./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded/pals_lcr.8.ufo.BOUNDED-16.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8fc3dc66 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/seq-mthreaded/pals_lcr.8.ufo.BOUNDED-16.pals.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-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 ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6327d27f7abe073a313b5cd298156d916d823d684efcd0c205043cb09610f085 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-16 19:11:33,058 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-16 19:11:33,123 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-16 19:11:33,129 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-16 19:11:33,130 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-16 19:11:33,154 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-16 19:11:33,155 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-16 19:11:33,155 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-16 19:11:33,156 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-16 19:11:33,156 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-16 19:11:33,157 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-16 19:11:33,157 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-16 19:11:33,157 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-16 19:11:33,157 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-16 19:11:33,157 INFO L153 SettingsManager]: * Use SBE=true [2025-03-16 19:11:33,157 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-16 19:11:33,157 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-16 19:11:33,157 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-16 19:11:33,157 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-16 19:11:33,157 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-16 19:11:33,157 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-16 19:11:33,157 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-16 19:11:33,157 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-16 19:11:33,157 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-16 19:11:33,157 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-16 19:11:33,158 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-16 19:11:33,158 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-16 19:11:33,158 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-16 19:11:33,158 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-16 19:11:33,158 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-16 19:11:33,158 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-16 19:11:33,158 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-16 19:11:33,158 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 19:11:33,158 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-16 19:11:33,158 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-16 19:11:33,158 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-16 19:11:33,158 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-16 19:11:33,158 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-16 19:11:33,158 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-16 19:11:33,158 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-16 19:11:33,158 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-16 19:11:33,158 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-16 19:11:33,158 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-16 19:11:33,158 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 ! call(reach_error())) ) 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 -> 6327d27f7abe073a313b5cd298156d916d823d684efcd0c205043cb09610f085 [2025-03-16 19:11:33,405 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-16 19:11:33,413 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-16 19:11:33,415 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-16 19:11:33,416 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-16 19:11:33,417 INFO L274 PluginConnector]: CDTParser initialized [2025-03-16 19:11:33,417 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_lcr.8.ufo.BOUNDED-16.pals.c [2025-03-16 19:11:34,568 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a68acab7e/ac76605bb93b49a9b7834369da90fc66/FLAG780674ccb [2025-03-16 19:11:34,867 INFO L384 CDTParser]: Found 1 translation units. [2025-03-16 19:11:34,868 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr.8.ufo.BOUNDED-16.pals.c [2025-03-16 19:11:34,880 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a68acab7e/ac76605bb93b49a9b7834369da90fc66/FLAG780674ccb [2025-03-16 19:11:35,135 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a68acab7e/ac76605bb93b49a9b7834369da90fc66 [2025-03-16 19:11:35,137 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-16 19:11:35,139 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-16 19:11:35,139 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-16 19:11:35,140 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-16 19:11:35,143 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-16 19:11:35,143 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 07:11:35" (1/1) ... [2025-03-16 19:11:35,144 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e42eceb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:11:35, skipping insertion in model container [2025-03-16 19:11:35,144 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.03 07:11:35" (1/1) ... [2025-03-16 19:11:35,170 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-16 19:11:35,328 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr.8.ufo.BOUNDED-16.pals.c[26453,26466] [2025-03-16 19:11:35,332 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 19:11:35,342 INFO L200 MainTranslator]: Completed pre-run [2025-03-16 19:11:35,380 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr.8.ufo.BOUNDED-16.pals.c[26453,26466] [2025-03-16 19:11:35,380 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-16 19:11:35,398 INFO L204 MainTranslator]: Completed translation [2025-03-16 19:11:35,399 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:11:35 WrapperNode [2025-03-16 19:11:35,399 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-16 19:11:35,400 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-16 19:11:35,400 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-16 19:11:35,400 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-16 19:11:35,404 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:11:35" (1/1) ... [2025-03-16 19:11:35,412 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:11:35" (1/1) ... [2025-03-16 19:11:35,438 INFO L138 Inliner]: procedures = 27, calls = 19, calls flagged for inlining = 14, calls inlined = 14, statements flattened = 529 [2025-03-16 19:11:35,438 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-16 19:11:35,438 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-16 19:11:35,438 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-16 19:11:35,438 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-16 19:11:35,446 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:11:35" (1/1) ... [2025-03-16 19:11:35,446 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:11:35" (1/1) ... [2025-03-16 19:11:35,449 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:11:35" (1/1) ... [2025-03-16 19:11:35,473 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-03-16 19:11:35,473 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:11:35" (1/1) ... [2025-03-16 19:11:35,473 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:11:35" (1/1) ... [2025-03-16 19:11:35,480 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:11:35" (1/1) ... [2025-03-16 19:11:35,481 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:11:35" (1/1) ... [2025-03-16 19:11:35,482 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:11:35" (1/1) ... [2025-03-16 19:11:35,483 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:11:35" (1/1) ... [2025-03-16 19:11:35,486 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-16 19:11:35,486 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-16 19:11:35,486 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-16 19:11:35,486 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-16 19:11:35,491 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:11:35" (1/1) ... [2025-03-16 19:11:35,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-16 19:11:35,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-16 19:11:35,524 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) [2025-03-16 19:11:35,530 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 [2025-03-16 19:11:35,544 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-16 19:11:35,545 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-16 19:11:35,545 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-16 19:11:35,545 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-16 19:11:35,666 INFO L256 CfgBuilder]: Building ICFG [2025-03-16 19:11:35,668 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-16 19:11:36,080 INFO L? ?]: Removed 52 outVars from TransFormulas that were not future-live. [2025-03-16 19:11:36,080 INFO L307 CfgBuilder]: Performing block encoding [2025-03-16 19:11:36,091 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-16 19:11:36,091 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-16 19:11:36,092 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 07:11:36 BoogieIcfgContainer [2025-03-16 19:11:36,092 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-16 19:11:36,094 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-16 19:11:36,094 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-16 19:11:36,098 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-16 19:11:36,098 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.03 07:11:35" (1/3) ... [2025-03-16 19:11:36,098 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@930088b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 07:11:36, skipping insertion in model container [2025-03-16 19:11:36,098 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.03 07:11:35" (2/3) ... [2025-03-16 19:11:36,099 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@930088b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 07:11:36, skipping insertion in model container [2025-03-16 19:11:36,099 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.03 07:11:36" (3/3) ... [2025-03-16 19:11:36,100 INFO L128 eAbstractionObserver]: Analyzing ICFG pals_lcr.8.ufo.BOUNDED-16.pals.c [2025-03-16 19:11:36,122 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-16 19:11:36,124 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG pals_lcr.8.ufo.BOUNDED-16.pals.c that has 1 procedures, 126 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-16 19:11:36,170 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-16 19:11:36,182 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;@722090fb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-16 19:11:36,182 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-16 19:11:36,187 INFO L276 IsEmpty]: Start isEmpty. Operand has 126 states, 124 states have (on average 1.8225806451612903) internal successors, (226), 125 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:11:36,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2025-03-16 19:11:36,192 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:11:36,193 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:11:36,193 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:11:36,198 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:11:36,199 INFO L85 PathProgramCache]: Analyzing trace with hash 1789661609, now seen corresponding path program 1 times [2025-03-16 19:11:36,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:11:36,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424449470] [2025-03-16 19:11:36,207 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:11:36,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:11:36,292 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-03-16 19:11:36,337 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-03-16 19:11:36,341 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:11:36,341 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:11:36,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:11:36,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:11:36,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424449470] [2025-03-16 19:11:36,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424449470] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:11:36,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:11:36,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-16 19:11:36,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893535972] [2025-03-16 19:11:36,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:11:36,460 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-16 19:11:36,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:11:36,474 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-16 19:11:36,475 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-16 19:11:36,477 INFO L87 Difference]: Start difference. First operand has 126 states, 124 states have (on average 1.8225806451612903) internal successors, (226), 125 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:11:36,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:11:36,497 INFO L93 Difference]: Finished difference Result 188 states and 326 transitions. [2025-03-16 19:11:36,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-16 19:11:36,498 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2025-03-16 19:11:36,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:11:36,505 INFO L225 Difference]: With dead ends: 188 [2025-03-16 19:11:36,505 INFO L226 Difference]: Without dead ends: 124 [2025-03-16 19:11:36,508 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-16 19:11:36,511 INFO L435 NwaCegarLoop]: 224 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 19:11:36,511 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 19:11:36,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2025-03-16 19:11:36,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2025-03-16 19:11:36,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 123 states have (on average 1.8048780487804879) internal successors, (222), 123 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:11:36,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 222 transitions. [2025-03-16 19:11:36,536 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 222 transitions. Word has length 26 [2025-03-16 19:11:36,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:11:36,536 INFO L471 AbstractCegarLoop]: Abstraction has 124 states and 222 transitions. [2025-03-16 19:11:36,536 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:11:36,536 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 222 transitions. [2025-03-16 19:11:36,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2025-03-16 19:11:36,537 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:11:36,537 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:11:36,537 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-16 19:11:36,537 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:11:36,538 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:11:36,538 INFO L85 PathProgramCache]: Analyzing trace with hash -1260541206, now seen corresponding path program 1 times [2025-03-16 19:11:36,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:11:36,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318872124] [2025-03-16 19:11:36,538 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:11:36,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:11:36,559 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-03-16 19:11:36,581 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-03-16 19:11:36,581 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:11:36,581 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:11:36,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:11:36,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:11:36,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318872124] [2025-03-16 19:11:36,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318872124] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:11:36,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:11:36,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 19:11:36,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247744376] [2025-03-16 19:11:36,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:11:36,819 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 19:11:36,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:11:36,820 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 19:11:36,820 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 19:11:36,821 INFO L87 Difference]: Start difference. First operand 124 states and 222 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:11:36,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:11:36,931 INFO L93 Difference]: Finished difference Result 186 states and 321 transitions. [2025-03-16 19:11:36,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 19:11:36,931 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2025-03-16 19:11:36,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:11:36,932 INFO L225 Difference]: With dead ends: 186 [2025-03-16 19:11:36,932 INFO L226 Difference]: Without dead ends: 124 [2025-03-16 19:11:36,933 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 19:11:36,933 INFO L435 NwaCegarLoop]: 221 mSDtfsCounter, 0 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 598 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 19:11:36,934 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 598 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 19:11:36,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2025-03-16 19:11:36,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2025-03-16 19:11:36,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 123 states have (on average 1.3089430894308942) internal successors, (161), 123 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:11:36,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 161 transitions. [2025-03-16 19:11:36,938 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 161 transitions. Word has length 26 [2025-03-16 19:11:36,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:11:36,938 INFO L471 AbstractCegarLoop]: Abstraction has 124 states and 161 transitions. [2025-03-16 19:11:36,939 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:11:36,939 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 161 transitions. [2025-03-16 19:11:36,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2025-03-16 19:11:36,940 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:11:36,940 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:11:36,940 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-16 19:11:36,940 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:11:36,941 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:11:36,941 INFO L85 PathProgramCache]: Analyzing trace with hash -1706629330, now seen corresponding path program 1 times [2025-03-16 19:11:36,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:11:36,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041968485] [2025-03-16 19:11:36,941 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:11:36,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:11:36,965 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 86 statements into 1 equivalence classes. [2025-03-16 19:11:36,981 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 86 of 86 statements. [2025-03-16 19:11:36,982 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:11:36,982 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:11:37,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:11:37,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:11:37,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041968485] [2025-03-16 19:11:37,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041968485] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:11:37,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:11:37,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-16 19:11:37,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457852731] [2025-03-16 19:11:37,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:11:37,347 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-16 19:11:37,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:11:37,348 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-16 19:11:37,348 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2025-03-16 19:11:37,348 INFO L87 Difference]: Start difference. First operand 124 states and 161 transitions. Second operand has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:11:37,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:11:37,960 INFO L93 Difference]: Finished difference Result 1068 states and 1697 transitions. [2025-03-16 19:11:37,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-03-16 19:11:37,961 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2025-03-16 19:11:37,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:11:37,968 INFO L225 Difference]: With dead ends: 1068 [2025-03-16 19:11:37,970 INFO L226 Difference]: Without dead ends: 1009 [2025-03-16 19:11:37,971 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=162, Invalid=344, Unknown=0, NotChecked=0, Total=506 [2025-03-16 19:11:37,973 INFO L435 NwaCegarLoop]: 157 mSDtfsCounter, 1754 mSDsluCounter, 5432 mSDsCounter, 0 mSdLazyCounter, 410 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1754 SdHoareTripleChecker+Valid, 5589 SdHoareTripleChecker+Invalid, 413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-16 19:11:37,974 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1754 Valid, 5589 Invalid, 413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 410 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-16 19:11:37,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1009 states. [2025-03-16 19:11:37,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1009 to 181. [2025-03-16 19:11:38,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 180 states have (on average 1.4111111111111112) internal successors, (254), 180 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:11:38,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 254 transitions. [2025-03-16 19:11:38,002 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 254 transitions. Word has length 86 [2025-03-16 19:11:38,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:11:38,002 INFO L471 AbstractCegarLoop]: Abstraction has 181 states and 254 transitions. [2025-03-16 19:11:38,003 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.6) internal successors, (86), 10 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:11:38,003 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 254 transitions. [2025-03-16 19:11:38,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2025-03-16 19:11:38,005 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:11:38,005 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:11:38,005 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-16 19:11:38,005 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:11:38,005 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:11:38,006 INFO L85 PathProgramCache]: Analyzing trace with hash 642860435, now seen corresponding path program 1 times [2025-03-16 19:11:38,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:11:38,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054840998] [2025-03-16 19:11:38,006 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:11:38,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:11:38,024 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 88 statements into 1 equivalence classes. [2025-03-16 19:11:38,039 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 88 of 88 statements. [2025-03-16 19:11:38,039 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:11:38,039 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:11:38,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:11:38,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:11:38,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054840998] [2025-03-16 19:11:38,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054840998] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:11:38,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:11:38,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-16 19:11:38,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530880169] [2025-03-16 19:11:38,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:11:38,147 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 19:11:38,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:11:38,148 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 19:11:38,148 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 19:11:38,148 INFO L87 Difference]: Start difference. First operand 181 states and 254 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:11:38,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:11:38,173 INFO L93 Difference]: Finished difference Result 402 states and 613 transitions. [2025-03-16 19:11:38,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 19:11:38,174 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2025-03-16 19:11:38,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:11:38,175 INFO L225 Difference]: With dead ends: 402 [2025-03-16 19:11:38,175 INFO L226 Difference]: Without dead ends: 286 [2025-03-16 19:11:38,176 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 19:11:38,176 INFO L435 NwaCegarLoop]: 159 mSDtfsCounter, 66 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 19:11:38,176 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 250 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 19:11:38,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2025-03-16 19:11:38,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 284. [2025-03-16 19:11:38,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 283 states have (on average 1.4840989399293287) internal successors, (420), 283 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:11:38,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 420 transitions. [2025-03-16 19:11:38,185 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 420 transitions. Word has length 88 [2025-03-16 19:11:38,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:11:38,186 INFO L471 AbstractCegarLoop]: Abstraction has 284 states and 420 transitions. [2025-03-16 19:11:38,186 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:11:38,186 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 420 transitions. [2025-03-16 19:11:38,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2025-03-16 19:11:38,190 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:11:38,190 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:11:38,190 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-16 19:11:38,191 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:11:38,191 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:11:38,191 INFO L85 PathProgramCache]: Analyzing trace with hash 643903120, now seen corresponding path program 1 times [2025-03-16 19:11:38,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:11:38,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406913021] [2025-03-16 19:11:38,191 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:11:38,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:11:38,208 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 88 statements into 1 equivalence classes. [2025-03-16 19:11:38,227 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 88 of 88 statements. [2025-03-16 19:11:38,227 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:11:38,228 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:11:38,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:11:38,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:11:38,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406913021] [2025-03-16 19:11:38,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406913021] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:11:38,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:11:38,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-16 19:11:38,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948256431] [2025-03-16 19:11:38,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:11:38,814 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-16 19:11:38,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:11:38,815 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-16 19:11:38,815 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2025-03-16 19:11:38,816 INFO L87 Difference]: Start difference. First operand 284 states and 420 transitions. Second operand has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:11:39,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:11:39,289 INFO L93 Difference]: Finished difference Result 505 states and 776 transitions. [2025-03-16 19:11:39,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-16 19:11:39,291 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2025-03-16 19:11:39,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:11:39,292 INFO L225 Difference]: With dead ends: 505 [2025-03-16 19:11:39,292 INFO L226 Difference]: Without dead ends: 286 [2025-03-16 19:11:39,293 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2025-03-16 19:11:39,293 INFO L435 NwaCegarLoop]: 151 mSDtfsCounter, 414 mSDsluCounter, 654 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 414 SdHoareTripleChecker+Valid, 805 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-16 19:11:39,293 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [414 Valid, 805 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-16 19:11:39,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2025-03-16 19:11:39,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 284. [2025-03-16 19:11:39,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 283 states have (on average 1.4770318021201414) internal successors, (418), 283 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:11:39,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 418 transitions. [2025-03-16 19:11:39,308 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 418 transitions. Word has length 88 [2025-03-16 19:11:39,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:11:39,308 INFO L471 AbstractCegarLoop]: Abstraction has 284 states and 418 transitions. [2025-03-16 19:11:39,308 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.8) internal successors, (88), 10 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:11:39,312 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 418 transitions. [2025-03-16 19:11:39,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2025-03-16 19:11:39,313 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:11:39,313 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:11:39,313 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-16 19:11:39,314 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:11:39,314 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:11:39,314 INFO L85 PathProgramCache]: Analyzing trace with hash -1512854701, now seen corresponding path program 1 times [2025-03-16 19:11:39,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:11:39,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950126929] [2025-03-16 19:11:39,314 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:11:39,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:11:39,332 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 89 statements into 1 equivalence classes. [2025-03-16 19:11:39,357 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 89 of 89 statements. [2025-03-16 19:11:39,357 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:11:39,357 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:11:39,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:11:39,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:11:39,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950126929] [2025-03-16 19:11:39,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950126929] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:11:39,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:11:39,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-16 19:11:39,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420180700] [2025-03-16 19:11:39,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:11:39,580 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-16 19:11:39,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:11:39,580 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-16 19:11:39,580 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 19:11:39,580 INFO L87 Difference]: Start difference. First operand 284 states and 418 transitions. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 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) [2025-03-16 19:11:39,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:11:39,599 INFO L93 Difference]: Finished difference Result 290 states and 425 transitions. [2025-03-16 19:11:39,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-16 19:11:39,600 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 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) Word has length 89 [2025-03-16 19:11:39,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:11:39,602 INFO L225 Difference]: With dead ends: 290 [2025-03-16 19:11:39,602 INFO L226 Difference]: Without dead ends: 288 [2025-03-16 19:11:39,603 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-16 19:11:39,603 INFO L435 NwaCegarLoop]: 159 mSDtfsCounter, 0 mSDsluCounter, 310 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 469 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 19:11:39,603 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 469 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 19:11:39,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2025-03-16 19:11:39,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 288. [2025-03-16 19:11:39,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 287 states have (on average 1.4668989547038327) internal successors, (421), 287 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:11:39,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 421 transitions. [2025-03-16 19:11:39,610 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 421 transitions. Word has length 89 [2025-03-16 19:11:39,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:11:39,610 INFO L471 AbstractCegarLoop]: Abstraction has 288 states and 421 transitions. [2025-03-16 19:11:39,610 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 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) [2025-03-16 19:11:39,610 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 421 transitions. [2025-03-16 19:11:39,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2025-03-16 19:11:39,611 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:11:39,611 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:11:39,611 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-16 19:11:39,612 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:11:39,612 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:11:39,612 INFO L85 PathProgramCache]: Analyzing trace with hash -286427694, now seen corresponding path program 1 times [2025-03-16 19:11:39,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:11:39,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080670025] [2025-03-16 19:11:39,612 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:11:39,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:11:39,628 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 90 statements into 1 equivalence classes. [2025-03-16 19:11:39,640 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 90 of 90 statements. [2025-03-16 19:11:39,640 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:11:39,640 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:11:39,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:11:39,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:11:39,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080670025] [2025-03-16 19:11:39,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080670025] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:11:39,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:11:39,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-16 19:11:39,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234348608] [2025-03-16 19:11:39,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:11:39,689 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 19:11:39,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:11:39,690 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 19:11:39,690 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 19:11:39,690 INFO L87 Difference]: Start difference. First operand 288 states and 421 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:11:39,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:11:39,707 INFO L93 Difference]: Finished difference Result 522 states and 794 transitions. [2025-03-16 19:11:39,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 19:11:39,708 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2025-03-16 19:11:39,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:11:39,709 INFO L225 Difference]: With dead ends: 522 [2025-03-16 19:11:39,709 INFO L226 Difference]: Without dead ends: 402 [2025-03-16 19:11:39,710 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 19:11:39,710 INFO L435 NwaCegarLoop]: 242 mSDtfsCounter, 86 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 19:11:39,710 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 339 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 19:11:39,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2025-03-16 19:11:39,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 400. [2025-03-16 19:11:39,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 399 states have (on average 1.4987468671679198) internal successors, (598), 399 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:11:39,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 598 transitions. [2025-03-16 19:11:39,723 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 598 transitions. Word has length 90 [2025-03-16 19:11:39,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:11:39,723 INFO L471 AbstractCegarLoop]: Abstraction has 400 states and 598 transitions. [2025-03-16 19:11:39,723 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:11:39,723 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 598 transitions. [2025-03-16 19:11:39,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2025-03-16 19:11:39,724 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:11:39,724 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:11:39,724 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-16 19:11:39,724 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:11:39,724 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:11:39,724 INFO L85 PathProgramCache]: Analyzing trace with hash -169092910, now seen corresponding path program 1 times [2025-03-16 19:11:39,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:11:39,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166635650] [2025-03-16 19:11:39,725 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:11:39,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:11:39,752 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 90 statements into 1 equivalence classes. [2025-03-16 19:11:39,761 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 90 of 90 statements. [2025-03-16 19:11:39,761 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:11:39,761 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:11:39,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:11:39,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:11:39,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166635650] [2025-03-16 19:11:39,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166635650] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:11:39,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:11:39,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-16 19:11:39,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008860197] [2025-03-16 19:11:39,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:11:39,805 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 19:11:39,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:11:39,806 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 19:11:39,806 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 19:11:39,806 INFO L87 Difference]: Start difference. First operand 400 states and 598 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:11:39,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:11:39,825 INFO L93 Difference]: Finished difference Result 1042 states and 1618 transitions. [2025-03-16 19:11:39,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 19:11:39,826 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2025-03-16 19:11:39,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:11:39,828 INFO L225 Difference]: With dead ends: 1042 [2025-03-16 19:11:39,828 INFO L226 Difference]: Without dead ends: 709 [2025-03-16 19:11:39,829 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 19:11:39,829 INFO L435 NwaCegarLoop]: 244 mSDtfsCounter, 84 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 19:11:39,829 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 345 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 19:11:39,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 709 states. [2025-03-16 19:11:39,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 709 to 707. [2025-03-16 19:11:39,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 707 states, 706 states have (on average 1.5297450424929178) internal successors, (1080), 706 states have internal predecessors, (1080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:11:39,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 707 states to 707 states and 1080 transitions. [2025-03-16 19:11:39,845 INFO L78 Accepts]: Start accepts. Automaton has 707 states and 1080 transitions. Word has length 90 [2025-03-16 19:11:39,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:11:39,845 INFO L471 AbstractCegarLoop]: Abstraction has 707 states and 1080 transitions. [2025-03-16 19:11:39,845 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:11:39,845 INFO L276 IsEmpty]: Start isEmpty. Operand 707 states and 1080 transitions. [2025-03-16 19:11:39,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2025-03-16 19:11:39,846 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:11:39,846 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:11:39,846 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-16 19:11:39,846 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:11:39,847 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:11:39,847 INFO L85 PathProgramCache]: Analyzing trace with hash 1596390354, now seen corresponding path program 1 times [2025-03-16 19:11:39,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:11:39,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345094606] [2025-03-16 19:11:39,847 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:11:39,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:11:39,862 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 90 statements into 1 equivalence classes. [2025-03-16 19:11:39,872 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 90 of 90 statements. [2025-03-16 19:11:39,873 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:11:39,873 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:11:39,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:11:39,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:11:39,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345094606] [2025-03-16 19:11:39,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345094606] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:11:39,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:11:39,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-16 19:11:39,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051527621] [2025-03-16 19:11:39,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:11:39,919 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 19:11:39,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:11:39,920 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 19:11:39,921 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 19:11:39,921 INFO L87 Difference]: Start difference. First operand 707 states and 1080 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:11:39,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:11:39,947 INFO L93 Difference]: Finished difference Result 1939 states and 3022 transitions. [2025-03-16 19:11:39,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 19:11:39,948 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2025-03-16 19:11:39,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:11:39,953 INFO L225 Difference]: With dead ends: 1939 [2025-03-16 19:11:39,954 INFO L226 Difference]: Without dead ends: 1299 [2025-03-16 19:11:39,954 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 19:11:39,958 INFO L435 NwaCegarLoop]: 242 mSDtfsCounter, 82 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 347 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 19:11:39,958 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 347 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 19:11:39,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1299 states. [2025-03-16 19:11:39,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1299 to 1297. [2025-03-16 19:11:39,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1297 states, 1296 states have (on average 1.5401234567901234) internal successors, (1996), 1296 states have internal predecessors, (1996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:11:39,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1297 states to 1297 states and 1996 transitions. [2025-03-16 19:11:39,994 INFO L78 Accepts]: Start accepts. Automaton has 1297 states and 1996 transitions. Word has length 90 [2025-03-16 19:11:39,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:11:39,994 INFO L471 AbstractCegarLoop]: Abstraction has 1297 states and 1996 transitions. [2025-03-16 19:11:39,994 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:11:39,994 INFO L276 IsEmpty]: Start isEmpty. Operand 1297 states and 1996 transitions. [2025-03-16 19:11:39,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2025-03-16 19:11:39,995 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:11:39,995 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:11:39,995 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-16 19:11:39,995 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:11:39,996 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:11:39,997 INFO L85 PathProgramCache]: Analyzing trace with hash 315547346, now seen corresponding path program 1 times [2025-03-16 19:11:39,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:11:39,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679930410] [2025-03-16 19:11:39,997 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:11:39,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:11:40,012 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 90 statements into 1 equivalence classes. [2025-03-16 19:11:40,022 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 90 of 90 statements. [2025-03-16 19:11:40,022 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:11:40,022 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:11:40,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:11:40,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:11:40,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679930410] [2025-03-16 19:11:40,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679930410] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:11:40,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:11:40,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-16 19:11:40,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318179781] [2025-03-16 19:11:40,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:11:40,065 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 19:11:40,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:11:40,065 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 19:11:40,065 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 19:11:40,065 INFO L87 Difference]: Start difference. First operand 1297 states and 1996 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:11:40,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:11:40,110 INFO L93 Difference]: Finished difference Result 3661 states and 5686 transitions. [2025-03-16 19:11:40,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 19:11:40,110 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2025-03-16 19:11:40,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:11:40,119 INFO L225 Difference]: With dead ends: 3661 [2025-03-16 19:11:40,119 INFO L226 Difference]: Without dead ends: 2431 [2025-03-16 19:11:40,121 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 19:11:40,123 INFO L435 NwaCegarLoop]: 240 mSDtfsCounter, 80 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 349 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 19:11:40,123 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 349 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 19:11:40,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2431 states. [2025-03-16 19:11:40,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2431 to 2429. [2025-03-16 19:11:40,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2429 states, 2428 states have (on average 1.5370675453047775) internal successors, (3732), 2428 states have internal predecessors, (3732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:11:40,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2429 states to 2429 states and 3732 transitions. [2025-03-16 19:11:40,184 INFO L78 Accepts]: Start accepts. Automaton has 2429 states and 3732 transitions. Word has length 90 [2025-03-16 19:11:40,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:11:40,185 INFO L471 AbstractCegarLoop]: Abstraction has 2429 states and 3732 transitions. [2025-03-16 19:11:40,185 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:11:40,185 INFO L276 IsEmpty]: Start isEmpty. Operand 2429 states and 3732 transitions. [2025-03-16 19:11:40,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2025-03-16 19:11:40,186 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:11:40,187 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:11:40,187 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-16 19:11:40,187 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:11:40,188 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:11:40,188 INFO L85 PathProgramCache]: Analyzing trace with hash 1158906322, now seen corresponding path program 1 times [2025-03-16 19:11:40,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:11:40,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636995113] [2025-03-16 19:11:40,188 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:11:40,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:11:40,213 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 90 statements into 1 equivalence classes. [2025-03-16 19:11:40,220 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 90 of 90 statements. [2025-03-16 19:11:40,220 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:11:40,220 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:11:40,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:11:40,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:11:40,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636995113] [2025-03-16 19:11:40,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636995113] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:11:40,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:11:40,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-16 19:11:40,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560253085] [2025-03-16 19:11:40,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:11:40,262 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 19:11:40,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:11:40,262 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 19:11:40,262 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 19:11:40,262 INFO L87 Difference]: Start difference. First operand 2429 states and 3732 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:11:40,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:11:40,320 INFO L93 Difference]: Finished difference Result 6961 states and 10726 transitions. [2025-03-16 19:11:40,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 19:11:40,321 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2025-03-16 19:11:40,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:11:40,334 INFO L225 Difference]: With dead ends: 6961 [2025-03-16 19:11:40,334 INFO L226 Difference]: Without dead ends: 4599 [2025-03-16 19:11:40,338 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 19:11:40,339 INFO L435 NwaCegarLoop]: 238 mSDtfsCounter, 78 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 19:11:40,339 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 351 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 19:11:40,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4599 states. [2025-03-16 19:11:40,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4599 to 4597. [2025-03-16 19:11:40,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4597 states, 4596 states have (on average 1.525674499564839) internal successors, (7012), 4596 states have internal predecessors, (7012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:11:40,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4597 states to 4597 states and 7012 transitions. [2025-03-16 19:11:40,444 INFO L78 Accepts]: Start accepts. Automaton has 4597 states and 7012 transitions. Word has length 90 [2025-03-16 19:11:40,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:11:40,444 INFO L471 AbstractCegarLoop]: Abstraction has 4597 states and 7012 transitions. [2025-03-16 19:11:40,444 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:11:40,444 INFO L276 IsEmpty]: Start isEmpty. Operand 4597 states and 7012 transitions. [2025-03-16 19:11:40,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2025-03-16 19:11:40,445 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:11:40,445 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:11:40,445 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-16 19:11:40,445 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:11:40,446 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:11:40,446 INFO L85 PathProgramCache]: Analyzing trace with hash 1982129362, now seen corresponding path program 1 times [2025-03-16 19:11:40,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:11:40,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549259106] [2025-03-16 19:11:40,446 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:11:40,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:11:40,465 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 90 statements into 1 equivalence classes. [2025-03-16 19:11:40,476 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 90 of 90 statements. [2025-03-16 19:11:40,478 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:11:40,479 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:11:40,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:11:40,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:11:40,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549259106] [2025-03-16 19:11:40,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549259106] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:11:40,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:11:40,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-16 19:11:40,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646682316] [2025-03-16 19:11:40,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:11:40,527 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 19:11:40,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:11:40,527 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 19:11:40,527 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 19:11:40,528 INFO L87 Difference]: Start difference. First operand 4597 states and 7012 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:11:40,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:11:40,656 INFO L93 Difference]: Finished difference Result 13273 states and 20230 transitions. [2025-03-16 19:11:40,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 19:11:40,657 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2025-03-16 19:11:40,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:11:40,686 INFO L225 Difference]: With dead ends: 13273 [2025-03-16 19:11:40,686 INFO L226 Difference]: Without dead ends: 8743 [2025-03-16 19:11:40,692 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 19:11:40,693 INFO L435 NwaCegarLoop]: 236 mSDtfsCounter, 76 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 353 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 19:11:40,694 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 353 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 19:11:40,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8743 states. [2025-03-16 19:11:40,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8743 to 8741. [2025-03-16 19:11:40,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8741 states, 8740 states have (on average 1.508924485125858) internal successors, (13188), 8740 states have internal predecessors, (13188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:11:40,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8741 states to 8741 states and 13188 transitions. [2025-03-16 19:11:40,903 INFO L78 Accepts]: Start accepts. Automaton has 8741 states and 13188 transitions. Word has length 90 [2025-03-16 19:11:40,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:11:40,903 INFO L471 AbstractCegarLoop]: Abstraction has 8741 states and 13188 transitions. [2025-03-16 19:11:40,903 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:11:40,903 INFO L276 IsEmpty]: Start isEmpty. Operand 8741 states and 13188 transitions. [2025-03-16 19:11:40,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2025-03-16 19:11:40,907 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:11:40,907 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:11:40,908 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-16 19:11:40,908 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:11:40,908 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:11:40,908 INFO L85 PathProgramCache]: Analyzing trace with hash 1915946962, now seen corresponding path program 1 times [2025-03-16 19:11:40,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:11:40,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126014367] [2025-03-16 19:11:40,908 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:11:40,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:11:40,923 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 90 statements into 1 equivalence classes. [2025-03-16 19:11:40,930 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 90 of 90 statements. [2025-03-16 19:11:40,930 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:11:40,930 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:11:41,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:11:41,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:11:41,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126014367] [2025-03-16 19:11:41,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126014367] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:11:41,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:11:41,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-16 19:11:41,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826086733] [2025-03-16 19:11:41,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:11:41,001 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 19:11:41,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:11:41,002 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 19:11:41,002 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 19:11:41,002 INFO L87 Difference]: Start difference. First operand 8741 states and 13188 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:11:41,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:11:41,181 INFO L93 Difference]: Finished difference Result 25321 states and 38086 transitions. [2025-03-16 19:11:41,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 19:11:41,182 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2025-03-16 19:11:41,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:11:41,233 INFO L225 Difference]: With dead ends: 25321 [2025-03-16 19:11:41,233 INFO L226 Difference]: Without dead ends: 16647 [2025-03-16 19:11:41,248 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 19:11:41,249 INFO L435 NwaCegarLoop]: 234 mSDtfsCounter, 74 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 19:11:41,249 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 355 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 19:11:41,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16647 states. [2025-03-16 19:11:41,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16647 to 16645. [2025-03-16 19:11:41,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16645 states, 16644 states have (on average 1.4883441480413362) internal successors, (24772), 16644 states have internal predecessors, (24772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:11:41,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16645 states to 16645 states and 24772 transitions. [2025-03-16 19:11:41,772 INFO L78 Accepts]: Start accepts. Automaton has 16645 states and 24772 transitions. Word has length 90 [2025-03-16 19:11:41,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:11:41,773 INFO L471 AbstractCegarLoop]: Abstraction has 16645 states and 24772 transitions. [2025-03-16 19:11:41,773 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:11:41,774 INFO L276 IsEmpty]: Start isEmpty. Operand 16645 states and 24772 transitions. [2025-03-16 19:11:41,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2025-03-16 19:11:41,775 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:11:41,775 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:11:41,775 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-16 19:11:41,775 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:11:41,776 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:11:41,776 INFO L85 PathProgramCache]: Analyzing trace with hash 1366158034, now seen corresponding path program 1 times [2025-03-16 19:11:41,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:11:41,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583718908] [2025-03-16 19:11:41,776 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:11:41,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:11:41,791 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 90 statements into 1 equivalence classes. [2025-03-16 19:11:41,800 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 90 of 90 statements. [2025-03-16 19:11:41,800 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:11:41,801 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:11:41,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-16 19:11:41,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:11:41,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583718908] [2025-03-16 19:11:41,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583718908] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:11:41,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:11:41,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-16 19:11:41,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001989150] [2025-03-16 19:11:41,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:11:41,846 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-16 19:11:41,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:11:41,847 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-16 19:11:41,847 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 19:11:41,847 INFO L87 Difference]: Start difference. First operand 16645 states and 24772 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:11:42,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:11:42,289 INFO L93 Difference]: Finished difference Result 48265 states and 71494 transitions. [2025-03-16 19:11:42,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-16 19:11:42,289 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2025-03-16 19:11:42,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:11:42,344 INFO L225 Difference]: With dead ends: 48265 [2025-03-16 19:11:42,344 INFO L226 Difference]: Without dead ends: 31687 [2025-03-16 19:11:42,357 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-16 19:11:42,357 INFO L435 NwaCegarLoop]: 232 mSDtfsCounter, 72 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-16 19:11:42,357 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 357 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-16 19:11:42,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31687 states. [2025-03-16 19:11:42,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31687 to 31685. [2025-03-16 19:11:42,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31685 states, 31684 states have (on average 1.46458780457013) internal successors, (46404), 31684 states have internal predecessors, (46404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:11:43,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31685 states to 31685 states and 46404 transitions. [2025-03-16 19:11:43,113 INFO L78 Accepts]: Start accepts. Automaton has 31685 states and 46404 transitions. Word has length 90 [2025-03-16 19:11:43,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:11:43,114 INFO L471 AbstractCegarLoop]: Abstraction has 31685 states and 46404 transitions. [2025-03-16 19:11:43,114 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:11:43,114 INFO L276 IsEmpty]: Start isEmpty. Operand 31685 states and 46404 transitions. [2025-03-16 19:11:43,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2025-03-16 19:11:43,119 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:11:43,120 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:11:43,120 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-03-16 19:11:43,120 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:11:43,120 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:11:43,120 INFO L85 PathProgramCache]: Analyzing trace with hash 458731971, now seen corresponding path program 1 times [2025-03-16 19:11:43,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:11:43,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395495866] [2025-03-16 19:11:43,120 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:11:43,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:11:43,138 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 114 statements into 1 equivalence classes. [2025-03-16 19:11:43,153 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 114 of 114 statements. [2025-03-16 19:11:43,153 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:11:43,153 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:11:43,399 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-16 19:11:43,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:11:43,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395495866] [2025-03-16 19:11:43,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395495866] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:11:43,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:11:43,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-16 19:11:43,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099227616] [2025-03-16 19:11:43,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:11:43,400 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-16 19:11:43,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:11:43,401 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-16 19:11:43,401 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2025-03-16 19:11:43,401 INFO L87 Difference]: Start difference. First operand 31685 states and 46404 transitions. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:11:46,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:11:46,270 INFO L93 Difference]: Finished difference Result 281303 states and 412109 transitions. [2025-03-16 19:11:46,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-16 19:11:46,271 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2025-03-16 19:11:46,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:11:46,871 INFO L225 Difference]: With dead ends: 281303 [2025-03-16 19:11:46,871 INFO L226 Difference]: Without dead ends: 259285 [2025-03-16 19:11:46,917 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2025-03-16 19:11:47,003 INFO L435 NwaCegarLoop]: 260 mSDtfsCounter, 1535 mSDsluCounter, 2455 mSDsCounter, 0 mSdLazyCounter, 320 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1535 SdHoareTripleChecker+Valid, 2715 SdHoareTripleChecker+Invalid, 320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-16 19:11:47,003 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1535 Valid, 2715 Invalid, 320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 320 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-16 19:11:47,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259285 states. [2025-03-16 19:11:49,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259285 to 58565. [2025-03-16 19:11:49,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58565 states, 58564 states have (on average 1.4589850420053274) internal successors, (85444), 58564 states have internal predecessors, (85444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:11:49,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58565 states to 58565 states and 85444 transitions. [2025-03-16 19:11:49,989 INFO L78 Accepts]: Start accepts. Automaton has 58565 states and 85444 transitions. Word has length 114 [2025-03-16 19:11:49,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:11:49,989 INFO L471 AbstractCegarLoop]: Abstraction has 58565 states and 85444 transitions. [2025-03-16 19:11:49,990 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:11:49,990 INFO L276 IsEmpty]: Start isEmpty. Operand 58565 states and 85444 transitions. [2025-03-16 19:11:49,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2025-03-16 19:11:49,997 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:11:49,997 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:11:49,997 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-03-16 19:11:49,997 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:11:49,998 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:11:49,998 INFO L85 PathProgramCache]: Analyzing trace with hash 576066755, now seen corresponding path program 1 times [2025-03-16 19:11:49,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:11:49,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057243295] [2025-03-16 19:11:49,998 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:11:49,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:11:50,014 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 114 statements into 1 equivalence classes. [2025-03-16 19:11:50,034 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 114 of 114 statements. [2025-03-16 19:11:50,036 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:11:50,036 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:11:50,261 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-03-16 19:11:50,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:11:50,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057243295] [2025-03-16 19:11:50,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057243295] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:11:50,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:11:50,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-16 19:11:50,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936404895] [2025-03-16 19:11:50,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:11:50,262 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-16 19:11:50,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:11:50,263 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-16 19:11:50,263 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2025-03-16 19:11:50,263 INFO L87 Difference]: Start difference. First operand 58565 states and 85444 transitions. Second operand has 10 states, 10 states have (on average 11.1) internal successors, (111), 10 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:11:54,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:11:54,229 INFO L93 Difference]: Finished difference Result 312919 states and 458189 transitions. [2025-03-16 19:11:54,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-16 19:11:54,229 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.1) internal successors, (111), 10 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2025-03-16 19:11:54,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:11:54,632 INFO L225 Difference]: With dead ends: 312919 [2025-03-16 19:11:54,632 INFO L226 Difference]: Without dead ends: 281301 [2025-03-16 19:11:54,699 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2025-03-16 19:11:54,699 INFO L435 NwaCegarLoop]: 259 mSDtfsCounter, 1537 mSDsluCounter, 2407 mSDsCounter, 0 mSdLazyCounter, 313 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1537 SdHoareTripleChecker+Valid, 2666 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-16 19:11:54,700 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1537 Valid, 2666 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 313 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-16 19:11:54,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281301 states. [2025-03-16 19:11:58,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281301 to 101189. [2025-03-16 19:11:58,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101189 states, 101188 states have (on average 1.4553899671897854) internal successors, (147268), 101188 states have internal predecessors, (147268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:11:58,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101189 states to 101189 states and 147268 transitions. [2025-03-16 19:11:58,490 INFO L78 Accepts]: Start accepts. Automaton has 101189 states and 147268 transitions. Word has length 114 [2025-03-16 19:11:58,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:11:58,491 INFO L471 AbstractCegarLoop]: Abstraction has 101189 states and 147268 transitions. [2025-03-16 19:11:58,491 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.1) internal successors, (111), 10 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:11:58,491 INFO L276 IsEmpty]: Start isEmpty. Operand 101189 states and 147268 transitions. [2025-03-16 19:11:58,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2025-03-16 19:11:58,501 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:11:58,501 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:11:58,501 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-03-16 19:11:58,501 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:11:58,501 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:11:58,502 INFO L85 PathProgramCache]: Analyzing trace with hash -1953417277, now seen corresponding path program 1 times [2025-03-16 19:11:58,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:11:58,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819844542] [2025-03-16 19:11:58,502 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:11:58,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:11:58,520 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 114 statements into 1 equivalence classes. [2025-03-16 19:11:58,533 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 114 of 114 statements. [2025-03-16 19:11:58,533 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:11:58,533 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:11:58,771 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-03-16 19:11:58,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:11:58,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819844542] [2025-03-16 19:11:58,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819844542] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:11:58,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:11:58,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-16 19:11:58,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693747197] [2025-03-16 19:11:58,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:11:58,773 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-16 19:11:58,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:11:58,773 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-16 19:11:58,773 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2025-03-16 19:11:58,774 INFO L87 Difference]: Start difference. First operand 101189 states and 147268 transitions. Second operand has 10 states, 10 states have (on average 10.9) internal successors, (109), 10 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:12:04,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-16 19:12:04,690 INFO L93 Difference]: Finished difference Result 344535 states and 504141 transitions. [2025-03-16 19:12:04,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-16 19:12:04,691 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.9) internal successors, (109), 10 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2025-03-16 19:12:04,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-16 19:12:05,190 INFO L225 Difference]: With dead ends: 344535 [2025-03-16 19:12:05,191 INFO L226 Difference]: Without dead ends: 312917 [2025-03-16 19:12:05,257 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2025-03-16 19:12:05,257 INFO L435 NwaCegarLoop]: 257 mSDtfsCounter, 1558 mSDsluCounter, 2328 mSDsCounter, 0 mSdLazyCounter, 309 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1558 SdHoareTripleChecker+Valid, 2585 SdHoareTripleChecker+Invalid, 309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-16 19:12:05,257 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1558 Valid, 2585 Invalid, 309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 309 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-16 19:12:05,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312917 states. [2025-03-16 19:12:09,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312917 to 132805. [2025-03-16 19:12:09,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132805 states, 132804 states have (on average 1.454926056444083) internal successors, (193220), 132804 states have internal predecessors, (193220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:12:09,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132805 states to 132805 states and 193220 transitions. [2025-03-16 19:12:09,937 INFO L78 Accepts]: Start accepts. Automaton has 132805 states and 193220 transitions. Word has length 114 [2025-03-16 19:12:09,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-16 19:12:09,937 INFO L471 AbstractCegarLoop]: Abstraction has 132805 states and 193220 transitions. [2025-03-16 19:12:09,937 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.9) internal successors, (109), 10 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-16 19:12:09,937 INFO L276 IsEmpty]: Start isEmpty. Operand 132805 states and 193220 transitions. [2025-03-16 19:12:09,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2025-03-16 19:12:09,949 INFO L210 NwaCegarLoop]: Found error trace [2025-03-16 19:12:09,949 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-16 19:12:09,949 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-03-16 19:12:09,949 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-16 19:12:09,949 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-16 19:12:09,953 INFO L85 PathProgramCache]: Analyzing trace with hash 1060707011, now seen corresponding path program 1 times [2025-03-16 19:12:09,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-16 19:12:09,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302052861] [2025-03-16 19:12:09,954 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-16 19:12:09,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-16 19:12:09,967 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 114 statements into 1 equivalence classes. [2025-03-16 19:12:09,980 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 114 of 114 statements. [2025-03-16 19:12:09,980 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-16 19:12:09,980 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-16 19:12:10,197 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-03-16 19:12:10,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-16 19:12:10,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302052861] [2025-03-16 19:12:10,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302052861] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-16 19:12:10,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-16 19:12:10,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-16 19:12:10,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599054349] [2025-03-16 19:12:10,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-16 19:12:10,198 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-16 19:12:10,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-16 19:12:10,198 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-16 19:12:10,198 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2025-03-16 19:12:10,199 INFO L87 Difference]: Start difference. First operand 132805 states and 193220 transitions. Second operand has 10 states, 10 states have (on average 10.7) internal successors, (107), 10 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)