places, 768 transitions, 17131 flow [2025-03-09 06:33:52,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 437 places, 768 transitions, 16848 flow, removed 100 selfloop flow, removed 4 redundant places. [2025-03-09 06:33:52,942 INFO L231 Difference]: Finished difference. Result has 448 places, 652 transitions, 14017 flow [2025-03-09 06:33:52,942 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=12594, PETRI_DIFFERENCE_MINUEND_PLACES=419, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=617, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=484, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=14017, PETRI_PLACES=448, PETRI_TRANSITIONS=652} [2025-03-09 06:33:52,943 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 409 predicate places. [2025-03-09 06:33:52,943 INFO L471 AbstractCegarLoop]: Abstraction has has 448 places, 652 transitions, 14017 flow [2025-03-09 06:33:52,943 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.545454545454545) internal successors, (138), 11 states have internal predecessors, (138), 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) [2025-03-09 06:33:52,943 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:33:52,943 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:33:52,943 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2025-03-09 06:33:52,943 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2025-03-09 06:33:52,944 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:33:52,944 INFO L85 PathProgramCache]: Analyzing trace with hash -1683896761, now seen corresponding path program 5 times [2025-03-09 06:33:52,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:33:52,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528613208] [2025-03-09 06:33:52,944 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-09 06:33:52,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:33:52,950 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 45 statements into 11 equivalence classes. [2025-03-09 06:33:52,957 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) and asserted 45 of 45 statements. [2025-03-09 06:33:52,957 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2025-03-09 06:33:52,957 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:33:53,186 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-03-09 06:33:53,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:33:53,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528613208] [2025-03-09 06:33:53,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528613208] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:33:53,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:33:53,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-09 06:33:53,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339616350] [2025-03-09 06:33:53,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:33:53,187 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-09 06:33:53,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:33:53,188 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-09 06:33:53,188 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2025-03-09 06:33:53,215 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 39 [2025-03-09 06:33:53,215 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 448 places, 652 transitions, 14017 flow. Second operand has 11 states, 11 states have (on average 13.454545454545455) internal successors, (148), 11 states have internal predecessors, (148), 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) [2025-03-09 06:33:53,215 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:33:53,216 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 39 [2025-03-09 06:33:53,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:33:54,830 INFO L124 PetriNetUnfolderBase]: 2056/4593 cut-off events. [2025-03-09 06:33:54,830 INFO L125 PetriNetUnfolderBase]: For 203711/203763 co-relation queries the response was YES. [2025-03-09 06:33:54,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43687 conditions, 4593 events. 2056/4593 cut-off events. For 203711/203763 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 35119 event pairs, 550 based on Foata normal form. 44/4637 useless extension candidates. Maximal degree in co-relation 43377. Up to 3119 conditions per place. [2025-03-09 06:33:54,904 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 665 selfloop transitions, 123 changer transitions 0/803 dead transitions. [2025-03-09 06:33:54,904 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 460 places, 803 transitions, 18353 flow [2025-03-09 06:33:54,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-03-09 06:33:54,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2025-03-09 06:33:54,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 262 transitions. [2025-03-09 06:33:54,905 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5167652859960552 [2025-03-09 06:33:54,905 INFO L175 Difference]: Start difference. First operand has 448 places, 652 transitions, 14017 flow. Second operand 13 states and 262 transitions. [2025-03-09 06:33:54,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 460 places, 803 transitions, 18353 flow [2025-03-09 06:33:55,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 457 places, 803 transitions, 18085 flow, removed 112 selfloop flow, removed 3 redundant places. [2025-03-09 06:33:55,841 INFO L231 Difference]: Finished difference. Result has 465 places, 705 transitions, 15435 flow [2025-03-09 06:33:55,841 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=13752, PETRI_DIFFERENCE_MINUEND_PLACES=445, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=652, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=537, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=15435, PETRI_PLACES=465, PETRI_TRANSITIONS=705} [2025-03-09 06:33:55,841 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 426 predicate places. [2025-03-09 06:33:55,842 INFO L471 AbstractCegarLoop]: Abstraction has has 465 places, 705 transitions, 15435 flow [2025-03-09 06:33:55,842 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.454545454545455) internal successors, (148), 11 states have internal predecessors, (148), 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) [2025-03-09 06:33:55,842 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:33:55,842 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:33:55,842 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2025-03-09 06:33:55,842 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2025-03-09 06:33:55,842 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:33:55,842 INFO L85 PathProgramCache]: Analyzing trace with hash 1973841045, now seen corresponding path program 6 times [2025-03-09 06:33:55,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:33:55,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206642330] [2025-03-09 06:33:55,843 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-09 06:33:55,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:33:55,850 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 45 statements into 11 equivalence classes. [2025-03-09 06:33:55,852 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) and asserted 14 of 45 statements. [2025-03-09 06:33:55,852 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2025-03-09 06:33:55,852 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:33:55,958 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2025-03-09 06:33:55,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:33:55,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206642330] [2025-03-09 06:33:55,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206642330] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:33:55,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:33:55,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-09 06:33:55,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095035096] [2025-03-09 06:33:55,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:33:55,959 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-09 06:33:55,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:33:55,959 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-09 06:33:55,959 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2025-03-09 06:33:55,977 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2025-03-09 06:33:55,977 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 465 places, 705 transitions, 15435 flow. Second operand has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 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) [2025-03-09 06:33:55,977 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:33:55,977 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2025-03-09 06:33:55,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:33:58,002 INFO L124 PetriNetUnfolderBase]: 2409/5231 cut-off events. [2025-03-09 06:33:58,003 INFO L125 PetriNetUnfolderBase]: For 247097/247185 co-relation queries the response was YES. [2025-03-09 06:33:58,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50919 conditions, 5231 events. 2409/5231 cut-off events. For 247097/247185 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 39444 event pairs, 874 based on Foata normal form. 39/5270 useless extension candidates. Maximal degree in co-relation 50601. Up to 2018 conditions per place. [2025-03-09 06:33:58,093 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 551 selfloop transitions, 302 changer transitions 0/864 dead transitions. [2025-03-09 06:33:58,093 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 482 places, 864 transitions, 20328 flow [2025-03-09 06:33:58,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-03-09 06:33:58,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2025-03-09 06:33:58,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 359 transitions. [2025-03-09 06:33:58,094 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5113960113960114 [2025-03-09 06:33:58,094 INFO L175 Difference]: Start difference. First operand has 465 places, 705 transitions, 15435 flow. Second operand 18 states and 359 transitions. [2025-03-09 06:33:58,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 482 places, 864 transitions, 20328 flow [2025-03-09 06:33:59,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 480 places, 864 transitions, 20097 flow, removed 102 selfloop flow, removed 2 redundant places. [2025-03-09 06:33:59,241 INFO L231 Difference]: Finished difference. Result has 492 places, 759 transitions, 17713 flow [2025-03-09 06:33:59,242 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=15226, PETRI_DIFFERENCE_MINUEND_PLACES=463, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=705, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=248, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=438, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=17713, PETRI_PLACES=492, PETRI_TRANSITIONS=759} [2025-03-09 06:33:59,242 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 453 predicate places. [2025-03-09 06:33:59,242 INFO L471 AbstractCegarLoop]: Abstraction has has 492 places, 759 transitions, 17713 flow [2025-03-09 06:33:59,242 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 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) [2025-03-09 06:33:59,243 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:33:59,243 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:33:59,243 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2025-03-09 06:33:59,243 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2025-03-09 06:33:59,243 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:33:59,244 INFO L85 PathProgramCache]: Analyzing trace with hash 1674876043, now seen corresponding path program 7 times [2025-03-09 06:33:59,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:33:59,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942805423] [2025-03-09 06:33:59,244 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-09 06:33:59,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:33:59,254 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 45 statements into 1 equivalence classes. [2025-03-09 06:33:59,258 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 45 of 45 statements. [2025-03-09 06:33:59,259 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:33:59,259 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:33:59,618 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-03-09 06:33:59,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:33:59,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942805423] [2025-03-09 06:33:59,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942805423] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:33:59,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:33:59,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-09 06:33:59,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707969848] [2025-03-09 06:33:59,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:33:59,619 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-09 06:33:59,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:33:59,619 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-09 06:33:59,619 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2025-03-09 06:33:59,633 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2025-03-09 06:33:59,633 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 492 places, 759 transitions, 17713 flow. Second operand has 11 states, 11 states have (on average 12.545454545454545) internal successors, (138), 11 states have internal predecessors, (138), 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) [2025-03-09 06:33:59,634 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:33:59,634 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2025-03-09 06:33:59,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:34:01,728 INFO L124 PetriNetUnfolderBase]: 2501/5434 cut-off events. [2025-03-09 06:34:01,728 INFO L125 PetriNetUnfolderBase]: For 306173/306252 co-relation queries the response was YES. [2025-03-09 06:34:01,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55887 conditions, 5434 events. 2501/5434 cut-off events. For 306173/306252 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 41530 event pairs, 888 based on Foata normal form. 37/5471 useless extension candidates. Maximal degree in co-relation 55558. Up to 2089 conditions per place. [2025-03-09 06:34:01,839 INFO L140 encePairwiseOnDemand]: 24/39 looper letters, 743 selfloop transitions, 151 changer transitions 0/905 dead transitions. [2025-03-09 06:34:01,840 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 509 places, 905 transitions, 22557 flow [2025-03-09 06:34:01,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-03-09 06:34:01,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2025-03-09 06:34:01,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 370 transitions. [2025-03-09 06:34:01,841 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5270655270655271 [2025-03-09 06:34:01,841 INFO L175 Difference]: Start difference. First operand has 492 places, 759 transitions, 17713 flow. Second operand 18 states and 370 transitions. [2025-03-09 06:34:01,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 509 places, 905 transitions, 22557 flow [2025-03-09 06:34:03,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 508 places, 905 transitions, 22221 flow, removed 151 selfloop flow, removed 1 redundant places. [2025-03-09 06:34:03,641 INFO L231 Difference]: Finished difference. Result has 519 places, 788 transitions, 18860 flow [2025-03-09 06:34:03,642 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=17378, PETRI_DIFFERENCE_MINUEND_PLACES=491, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=759, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=625, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=18860, PETRI_PLACES=519, PETRI_TRANSITIONS=788} [2025-03-09 06:34:03,642 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 480 predicate places. [2025-03-09 06:34:03,643 INFO L471 AbstractCegarLoop]: Abstraction has has 519 places, 788 transitions, 18860 flow [2025-03-09 06:34:03,643 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.545454545454545) internal successors, (138), 11 states have internal predecessors, (138), 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) [2025-03-09 06:34:03,643 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:34:03,643 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:34:03,643 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2025-03-09 06:34:03,643 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2025-03-09 06:34:03,644 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:34:03,644 INFO L85 PathProgramCache]: Analyzing trace with hash 1607683601, now seen corresponding path program 8 times [2025-03-09 06:34:03,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:34:03,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128720531] [2025-03-09 06:34:03,645 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 06:34:03,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:34:03,658 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 45 statements into 2 equivalence classes. [2025-03-09 06:34:03,660 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 14 of 45 statements. [2025-03-09 06:34:03,660 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-09 06:34:03,660 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:34:03,753 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2025-03-09 06:34:03,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:34:03,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128720531] [2025-03-09 06:34:03,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128720531] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:34:03,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:34:03,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-09 06:34:03,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093034362] [2025-03-09 06:34:03,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:34:03,753 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-09 06:34:03,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:34:03,754 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-09 06:34:03,754 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2025-03-09 06:34:03,771 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2025-03-09 06:34:03,771 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 519 places, 788 transitions, 18860 flow. Second operand has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 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) [2025-03-09 06:34:03,772 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:34:03,772 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2025-03-09 06:34:03,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:34:06,143 INFO L124 PetriNetUnfolderBase]: 2669/5751 cut-off events. [2025-03-09 06:34:06,143 INFO L125 PetriNetUnfolderBase]: For 380569/380659 co-relation queries the response was YES. [2025-03-09 06:34:06,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62115 conditions, 5751 events. 2669/5751 cut-off events. For 380569/380659 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 44528 event pairs, 794 based on Foata normal form. 39/5788 useless extension candidates. Maximal degree in co-relation 61773. Up to 2319 conditions per place. [2025-03-09 06:34:06,250 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 604 selfloop transitions, 386 changer transitions 0/1001 dead transitions. [2025-03-09 06:34:06,251 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 541 places, 1001 transitions, 25435 flow [2025-03-09 06:34:06,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-03-09 06:34:06,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2025-03-09 06:34:06,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 445 transitions. [2025-03-09 06:34:06,252 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.496098104793757 [2025-03-09 06:34:06,252 INFO L175 Difference]: Start difference. First operand has 519 places, 788 transitions, 18860 flow. Second operand 23 states and 445 transitions. [2025-03-09 06:34:06,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 541 places, 1001 transitions, 25435 flow [2025-03-09 06:34:07,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 537 places, 1001 transitions, 24965 flow, removed 174 selfloop flow, removed 4 redundant places. [2025-03-09 06:34:07,958 INFO L231 Difference]: Finished difference. Result has 554 places, 849 transitions, 21808 flow [2025-03-09 06:34:07,959 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=18411, PETRI_DIFFERENCE_MINUEND_PLACES=515, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=788, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=328, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=434, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=21808, PETRI_PLACES=554, PETRI_TRANSITIONS=849} [2025-03-09 06:34:07,959 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 515 predicate places. [2025-03-09 06:34:07,959 INFO L471 AbstractCegarLoop]: Abstraction has has 554 places, 849 transitions, 21808 flow [2025-03-09 06:34:07,959 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 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) [2025-03-09 06:34:07,959 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:34:07,960 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:34:07,960 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2025-03-09 06:34:07,960 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2025-03-09 06:34:07,960 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:34:07,960 INFO L85 PathProgramCache]: Analyzing trace with hash 1954922583, now seen corresponding path program 9 times [2025-03-09 06:34:07,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:34:07,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037053823] [2025-03-09 06:34:07,960 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-09 06:34:07,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:34:07,966 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 45 statements into 11 equivalence classes. [2025-03-09 06:34:07,968 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 14 of 45 statements. [2025-03-09 06:34:07,968 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-03-09 06:34:07,968 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:34:08,046 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2025-03-09 06:34:08,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:34:08,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037053823] [2025-03-09 06:34:08,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037053823] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:34:08,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:34:08,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-09 06:34:08,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826690099] [2025-03-09 06:34:08,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:34:08,048 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-09 06:34:08,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:34:08,048 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-09 06:34:08,048 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2025-03-09 06:34:08,057 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2025-03-09 06:34:08,058 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 554 places, 849 transitions, 21808 flow. Second operand has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 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) [2025-03-09 06:34:08,058 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:34:08,058 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2025-03-09 06:34:08,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:34:10,419 INFO L124 PetriNetUnfolderBase]: 2771/5983 cut-off events. [2025-03-09 06:34:10,419 INFO L125 PetriNetUnfolderBase]: For 460620/460705 co-relation queries the response was YES. [2025-03-09 06:34:10,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68368 conditions, 5983 events. 2771/5983 cut-off events. For 460620/460705 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 46475 event pairs, 984 based on Foata normal form. 37/6020 useless extension candidates. Maximal degree in co-relation 68013. Up to 2488 conditions per place. [2025-03-09 06:34:10,554 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 789 selfloop transitions, 210 changer transitions 0/1010 dead transitions. [2025-03-09 06:34:10,554 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 570 places, 1010 transitions, 27710 flow [2025-03-09 06:34:10,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-03-09 06:34:10,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2025-03-09 06:34:10,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 347 transitions. [2025-03-09 06:34:10,555 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5233785822021116 [2025-03-09 06:34:10,555 INFO L175 Difference]: Start difference. First operand has 554 places, 849 transitions, 21808 flow. Second operand 17 states and 347 transitions. [2025-03-09 06:34:10,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 570 places, 1010 transitions, 27710 flow [2025-03-09 06:34:13,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 567 places, 1010 transitions, 26959 flow, removed 309 selfloop flow, removed 3 redundant places. [2025-03-09 06:34:13,221 INFO L231 Difference]: Finished difference. Result has 579 places, 895 transitions, 23695 flow [2025-03-09 06:34:13,222 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=21072, PETRI_DIFFERENCE_MINUEND_PLACES=551, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=849, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=167, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=669, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=23695, PETRI_PLACES=579, PETRI_TRANSITIONS=895} [2025-03-09 06:34:13,222 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 540 predicate places. [2025-03-09 06:34:13,222 INFO L471 AbstractCegarLoop]: Abstraction has has 579 places, 895 transitions, 23695 flow [2025-03-09 06:34:13,223 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 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) [2025-03-09 06:34:13,223 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:34:13,223 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:34:13,223 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2025-03-09 06:34:13,223 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2025-03-09 06:34:13,224 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:34:13,224 INFO L85 PathProgramCache]: Analyzing trace with hash 1366001007, now seen corresponding path program 10 times [2025-03-09 06:34:13,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:34:13,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944603482] [2025-03-09 06:34:13,224 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-09 06:34:13,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:34:13,230 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 45 statements into 2 equivalence classes. [2025-03-09 06:34:13,237 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 45 of 45 statements. [2025-03-09 06:34:13,237 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-09 06:34:13,237 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:34:13,401 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-03-09 06:34:13,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:34:13,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944603482] [2025-03-09 06:34:13,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944603482] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:34:13,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:34:13,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-09 06:34:13,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111579627] [2025-03-09 06:34:13,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:34:13,402 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-09 06:34:13,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:34:13,402 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-09 06:34:13,403 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2025-03-09 06:34:13,417 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2025-03-09 06:34:13,418 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 579 places, 895 transitions, 23695 flow. Second operand has 11 states, 11 states have (on average 12.545454545454545) internal successors, (138), 11 states have internal predecessors, (138), 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) [2025-03-09 06:34:13,418 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:34:13,418 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2025-03-09 06:34:13,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:34:16,157 INFO L124 PetriNetUnfolderBase]: 2864/6160 cut-off events. [2025-03-09 06:34:16,158 INFO L125 PetriNetUnfolderBase]: For 528568/528678 co-relation queries the response was YES. [2025-03-09 06:34:16,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72627 conditions, 6160 events. 2864/6160 cut-off events. For 528568/528678 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 48005 event pairs, 1053 based on Foata normal form. 41/6201 useless extension candidates. Maximal degree in co-relation 72261. Up to 2676 conditions per place. [2025-03-09 06:34:16,280 INFO L140 encePairwiseOnDemand]: 24/39 looper letters, 725 selfloop transitions, 277 changer transitions 0/1013 dead transitions. [2025-03-09 06:34:16,280 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 595 places, 1013 transitions, 28468 flow [2025-03-09 06:34:16,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-03-09 06:34:16,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2025-03-09 06:34:16,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 348 transitions. [2025-03-09 06:34:16,281 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5248868778280543 [2025-03-09 06:34:16,281 INFO L175 Difference]: Start difference. First operand has 579 places, 895 transitions, 23695 flow. Second operand 17 states and 348 transitions. [2025-03-09 06:34:16,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 595 places, 1013 transitions, 28468 flow [2025-03-09 06:34:19,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 595 places, 1013 transitions, 27960 flow, removed 254 selfloop flow, removed 0 redundant places. [2025-03-09 06:34:19,209 INFO L231 Difference]: Finished difference. Result has 606 places, 924 transitions, 25201 flow [2025-03-09 06:34:19,210 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=23195, PETRI_DIFFERENCE_MINUEND_PLACES=579, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=895, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=249, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=636, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=25201, PETRI_PLACES=606, PETRI_TRANSITIONS=924} [2025-03-09 06:34:19,210 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 567 predicate places. [2025-03-09 06:34:19,211 INFO L471 AbstractCegarLoop]: Abstraction has has 606 places, 924 transitions, 25201 flow [2025-03-09 06:34:19,211 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.545454545454545) internal successors, (138), 11 states have internal predecessors, (138), 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) [2025-03-09 06:34:19,211 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:34:19,211 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:34:19,211 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2025-03-09 06:34:19,211 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2025-03-09 06:34:19,212 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:34:19,212 INFO L85 PathProgramCache]: Analyzing trace with hash -1702815223, now seen corresponding path program 11 times [2025-03-09 06:34:19,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:34:19,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484412131] [2025-03-09 06:34:19,212 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-09 06:34:19,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:34:19,219 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 45 statements into 11 equivalence classes. [2025-03-09 06:34:19,225 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) and asserted 45 of 45 statements. [2025-03-09 06:34:19,225 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2025-03-09 06:34:19,225 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:34:19,409 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-03-09 06:34:19,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:34:19,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484412131] [2025-03-09 06:34:19,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484412131] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:34:19,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:34:19,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-09 06:34:19,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859029393] [2025-03-09 06:34:19,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:34:19,410 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-09 06:34:19,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:34:19,411 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-09 06:34:19,411 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2025-03-09 06:34:19,430 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2025-03-09 06:34:19,430 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 606 places, 924 transitions, 25201 flow. Second operand has 11 states, 11 states have (on average 12.545454545454545) internal successors, (138), 11 states have internal predecessors, (138), 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) [2025-03-09 06:34:19,430 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:34:19,430 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2025-03-09 06:34:19,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:34:22,811 INFO L124 PetriNetUnfolderBase]: 2956/6337 cut-off events. [2025-03-09 06:34:22,812 INFO L125 PetriNetUnfolderBase]: For 607613/607719 co-relation queries the response was YES. [2025-03-09 06:34:22,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77099 conditions, 6337 events. 2956/6337 cut-off events. For 607613/607719 co-relation queries the response was YES. Maximal size of possible extension queue 279. Compared 49560 event pairs, 1102 based on Foata normal form. 40/6377 useless extension candidates. Maximal degree in co-relation 76720. Up to 2770 conditions per place. [2025-03-09 06:34:22,972 INFO L140 encePairwiseOnDemand]: 24/39 looper letters, 826 selfloop transitions, 215 changer transitions 0/1052 dead transitions. [2025-03-09 06:34:22,972 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 623 places, 1052 transitions, 30368 flow [2025-03-09 06:34:22,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-03-09 06:34:22,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2025-03-09 06:34:22,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 352 transitions. [2025-03-09 06:34:22,976 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5014245014245015 [2025-03-09 06:34:22,977 INFO L175 Difference]: Start difference. First operand has 606 places, 924 transitions, 25201 flow. Second operand 18 states and 352 transitions. [2025-03-09 06:34:22,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 623 places, 1052 transitions, 30368 flow [2025-03-09 06:34:26,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 619 places, 1052 transitions, 29755 flow, removed 197 selfloop flow, removed 4 redundant places. [2025-03-09 06:34:26,779 INFO L231 Difference]: Finished difference. Result has 629 places, 947 transitions, 26432 flow [2025-03-09 06:34:26,779 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=24598, PETRI_DIFFERENCE_MINUEND_PLACES=602, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=924, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=193, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=719, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=26432, PETRI_PLACES=629, PETRI_TRANSITIONS=947} [2025-03-09 06:34:26,780 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 590 predicate places. [2025-03-09 06:34:26,780 INFO L471 AbstractCegarLoop]: Abstraction has has 629 places, 947 transitions, 26432 flow [2025-03-09 06:34:26,780 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.545454545454545) internal successors, (138), 11 states have internal predecessors, (138), 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) [2025-03-09 06:34:26,780 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:34:26,780 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:34:26,780 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2025-03-09 06:34:26,780 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2025-03-09 06:34:26,781 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:34:26,781 INFO L85 PathProgramCache]: Analyzing trace with hash -1979477187, now seen corresponding path program 6 times [2025-03-09 06:34:26,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:34:26,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287611545] [2025-03-09 06:34:26,781 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-09 06:34:26,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:34:26,792 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 45 statements into 11 equivalence classes. [2025-03-09 06:34:26,793 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) and asserted 14 of 45 statements. [2025-03-09 06:34:26,794 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2025-03-09 06:34:26,794 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:34:26,874 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2025-03-09 06:34:26,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:34:26,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287611545] [2025-03-09 06:34:26,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287611545] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:34:26,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:34:26,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-09 06:34:26,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315289219] [2025-03-09 06:34:26,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:34:26,875 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-09 06:34:26,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:34:26,876 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-09 06:34:26,876 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2025-03-09 06:34:26,895 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2025-03-09 06:34:26,895 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 629 places, 947 transitions, 26432 flow. Second operand has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 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) [2025-03-09 06:34:26,895 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:34:26,896 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2025-03-09 06:34:26,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:34:30,133 INFO L124 PetriNetUnfolderBase]: 3307/7080 cut-off events. [2025-03-09 06:34:30,134 INFO L125 PetriNetUnfolderBase]: For 666485/666597 co-relation queries the response was YES. [2025-03-09 06:34:30,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84133 conditions, 7080 events. 3307/7080 cut-off events. For 666485/666597 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 56236 event pairs, 1228 based on Foata normal form. 37/7115 useless extension candidates. Maximal degree in co-relation 83743. Up to 3234 conditions per place. [2025-03-09 06:34:30,294 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 862 selfloop transitions, 297 changer transitions 0/1176 dead transitions. [2025-03-09 06:34:30,294 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 645 places, 1176 transitions, 34608 flow [2025-03-09 06:34:30,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-03-09 06:34:30,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2025-03-09 06:34:30,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 345 transitions. [2025-03-09 06:34:30,295 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5203619909502263 [2025-03-09 06:34:30,295 INFO L175 Difference]: Start difference. First operand has 629 places, 947 transitions, 26432 flow. Second operand 17 states and 345 transitions. [2025-03-09 06:34:30,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 645 places, 1176 transitions, 34608 flow [2025-03-09 06:34:34,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 642 places, 1176 transitions, 34001 flow, removed 258 selfloop flow, removed 3 redundant places. [2025-03-09 06:34:34,765 INFO L231 Difference]: Finished difference. Result has 654 places, 1036 transitions, 29348 flow [2025-03-09 06:34:34,766 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=25926, PETRI_DIFFERENCE_MINUEND_PLACES=626, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=947, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=210, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=706, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=29348, PETRI_PLACES=654, PETRI_TRANSITIONS=1036} [2025-03-09 06:34:34,766 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 615 predicate places. [2025-03-09 06:34:34,766 INFO L471 AbstractCegarLoop]: Abstraction has has 654 places, 1036 transitions, 29348 flow [2025-03-09 06:34:34,767 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 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) [2025-03-09 06:34:34,767 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:34:34,767 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:34:34,767 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2025-03-09 06:34:34,767 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2025-03-09 06:34:34,767 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:34:34,768 INFO L85 PathProgramCache]: Analyzing trace with hash -107686875, now seen corresponding path program 12 times [2025-03-09 06:34:34,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:34:34,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639833819] [2025-03-09 06:34:34,768 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-09 06:34:34,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:34:34,774 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 45 statements into 11 equivalence classes. [2025-03-09 06:34:34,776 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) and asserted 14 of 45 statements. [2025-03-09 06:34:34,776 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2025-03-09 06:34:34,776 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:34:34,848 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2025-03-09 06:34:34,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:34:34,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639833819] [2025-03-09 06:34:34,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639833819] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:34:34,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:34:34,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-09 06:34:34,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022532888] [2025-03-09 06:34:34,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:34:34,849 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-09 06:34:34,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:34:34,849 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-09 06:34:34,849 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2025-03-09 06:34:34,858 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 39 [2025-03-09 06:34:34,858 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 654 places, 1036 transitions, 29348 flow. Second operand has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 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) [2025-03-09 06:34:34,858 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:34:34,858 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 39 [2025-03-09 06:34:34,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:34:38,836 INFO L124 PetriNetUnfolderBase]: 3366/7180 cut-off events. [2025-03-09 06:34:38,836 INFO L125 PetriNetUnfolderBase]: For 803032/803181 co-relation queries the response was YES. [2025-03-09 06:34:39,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93198 conditions, 7180 events. 3366/7180 cut-off events. For 803032/803181 co-relation queries the response was YES. Maximal size of possible extension queue 306. Compared 57683 event pairs, 860 based on Foata normal form. 76/7255 useless extension candidates. Maximal degree in co-relation 92798. Up to 2968 conditions per place. [2025-03-09 06:34:39,065 INFO L140 encePairwiseOnDemand]: 25/39 looper letters, 762 selfloop transitions, 513 changer transitions 0/1287 dead transitions. [2025-03-09 06:34:39,065 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 674 places, 1287 transitions, 38769 flow [2025-03-09 06:34:39,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-03-09 06:34:39,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2025-03-09 06:34:39,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 414 transitions. [2025-03-09 06:34:39,066 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5054945054945055 [2025-03-09 06:34:39,066 INFO L175 Difference]: Start difference. First operand has 654 places, 1036 transitions, 29348 flow. Second operand 21 states and 414 transitions. [2025-03-09 06:34:39,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 674 places, 1287 transitions, 38769 flow [2025-03-09 06:34:44,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 672 places, 1287 transitions, 38178 flow, removed 158 selfloop flow, removed 2 redundant places. [2025-03-09 06:34:44,191 INFO L231 Difference]: Finished difference. Result has 685 places, 1105 transitions, 33419 flow [2025-03-09 06:34:44,191 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=28883, PETRI_DIFFERENCE_MINUEND_PLACES=652, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1036, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=450, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=566, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=33419, PETRI_PLACES=685, PETRI_TRANSITIONS=1105} [2025-03-09 06:34:44,192 INFO L279 CegarLoopForPetriNet]: 39 programPoint places, 646 predicate places. [2025-03-09 06:34:44,192 INFO L471 AbstractCegarLoop]: Abstraction has has 685 places, 1105 transitions, 33419 flow [2025-03-09 06:34:44,192 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.7) internal successors, (127), 10 states have internal predecessors, (127), 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) [2025-03-09 06:34:44,192 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:34:44,192 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:34:44,192 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2025-03-09 06:34:44,192 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2025-03-09 06:34:44,193 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:34:44,193 INFO L85 PathProgramCache]: Analyzing trace with hash -2011690259, now seen corresponding path program 13 times [2025-03-09 06:34:44,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:34:44,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576982021] [2025-03-09 06:34:44,193 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-03-09 06:34:44,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:34:44,199 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 45 statements into 1 equivalence classes. [2025-03-09 06:34:44,203 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 45 of 45 statements. [2025-03-09 06:34:44,203 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:34:44,203 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:34:44,528 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-03-09 06:34:44,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:34:44,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576982021] [2025-03-09 06:34:44,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576982021] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:34:44,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:34:44,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-03-09 06:34:44,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614972841] [2025-03-09 06:34:44,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:34:44,528 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-09 06:34:44,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:34:44,529 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-09 06:34:44,529 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2025-03-09 06:34:44,552 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 39 [2025-03-09 06:34:44,552 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 685 places, 1105 transitions, 33419 flow. Second operand has 11 states, 11 states have (on average 13.454545454545455) internal successors, (148), 11 states have internal predecessors, (148), 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) [2025-03-09 06:34:44,552 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:34:44,552 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 39 [2025-03-09 06:34:44,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:34:48,134 INFO L124 PetriNetUnfolderBase]: 3305/7175 cut-off events. [2025-03-09 06:34:48,134 INFO L125 PetriNetUnfolderBase]: For 914067/914168 co-relation queries the response was YES. [2025-03-09 06:34:48,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96941 conditions, 7175 events. 3305/7175 cut-off events. For 914067/914168 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 59278 event pairs, 773 based on Foata normal form. 44/7218 useless extension candidates. Maximal degree in co-relation 96528. Up to 4974 conditions per place. [2025-03-09 06:34:48,275 INFO L140 encePairwiseOnDemand]: 26/39 looper letters, 1087 selfloop transitions, 156 changer transitions 0/1265 dead transitions. [2025-03-09 06:34:48,275 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 697 places, 1265 transitions, 40128 flow [2025-03-09 06:34:48,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-03-09 06:34:48,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2025-03-09 06:34:48,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 264 transitions. [2025-03-09 06:34:48,276 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5207100591715976 [2025-03-09 06:34:48,276 INFO L175 Difference]: Start difference. First operand has 685 places, 1105 transitions, 33419 flow. Second operand 13 states and 264 transitions. [2025-03-09 06:34:48,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 697 places, 1265 transitions, 40128 flow