./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem17_label57.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 023d838f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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_1.5.800.v20200727-1323.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/eca-rers2012/Problem17_label57.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 0e82c46cc7c6a1ae6528ac072c5cfd2ae759a81ebaffa85f079f32af9f51d4a1 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-09 19:55:22,299 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 19:55:22,382 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 19:55:22,387 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 19:55:22,387 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 19:55:22,421 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 19:55:22,422 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 19:55:22,422 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 19:55:22,423 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 19:55:22,423 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 19:55:22,425 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 19:55:22,425 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 19:55:22,426 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 19:55:22,428 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 19:55:22,430 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 19:55:22,431 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 19:55:22,431 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 19:55:22,431 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 19:55:22,431 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 19:55:22,431 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 19:55:22,432 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 19:55:22,434 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 19:55:22,434 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 19:55:22,434 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 19:55:22,434 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 19:55:22,435 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 19:55:22,435 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 19:55:22,435 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 19:55:22,435 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-09 19:55:22,436 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 19:55:22,436 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 19:55:22,436 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 19:55:22,436 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 19:55:22,436 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 19:55:22,437 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 19:55:22,437 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 19:55:22,437 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 19:55:22,437 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 19:55:22,438 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 19:55:22,438 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 19:55:22,439 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 19:55:22,439 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 19:55:22,439 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0e82c46cc7c6a1ae6528ac072c5cfd2ae759a81ebaffa85f079f32af9f51d4a1 [2024-11-09 19:55:22,661 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 19:55:22,685 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 19:55:22,688 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 19:55:22,689 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 19:55:22,690 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 19:55:22,691 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem17_label57.c [2024-11-09 19:55:24,157 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 19:55:24,521 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 19:55:24,522 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label57.c [2024-11-09 19:55:24,547 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83492b7f1/ef9bcea994024c82a741c35488aa6813/FLAG9e211d157 [2024-11-09 19:55:24,716 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83492b7f1/ef9bcea994024c82a741c35488aa6813 [2024-11-09 19:55:24,719 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 19:55:24,720 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 19:55:24,724 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 19:55:24,724 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 19:55:24,729 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 19:55:24,729 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:55:24" (1/1) ... [2024-11-09 19:55:24,730 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@577dd4bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:55:24, skipping insertion in model container [2024-11-09 19:55:24,730 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:55:24" (1/1) ... [2024-11-09 19:55:24,822 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 19:55:25,097 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/eca-rers2012/Problem17_label57.c[2672,2685] [2024-11-09 19:55:25,729 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 19:55:25,738 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 19:55:25,760 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/eca-rers2012/Problem17_label57.c[2672,2685] [2024-11-09 19:55:25,996 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 19:55:26,017 INFO L204 MainTranslator]: Completed translation [2024-11-09 19:55:26,018 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:55:26 WrapperNode [2024-11-09 19:55:26,018 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 19:55:26,019 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 19:55:26,019 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 19:55:26,019 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 19:55:26,025 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:55:26" (1/1) ... [2024-11-09 19:55:26,071 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:55:26" (1/1) ... [2024-11-09 19:55:26,333 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 2612 [2024-11-09 19:55:26,334 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 19:55:26,335 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 19:55:26,335 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 19:55:26,335 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 19:55:26,345 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:55:26" (1/1) ... [2024-11-09 19:55:26,345 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:55:26" (1/1) ... [2024-11-09 19:55:26,387 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:55:26" (1/1) ... [2024-11-09 19:55:26,552 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]. [2024-11-09 19:55:26,553 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:55:26" (1/1) ... [2024-11-09 19:55:26,553 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:55:26" (1/1) ... [2024-11-09 19:55:26,670 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:55:26" (1/1) ... [2024-11-09 19:55:26,683 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:55:26" (1/1) ... [2024-11-09 19:55:26,699 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:55:26" (1/1) ... [2024-11-09 19:55:26,709 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:55:26" (1/1) ... [2024-11-09 19:55:26,742 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 19:55:26,744 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-09 19:55:26,744 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-09 19:55:26,745 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-09 19:55:26,746 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:55:26" (1/1) ... [2024-11-09 19:55:26,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 19:55:26,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:55:26,780 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) [2024-11-09 19:55:26,783 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 [2024-11-09 19:55:26,825 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 19:55:26,825 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 19:55:26,825 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 19:55:26,826 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 19:55:26,884 INFO L256 CfgBuilder]: Building ICFG [2024-11-09 19:55:26,886 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 19:55:30,587 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L1653: havoc calculate_output_#t~ret7#1; [2024-11-09 19:55:30,830 INFO L? ?]: Removed 949 outVars from TransFormulas that were not future-live. [2024-11-09 19:55:30,831 INFO L307 CfgBuilder]: Performing block encoding [2024-11-09 19:55:30,866 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 19:55:30,867 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 19:55:30,868 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 07:55:30 BoogieIcfgContainer [2024-11-09 19:55:30,868 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-09 19:55:30,870 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 19:55:30,870 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 19:55:30,874 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 19:55:30,875 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 07:55:24" (1/3) ... [2024-11-09 19:55:30,875 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dfa8f82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:55:30, skipping insertion in model container [2024-11-09 19:55:30,876 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:55:26" (2/3) ... [2024-11-09 19:55:30,876 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dfa8f82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:55:30, skipping insertion in model container [2024-11-09 19:55:30,876 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 07:55:30" (3/3) ... [2024-11-09 19:55:30,878 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label57.c [2024-11-09 19:55:30,893 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 19:55:30,893 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 19:55:30,970 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 19:55:30,977 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;@b4815cb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 19:55:30,977 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 19:55:30,987 INFO L276 IsEmpty]: Start isEmpty. Operand has 593 states, 591 states have (on average 2.4077834179357023) internal successors, (1423), 592 states have internal predecessors, (1423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:55:30,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-09 19:55:30,994 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:55:30,994 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:55:30,995 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:55:31,000 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:55:31,000 INFO L85 PathProgramCache]: Analyzing trace with hash -1745815674, now seen corresponding path program 1 times [2024-11-09 19:55:31,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:55:31,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439931931] [2024-11-09 19:55:31,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:55:31,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:55:31,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:55:31,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:55:31,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:55:31,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439931931] [2024-11-09 19:55:31,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439931931] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:55:31,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:55:31,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 19:55:31,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290193013] [2024-11-09 19:55:31,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:55:31,295 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:55:31,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:55:31,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:55:31,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:55:31,324 INFO L87 Difference]: Start difference. First operand has 593 states, 591 states have (on average 2.4077834179357023) internal successors, (1423), 592 states have internal predecessors, (1423), 0 states have call successors, (0), 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 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:55:34,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:55:34,368 INFO L93 Difference]: Finished difference Result 1650 states and 4109 transitions. [2024-11-09 19:55:34,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:55:34,370 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 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 19 [2024-11-09 19:55:34,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:55:34,395 INFO L225 Difference]: With dead ends: 1650 [2024-11-09 19:55:34,395 INFO L226 Difference]: Without dead ends: 980 [2024-11-09 19:55:34,400 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:55:34,403 INFO L432 NwaCegarLoop]: 426 mSDtfsCounter, 829 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 2186 mSolverCounterSat, 332 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 829 SdHoareTripleChecker+Valid, 506 SdHoareTripleChecker+Invalid, 2518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 332 IncrementalHoareTripleChecker+Valid, 2186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-09 19:55:34,404 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [829 Valid, 506 Invalid, 2518 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [332 Valid, 2186 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-09 19:55:34,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 980 states. [2024-11-09 19:55:34,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 980 to 974. [2024-11-09 19:55:34,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 974 states, 973 states have (on average 2.287769784172662) internal successors, (2226), 973 states have internal predecessors, (2226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:55:34,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 974 states to 974 states and 2226 transitions. [2024-11-09 19:55:34,497 INFO L78 Accepts]: Start accepts. Automaton has 974 states and 2226 transitions. Word has length 19 [2024-11-09 19:55:34,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:55:34,498 INFO L471 AbstractCegarLoop]: Abstraction has 974 states and 2226 transitions. [2024-11-09 19:55:34,498 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:55:34,498 INFO L276 IsEmpty]: Start isEmpty. Operand 974 states and 2226 transitions. [2024-11-09 19:55:34,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-09 19:55:34,501 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:55:34,501 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-09 19:55:34,502 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 19:55:34,502 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:55:34,503 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:55:34,503 INFO L85 PathProgramCache]: Analyzing trace with hash -1657302810, now seen corresponding path program 1 times [2024-11-09 19:55:34,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:55:34,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843935523] [2024-11-09 19:55:34,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:55:34,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:55:34,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:55:34,796 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:55:34,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:55:34,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843935523] [2024-11-09 19:55:34,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843935523] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:55:34,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:55:34,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 19:55:34,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572270433] [2024-11-09 19:55:34,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:55:34,799 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:55:34,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:55:34,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:55:34,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:55:34,802 INFO L87 Difference]: Start difference. First operand 974 states and 2226 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:55:37,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:55:37,792 INFO L93 Difference]: Finished difference Result 2824 states and 6539 transitions. [2024-11-09 19:55:37,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:55:37,792 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2024-11-09 19:55:37,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:55:37,800 INFO L225 Difference]: With dead ends: 2824 [2024-11-09 19:55:37,800 INFO L226 Difference]: Without dead ends: 1852 [2024-11-09 19:55:37,802 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:55:37,803 INFO L432 NwaCegarLoop]: 511 mSDtfsCounter, 766 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 2098 mSolverCounterSat, 324 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 766 SdHoareTripleChecker+Valid, 586 SdHoareTripleChecker+Invalid, 2422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 324 IncrementalHoareTripleChecker+Valid, 2098 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-09 19:55:37,803 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [766 Valid, 586 Invalid, 2422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [324 Valid, 2098 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-09 19:55:37,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1852 states. [2024-11-09 19:55:37,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1852 to 1846. [2024-11-09 19:55:37,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1846 states, 1845 states have (on average 2.1257452574525746) internal successors, (3922), 1845 states have internal predecessors, (3922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:55:37,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1846 states to 1846 states and 3922 transitions. [2024-11-09 19:55:37,844 INFO L78 Accepts]: Start accepts. Automaton has 1846 states and 3922 transitions. Word has length 87 [2024-11-09 19:55:37,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:55:37,845 INFO L471 AbstractCegarLoop]: Abstraction has 1846 states and 3922 transitions. [2024-11-09 19:55:37,846 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:55:37,846 INFO L276 IsEmpty]: Start isEmpty. Operand 1846 states and 3922 transitions. [2024-11-09 19:55:37,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-11-09 19:55:37,850 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:55:37,850 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-09 19:55:37,851 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 19:55:37,853 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:55:37,853 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:55:37,853 INFO L85 PathProgramCache]: Analyzing trace with hash 1431583567, now seen corresponding path program 1 times [2024-11-09 19:55:37,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:55:37,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161956317] [2024-11-09 19:55:37,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:55:37,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:55:37,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:55:38,069 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:55:38,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:55:38,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161956317] [2024-11-09 19:55:38,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161956317] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:55:38,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:55:38,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:55:38,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786098314] [2024-11-09 19:55:38,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:55:38,071 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:55:38,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:55:38,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:55:38,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:55:38,073 INFO L87 Difference]: Start difference. First operand 1846 states and 3922 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) [2024-11-09 19:55:40,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:55:40,755 INFO L93 Difference]: Finished difference Result 4564 states and 9877 transitions. [2024-11-09 19:55:40,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:55:40,755 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 [2024-11-09 19:55:40,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:55:40,767 INFO L225 Difference]: With dead ends: 4564 [2024-11-09 19:55:40,768 INFO L226 Difference]: Without dead ends: 2720 [2024-11-09 19:55:40,770 INFO L431 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 [2024-11-09 19:55:40,771 INFO L432 NwaCegarLoop]: 1180 mSDtfsCounter, 848 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 1980 mSolverCounterSat, 415 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 848 SdHoareTripleChecker+Valid, 1250 SdHoareTripleChecker+Invalid, 2395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 415 IncrementalHoareTripleChecker+Valid, 1980 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-09 19:55:40,772 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [848 Valid, 1250 Invalid, 2395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [415 Valid, 1980 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-09 19:55:40,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2720 states. [2024-11-09 19:55:40,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2720 to 2718. [2024-11-09 19:55:40,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2718 states, 2717 states have (on average 2.090541037909459) internal successors, (5680), 2717 states have internal predecessors, (5680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:55:40,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2718 states to 2718 states and 5680 transitions. [2024-11-09 19:55:40,820 INFO L78 Accepts]: Start accepts. Automaton has 2718 states and 5680 transitions. Word has length 90 [2024-11-09 19:55:40,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:55:40,821 INFO L471 AbstractCegarLoop]: Abstraction has 2718 states and 5680 transitions. [2024-11-09 19:55:40,821 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) [2024-11-09 19:55:40,821 INFO L276 IsEmpty]: Start isEmpty. Operand 2718 states and 5680 transitions. [2024-11-09 19:55:40,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-11-09 19:55:40,824 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:55:40,824 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-09 19:55:40,824 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 19:55:40,824 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:55:40,825 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:55:40,826 INFO L85 PathProgramCache]: Analyzing trace with hash 846216277, now seen corresponding path program 1 times [2024-11-09 19:55:40,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:55:40,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913635443] [2024-11-09 19:55:40,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:55:40,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:55:40,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:55:41,076 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2024-11-09 19:55:41,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:55:41,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913635443] [2024-11-09 19:55:41,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913635443] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:55:41,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:55:41,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 19:55:41,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908561554] [2024-11-09 19:55:41,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:55:41,077 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:55:41,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:55:41,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:55:41,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:55:41,080 INFO L87 Difference]: Start difference. First operand 2718 states and 5680 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:55:43,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:55:43,276 INFO L93 Difference]: Finished difference Result 8004 states and 16828 transitions. [2024-11-09 19:55:43,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:55:43,277 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 160 [2024-11-09 19:55:43,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:55:43,293 INFO L225 Difference]: With dead ends: 8004 [2024-11-09 19:55:43,293 INFO L226 Difference]: Without dead ends: 4432 [2024-11-09 19:55:43,296 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:55:43,297 INFO L432 NwaCegarLoop]: 516 mSDtfsCounter, 745 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 1797 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 745 SdHoareTripleChecker+Valid, 592 SdHoareTripleChecker+Invalid, 2345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 548 IncrementalHoareTripleChecker+Valid, 1797 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-09 19:55:43,298 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [745 Valid, 592 Invalid, 2345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 1797 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-09 19:55:43,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4432 states. [2024-11-09 19:55:43,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4432 to 3575. [2024-11-09 19:55:43,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3575 states, 3574 states have (on average 1.978735310576385) internal successors, (7072), 3574 states have internal predecessors, (7072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:55:43,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3575 states to 3575 states and 7072 transitions. [2024-11-09 19:55:43,365 INFO L78 Accepts]: Start accepts. Automaton has 3575 states and 7072 transitions. Word has length 160 [2024-11-09 19:55:43,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:55:43,365 INFO L471 AbstractCegarLoop]: Abstraction has 3575 states and 7072 transitions. [2024-11-09 19:55:43,366 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:55:43,366 INFO L276 IsEmpty]: Start isEmpty. Operand 3575 states and 7072 transitions. [2024-11-09 19:55:43,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2024-11-09 19:55:43,367 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:55:43,368 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-09 19:55:43,368 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 19:55:43,368 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:55:43,369 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:55:43,369 INFO L85 PathProgramCache]: Analyzing trace with hash -851394, now seen corresponding path program 1 times [2024-11-09 19:55:43,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:55:43,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926755429] [2024-11-09 19:55:43,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:55:43,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:55:43,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:55:43,582 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:55:43,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:55:43,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926755429] [2024-11-09 19:55:43,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926755429] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:55:43,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:55:43,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:55:43,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565611527] [2024-11-09 19:55:43,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:55:43,584 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:55:43,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:55:43,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:55:43,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:55:43,585 INFO L87 Difference]: Start difference. First operand 3575 states and 7072 transitions. Second operand has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:55:45,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:55:45,891 INFO L93 Difference]: Finished difference Result 9286 states and 18619 transitions. [2024-11-09 19:55:45,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:55:45,892 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 0 states have call successors, (0), 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 173 [2024-11-09 19:55:45,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:55:45,915 INFO L225 Difference]: With dead ends: 9286 [2024-11-09 19:55:45,916 INFO L226 Difference]: Without dead ends: 5713 [2024-11-09 19:55:45,921 INFO L431 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 [2024-11-09 19:55:45,922 INFO L432 NwaCegarLoop]: 1087 mSDtfsCounter, 854 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 1852 mSolverCounterSat, 306 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 854 SdHoareTripleChecker+Valid, 1147 SdHoareTripleChecker+Invalid, 2158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 306 IncrementalHoareTripleChecker+Valid, 1852 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-09 19:55:45,922 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [854 Valid, 1147 Invalid, 2158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [306 Valid, 1852 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-09 19:55:45,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5713 states. [2024-11-09 19:55:46,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5713 to 5713. [2024-11-09 19:55:46,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5713 states, 5712 states have (on average 1.9740896358543418) internal successors, (11276), 5712 states have internal predecessors, (11276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:55:46,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5713 states to 5713 states and 11276 transitions. [2024-11-09 19:55:46,052 INFO L78 Accepts]: Start accepts. Automaton has 5713 states and 11276 transitions. Word has length 173 [2024-11-09 19:55:46,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:55:46,053 INFO L471 AbstractCegarLoop]: Abstraction has 5713 states and 11276 transitions. [2024-11-09 19:55:46,054 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:55:46,054 INFO L276 IsEmpty]: Start isEmpty. Operand 5713 states and 11276 transitions. [2024-11-09 19:55:46,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-11-09 19:55:46,057 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:55:46,057 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-09 19:55:46,057 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 19:55:46,058 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:55:46,059 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:55:46,059 INFO L85 PathProgramCache]: Analyzing trace with hash -351111132, now seen corresponding path program 1 times [2024-11-09 19:55:46,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:55:46,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141337613] [2024-11-09 19:55:46,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:55:46,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:55:46,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:55:46,398 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 31 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:55:46,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:55:46,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141337613] [2024-11-09 19:55:46,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141337613] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 19:55:46,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1400208542] [2024-11-09 19:55:46,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:55:46,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:55:46,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:55:46,403 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 19:55:46,407 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 19:55:46,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:55:46,524 INFO L255 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 19:55:46,531 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 19:55:46,794 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 31 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:55:46,795 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 19:55:47,093 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:55:47,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1400208542] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 19:55:47,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 19:55:47,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2024-11-09 19:55:47,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223237845] [2024-11-09 19:55:47,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:55:47,096 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 19:55:47,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:55:47,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 19:55:47,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-09 19:55:47,097 INFO L87 Difference]: Start difference. First operand 5713 states and 11276 transitions. Second operand has 4 states, 4 states have (on average 43.75) internal successors, (175), 3 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:55:50,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:55:50,894 INFO L93 Difference]: Finished difference Result 17003 states and 33957 transitions. [2024-11-09 19:55:50,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 19:55:50,895 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 43.75) internal successors, (175), 3 states have internal predecessors, (175), 0 states have call successors, (0), 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 175 [2024-11-09 19:55:50,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:55:50,929 INFO L225 Difference]: With dead ends: 17003 [2024-11-09 19:55:50,930 INFO L226 Difference]: Without dead ends: 10410 [2024-11-09 19:55:50,939 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 351 GetRequests, 347 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-09 19:55:50,943 INFO L432 NwaCegarLoop]: 93 mSDtfsCounter, 1765 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 3615 mSolverCounterSat, 1043 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1765 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 4658 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1043 IncrementalHoareTripleChecker+Valid, 3615 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2024-11-09 19:55:50,944 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1765 Valid, 160 Invalid, 4658 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1043 Valid, 3615 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2024-11-09 19:55:50,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10410 states. [2024-11-09 19:55:51,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10410 to 10404. [2024-11-09 19:55:51,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10404 states, 10403 states have (on average 1.980870902624243) internal successors, (20607), 10403 states have internal predecessors, (20607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:55:51,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10404 states to 10404 states and 20607 transitions. [2024-11-09 19:55:51,152 INFO L78 Accepts]: Start accepts. Automaton has 10404 states and 20607 transitions. Word has length 175 [2024-11-09 19:55:51,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:55:51,152 INFO L471 AbstractCegarLoop]: Abstraction has 10404 states and 20607 transitions. [2024-11-09 19:55:51,153 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.75) internal successors, (175), 3 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:55:51,153 INFO L276 IsEmpty]: Start isEmpty. Operand 10404 states and 20607 transitions. [2024-11-09 19:55:51,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2024-11-09 19:55:51,155 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:55:51,156 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:55:51,173 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 19:55:51,356 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-09 19:55:51,357 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:55:51,358 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:55:51,358 INFO L85 PathProgramCache]: Analyzing trace with hash -1554060395, now seen corresponding path program 1 times [2024-11-09 19:55:51,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:55:51,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205732402] [2024-11-09 19:55:51,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:55:51,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:55:51,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:55:51,915 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 47 proven. 217 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:55:51,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:55:51,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205732402] [2024-11-09 19:55:51,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205732402] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 19:55:51,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [151197432] [2024-11-09 19:55:51,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:55:51,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:55:51,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:55:51,919 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 19:55:51,921 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 19:55:52,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:55:52,053 INFO L255 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 19:55:52,062 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 19:55:52,265 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 174 proven. 74 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-09 19:55:52,266 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 19:55:52,514 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 248 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-09 19:55:52,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [151197432] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 19:55:52,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 19:55:52,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 3] total 6 [2024-11-09 19:55:52,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674885499] [2024-11-09 19:55:52,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:55:52,515 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 19:55:52,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:55:52,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 19:55:52,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-09 19:55:52,517 INFO L87 Difference]: Start difference. First operand 10404 states and 20607 transitions. Second operand has 4 states, 4 states have (on average 58.75) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:55:55,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:55:55,888 INFO L93 Difference]: Finished difference Result 28935 states and 57444 transitions. [2024-11-09 19:55:55,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 19:55:55,888 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 58.75) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 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 250 [2024-11-09 19:55:55,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:55:55,928 INFO L225 Difference]: With dead ends: 28935 [2024-11-09 19:55:55,929 INFO L226 Difference]: Without dead ends: 18533 [2024-11-09 19:55:55,943 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 502 GetRequests, 497 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-09 19:55:55,944 INFO L432 NwaCegarLoop]: 85 mSDtfsCounter, 1556 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 3700 mSolverCounterSat, 512 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1556 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 4212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 512 IncrementalHoareTripleChecker+Valid, 3700 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2024-11-09 19:55:55,944 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1556 Valid, 197 Invalid, 4212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [512 Valid, 3700 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2024-11-09 19:55:55,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18533 states. [2024-11-09 19:55:56,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18533 to 18526. [2024-11-09 19:55:56,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18526 states, 18525 states have (on average 1.9735492577597842) internal successors, (36560), 18525 states have internal predecessors, (36560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:55:56,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18526 states to 18526 states and 36560 transitions. [2024-11-09 19:55:56,400 INFO L78 Accepts]: Start accepts. Automaton has 18526 states and 36560 transitions. Word has length 250 [2024-11-09 19:55:56,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:55:56,401 INFO L471 AbstractCegarLoop]: Abstraction has 18526 states and 36560 transitions. [2024-11-09 19:55:56,401 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.75) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:55:56,402 INFO L276 IsEmpty]: Start isEmpty. Operand 18526 states and 36560 transitions. [2024-11-09 19:55:56,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2024-11-09 19:55:56,409 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:55:56,410 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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] [2024-11-09 19:55:56,427 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-09 19:55:56,613 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-09 19:55:56,614 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:55:56,615 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:55:56,615 INFO L85 PathProgramCache]: Analyzing trace with hash 1117469756, now seen corresponding path program 1 times [2024-11-09 19:55:56,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:55:56,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598378940] [2024-11-09 19:55:56,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:55:56,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:55:56,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:55:57,254 INFO L134 CoverageAnalysis]: Checked inductivity of 510 backedges. 411 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2024-11-09 19:55:57,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:55:57,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598378940] [2024-11-09 19:55:57,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598378940] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:55:57,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:55:57,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:55:57,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233144246] [2024-11-09 19:55:57,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:55:57,255 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:55:57,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:55:57,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:55:57,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:55:57,256 INFO L87 Difference]: Start difference. First operand 18526 states and 36560 transitions. Second operand has 3 states, 3 states have (on average 86.33333333333333) internal successors, (259), 3 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:55:59,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:55:59,576 INFO L93 Difference]: Finished difference Result 50754 states and 99702 transitions. [2024-11-09 19:55:59,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:55:59,576 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 86.33333333333333) internal successors, (259), 3 states have internal predecessors, (259), 0 states have call successors, (0), 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 356 [2024-11-09 19:55:59,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:55:59,648 INFO L225 Difference]: With dead ends: 50754 [2024-11-09 19:55:59,649 INFO L226 Difference]: Without dead ends: 32230 [2024-11-09 19:55:59,673 INFO L431 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 [2024-11-09 19:55:59,674 INFO L432 NwaCegarLoop]: 987 mSDtfsCounter, 785 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 2012 mSolverCounterSat, 202 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 785 SdHoareTripleChecker+Valid, 1031 SdHoareTripleChecker+Invalid, 2214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 202 IncrementalHoareTripleChecker+Valid, 2012 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-09 19:55:59,674 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [785 Valid, 1031 Invalid, 2214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [202 Valid, 2012 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-09 19:55:59,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32230 states. [2024-11-09 19:56:00,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32230 to 29640. [2024-11-09 19:56:00,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29640 states, 29639 states have (on average 1.964236310266878) internal successors, (58218), 29639 states have internal predecessors, (58218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:56:00,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29640 states to 29640 states and 58218 transitions. [2024-11-09 19:56:00,263 INFO L78 Accepts]: Start accepts. Automaton has 29640 states and 58218 transitions. Word has length 356 [2024-11-09 19:56:00,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:56:00,265 INFO L471 AbstractCegarLoop]: Abstraction has 29640 states and 58218 transitions. [2024-11-09 19:56:00,265 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 86.33333333333333) internal successors, (259), 3 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:56:00,265 INFO L276 IsEmpty]: Start isEmpty. Operand 29640 states and 58218 transitions. [2024-11-09 19:56:00,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2024-11-09 19:56:00,276 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:56:00,277 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-09 19:56:00,277 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-09 19:56:00,277 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:56:00,279 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:56:00,280 INFO L85 PathProgramCache]: Analyzing trace with hash -506862023, now seen corresponding path program 1 times [2024-11-09 19:56:00,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:56:00,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841733620] [2024-11-09 19:56:00,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:56:00,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:56:00,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:56:00,856 INFO L134 CoverageAnalysis]: Checked inductivity of 526 backedges. 428 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2024-11-09 19:56:00,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:56:00,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841733620] [2024-11-09 19:56:00,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841733620] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:56:00,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:56:00,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:56:00,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217885002] [2024-11-09 19:56:00,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:56:00,858 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:56:00,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:56:00,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:56:00,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:56:00,858 INFO L87 Difference]: Start difference. First operand 29640 states and 58218 transitions. Second operand has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:56:03,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:56:03,126 INFO L93 Difference]: Finished difference Result 68684 states and 135351 transitions. [2024-11-09 19:56:03,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:56:03,127 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 0 states have call successors, (0), 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 357 [2024-11-09 19:56:03,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:56:03,196 INFO L225 Difference]: With dead ends: 68684 [2024-11-09 19:56:03,196 INFO L226 Difference]: Without dead ends: 39045 [2024-11-09 19:56:03,328 INFO L431 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 [2024-11-09 19:56:03,329 INFO L432 NwaCegarLoop]: 968 mSDtfsCounter, 795 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 1890 mSolverCounterSat, 269 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 795 SdHoareTripleChecker+Valid, 1009 SdHoareTripleChecker+Invalid, 2159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 269 IncrementalHoareTripleChecker+Valid, 1890 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-09 19:56:03,329 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [795 Valid, 1009 Invalid, 2159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [269 Valid, 1890 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-09 19:56:03,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39045 states. [2024-11-09 19:56:03,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39045 to 36905. [2024-11-09 19:56:03,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36905 states, 36904 states have (on average 1.9680793409928463) internal successors, (72630), 36904 states have internal predecessors, (72630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:56:03,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36905 states to 36905 states and 72630 transitions. [2024-11-09 19:56:03,989 INFO L78 Accepts]: Start accepts. Automaton has 36905 states and 72630 transitions. Word has length 357 [2024-11-09 19:56:03,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:56:03,990 INFO L471 AbstractCegarLoop]: Abstraction has 36905 states and 72630 transitions. [2024-11-09 19:56:03,990 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:56:03,990 INFO L276 IsEmpty]: Start isEmpty. Operand 36905 states and 72630 transitions. [2024-11-09 19:56:03,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2024-11-09 19:56:03,999 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:56:04,000 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:56:04,000 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-09 19:56:04,001 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:56:04,001 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:56:04,001 INFO L85 PathProgramCache]: Analyzing trace with hash -573784011, now seen corresponding path program 1 times [2024-11-09 19:56:04,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:56:04,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432067027] [2024-11-09 19:56:04,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:56:04,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:56:04,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:56:04,637 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:56:04,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:56:04,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432067027] [2024-11-09 19:56:04,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432067027] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:56:04,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:56:04,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:56:04,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117842752] [2024-11-09 19:56:04,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:56:04,639 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 19:56:04,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:56:04,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 19:56:04,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:56:04,641 INFO L87 Difference]: Start difference. First operand 36905 states and 72630 transitions. Second operand has 4 states, 4 states have (on average 89.75) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:56:07,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:56:07,659 INFO L93 Difference]: Finished difference Result 78920 states and 155035 transitions. [2024-11-09 19:56:07,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 19:56:07,660 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 89.75) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 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 359 [2024-11-09 19:56:07,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:56:07,731 INFO L225 Difference]: With dead ends: 78920 [2024-11-09 19:56:07,731 INFO L226 Difference]: Without dead ends: 41591 [2024-11-09 19:56:07,758 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:56:07,759 INFO L432 NwaCegarLoop]: 141 mSDtfsCounter, 1311 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 3613 mSolverCounterSat, 228 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1311 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 3841 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 228 IncrementalHoareTripleChecker+Valid, 3613 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-09 19:56:07,760 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1311 Valid, 228 Invalid, 3841 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [228 Valid, 3613 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-09 19:56:07,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41591 states. [2024-11-09 19:56:08,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41591 to 37331. [2024-11-09 19:56:08,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37331 states, 37330 states have (on average 1.9666755960353604) internal successors, (73416), 37330 states have internal predecessors, (73416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:56:08,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37331 states to 37331 states and 73416 transitions. [2024-11-09 19:56:08,559 INFO L78 Accepts]: Start accepts. Automaton has 37331 states and 73416 transitions. Word has length 359 [2024-11-09 19:56:08,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:56:08,561 INFO L471 AbstractCegarLoop]: Abstraction has 37331 states and 73416 transitions. [2024-11-09 19:56:08,561 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 89.75) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:56:08,561 INFO L276 IsEmpty]: Start isEmpty. Operand 37331 states and 73416 transitions. [2024-11-09 19:56:08,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2024-11-09 19:56:08,570 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:56:08,570 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-09 19:56:08,570 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-09 19:56:08,571 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:56:08,571 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:56:08,571 INFO L85 PathProgramCache]: Analyzing trace with hash 1987272003, now seen corresponding path program 1 times [2024-11-09 19:56:08,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:56:08,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387460435] [2024-11-09 19:56:08,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:56:08,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:56:08,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:56:09,272 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 504 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-09 19:56:09,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:56:09,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387460435] [2024-11-09 19:56:09,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387460435] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:56:09,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:56:09,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 19:56:09,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539650370] [2024-11-09 19:56:09,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:56:09,273 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 19:56:09,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:56:09,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 19:56:09,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:56:09,275 INFO L87 Difference]: Start difference. First operand 37331 states and 73416 transitions. Second operand has 4 states, 4 states have (on average 86.5) internal successors, (346), 4 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:56:12,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:56:12,820 INFO L93 Difference]: Finished difference Result 100329 states and 197317 transitions. [2024-11-09 19:56:12,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 19:56:12,823 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 86.5) internal successors, (346), 4 states have internal predecessors, (346), 0 states have call successors, (0), 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 361 [2024-11-09 19:56:12,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:56:12,972 INFO L225 Difference]: With dead ends: 100329 [2024-11-09 19:56:12,973 INFO L226 Difference]: Without dead ends: 63426 [2024-11-09 19:56:12,996 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:56:12,997 INFO L432 NwaCegarLoop]: 104 mSDtfsCounter, 1535 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 3760 mSolverCounterSat, 410 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1535 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 4170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 410 IncrementalHoareTripleChecker+Valid, 3760 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-11-09 19:56:12,997 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1535 Valid, 205 Invalid, 4170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [410 Valid, 3760 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-11-09 19:56:13,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63426 states. [2024-11-09 19:56:13,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63426 to 58298. [2024-11-09 19:56:14,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58298 states, 58297 states have (on average 1.9698612278504897) internal successors, (114837), 58297 states have internal predecessors, (114837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:56:14,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58298 states to 58298 states and 114837 transitions. [2024-11-09 19:56:14,112 INFO L78 Accepts]: Start accepts. Automaton has 58298 states and 114837 transitions. Word has length 361 [2024-11-09 19:56:14,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:56:14,113 INFO L471 AbstractCegarLoop]: Abstraction has 58298 states and 114837 transitions. [2024-11-09 19:56:14,113 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 86.5) internal successors, (346), 4 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:56:14,113 INFO L276 IsEmpty]: Start isEmpty. Operand 58298 states and 114837 transitions. [2024-11-09 19:56:14,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2024-11-09 19:56:14,118 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:56:14,118 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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] [2024-11-09 19:56:14,119 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-09 19:56:14,119 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:56:14,119 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:56:14,119 INFO L85 PathProgramCache]: Analyzing trace with hash -1877286916, now seen corresponding path program 1 times [2024-11-09 19:56:14,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:56:14,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957001202] [2024-11-09 19:56:14,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:56:14,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:56:14,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:56:15,431 INFO L134 CoverageAnalysis]: Checked inductivity of 510 backedges. 323 proven. 83 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2024-11-09 19:56:15,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:56:15,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957001202] [2024-11-09 19:56:15,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957001202] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 19:56:15,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [431380822] [2024-11-09 19:56:15,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:56:15,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:56:15,433 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:56:15,434 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 19:56:15,435 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 19:56:15,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:56:15,633 INFO L255 TraceCheckSpWp]: Trace formula consists of 522 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 19:56:15,640 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 19:56:16,374 INFO L134 CoverageAnalysis]: Checked inductivity of 510 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 447 trivial. 0 not checked. [2024-11-09 19:56:16,374 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 19:56:16,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [431380822] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:56:16,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 19:56:16,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2024-11-09 19:56:16,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298274386] [2024-11-09 19:56:16,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:56:16,376 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:56:16,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:56:16,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:56:16,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-09 19:56:16,377 INFO L87 Difference]: Start difference. First operand 58298 states and 114837 transitions. Second operand has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:56:18,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:56:18,825 INFO L93 Difference]: Finished difference Result 124301 states and 245461 transitions. [2024-11-09 19:56:18,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:56:18,826 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 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 376 [2024-11-09 19:56:18,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:56:18,941 INFO L225 Difference]: With dead ends: 124301 [2024-11-09 19:56:18,942 INFO L226 Difference]: Without dead ends: 66001 [2024-11-09 19:56:18,987 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 379 GetRequests, 375 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-09 19:56:18,988 INFO L432 NwaCegarLoop]: 1054 mSDtfsCounter, 840 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 1949 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 840 SdHoareTripleChecker+Valid, 1114 SdHoareTripleChecker+Invalid, 2089 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 1949 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-09 19:56:18,988 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [840 Valid, 1114 Invalid, 2089 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 1949 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-09 19:56:19,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66001 states. [2024-11-09 19:56:19,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66001 to 65989. [2024-11-09 19:56:19,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65989 states, 65988 states have (on average 1.9701763957083107) internal successors, (130008), 65988 states have internal predecessors, (130008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:56:20,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65989 states to 65989 states and 130008 transitions. [2024-11-09 19:56:20,078 INFO L78 Accepts]: Start accepts. Automaton has 65989 states and 130008 transitions. Word has length 376 [2024-11-09 19:56:20,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:56:20,079 INFO L471 AbstractCegarLoop]: Abstraction has 65989 states and 130008 transitions. [2024-11-09 19:56:20,079 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:56:20,079 INFO L276 IsEmpty]: Start isEmpty. Operand 65989 states and 130008 transitions. [2024-11-09 19:56:20,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 503 [2024-11-09 19:56:20,094 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:56:20,094 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:56:20,112 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 19:56:20,298 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:56:20,299 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:56:20,299 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:56:20,299 INFO L85 PathProgramCache]: Analyzing trace with hash 814034207, now seen corresponding path program 1 times [2024-11-09 19:56:20,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:56:20,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937998222] [2024-11-09 19:56:20,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:56:20,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:56:20,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:56:20,881 INFO L134 CoverageAnalysis]: Checked inductivity of 538 backedges. 274 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-09 19:56:20,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:56:20,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937998222] [2024-11-09 19:56:20,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937998222] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:56:20,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:56:20,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:56:20,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036271964] [2024-11-09 19:56:20,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:56:20,883 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:56:20,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:56:20,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:56:20,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:56:20,884 INFO L87 Difference]: Start difference. First operand 65989 states and 130008 transitions. Second operand has 3 states, 3 states have (on average 107.66666666666667) internal successors, (323), 3 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:56:23,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:56:23,333 INFO L93 Difference]: Finished difference Result 137946 states and 271975 transitions. [2024-11-09 19:56:23,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:56:23,334 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 107.66666666666667) internal successors, (323), 3 states have internal predecessors, (323), 0 states have call successors, (0), 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 502 [2024-11-09 19:56:23,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:56:23,444 INFO L225 Difference]: With dead ends: 137946 [2024-11-09 19:56:23,444 INFO L226 Difference]: Without dead ends: 71952 [2024-11-09 19:56:23,474 INFO L431 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 [2024-11-09 19:56:23,475 INFO L432 NwaCegarLoop]: 995 mSDtfsCounter, 864 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 1871 mSolverCounterSat, 184 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 864 SdHoareTripleChecker+Valid, 1045 SdHoareTripleChecker+Invalid, 2055 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 184 IncrementalHoareTripleChecker+Valid, 1871 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-09 19:56:23,475 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [864 Valid, 1045 Invalid, 2055 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [184 Valid, 1871 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-09 19:56:23,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71952 states. [2024-11-09 19:56:24,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71952 to 64254. [2024-11-09 19:56:24,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64254 states, 64253 states have (on average 1.960282010178513) internal successors, (125954), 64253 states have internal predecessors, (125954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:56:24,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64254 states to 64254 states and 125954 transitions. [2024-11-09 19:56:24,963 INFO L78 Accepts]: Start accepts. Automaton has 64254 states and 125954 transitions. Word has length 502 [2024-11-09 19:56:24,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:56:24,964 INFO L471 AbstractCegarLoop]: Abstraction has 64254 states and 125954 transitions. [2024-11-09 19:56:24,964 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 107.66666666666667) internal successors, (323), 3 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:56:24,964 INFO L276 IsEmpty]: Start isEmpty. Operand 64254 states and 125954 transitions. [2024-11-09 19:56:24,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 512 [2024-11-09 19:56:24,976 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:56:24,976 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:56:24,976 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-09 19:56:24,977 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:56:24,977 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:56:24,977 INFO L85 PathProgramCache]: Analyzing trace with hash 1847420170, now seen corresponding path program 1 times [2024-11-09 19:56:24,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:56:24,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231378807] [2024-11-09 19:56:24,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:56:24,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:56:25,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:56:25,425 INFO L134 CoverageAnalysis]: Checked inductivity of 579 backedges. 347 proven. 0 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2024-11-09 19:56:25,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:56:25,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231378807] [2024-11-09 19:56:25,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231378807] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:56:25,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:56:25,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 19:56:25,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34723034] [2024-11-09 19:56:25,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:56:25,427 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 19:56:25,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:56:25,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 19:56:25,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:56:25,428 INFO L87 Difference]: Start difference. First operand 64254 states and 125954 transitions. Second operand has 4 states, 4 states have (on average 88.75) internal successors, (355), 4 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:56:29,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:56:29,168 INFO L93 Difference]: Finished difference Result 150307 states and 293881 transitions. [2024-11-09 19:56:29,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 19:56:29,168 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 88.75) internal successors, (355), 4 states have internal predecessors, (355), 0 states have call successors, (0), 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 511 [2024-11-09 19:56:29,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:56:29,277 INFO L225 Difference]: With dead ends: 150307 [2024-11-09 19:56:29,278 INFO L226 Difference]: Without dead ends: 85629 [2024-11-09 19:56:29,298 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:56:29,298 INFO L432 NwaCegarLoop]: 143 mSDtfsCounter, 1497 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 3756 mSolverCounterSat, 407 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1497 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 4163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 407 IncrementalHoareTripleChecker+Valid, 3756 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-11-09 19:56:29,298 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1497 Valid, 234 Invalid, 4163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [407 Valid, 3756 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-11-09 19:56:29,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85629 states. [2024-11-09 19:56:30,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85629 to 81785. [2024-11-09 19:56:30,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81785 states, 81784 states have (on average 1.9528880954709968) internal successors, (159715), 81784 states have internal predecessors, (159715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:56:31,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81785 states to 81785 states and 159715 transitions. [2024-11-09 19:56:31,091 INFO L78 Accepts]: Start accepts. Automaton has 81785 states and 159715 transitions. Word has length 511 [2024-11-09 19:56:31,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:56:31,092 INFO L471 AbstractCegarLoop]: Abstraction has 81785 states and 159715 transitions. [2024-11-09 19:56:31,092 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 88.75) internal successors, (355), 4 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:56:31,092 INFO L276 IsEmpty]: Start isEmpty. Operand 81785 states and 159715 transitions. [2024-11-09 19:56:31,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 516 [2024-11-09 19:56:31,105 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:56:31,106 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:56:31,106 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-09 19:56:31,106 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:56:31,106 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:56:31,107 INFO L85 PathProgramCache]: Analyzing trace with hash 588628154, now seen corresponding path program 1 times [2024-11-09 19:56:31,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:56:31,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914835007] [2024-11-09 19:56:31,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:56:31,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:56:31,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:56:31,553 INFO L134 CoverageAnalysis]: Checked inductivity of 616 backedges. 517 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2024-11-09 19:56:31,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:56:31,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914835007] [2024-11-09 19:56:31,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914835007] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:56:31,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:56:31,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:56:31,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926896954] [2024-11-09 19:56:31,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:56:31,554 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:56:31,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:56:31,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:56:31,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:56:31,556 INFO L87 Difference]: Start difference. First operand 81785 states and 159715 transitions. Second operand has 3 states, 3 states have (on average 139.33333333333334) internal successors, (418), 3 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) [2024-11-09 19:56:34,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:56:34,059 INFO L93 Difference]: Finished difference Result 190002 states and 371846 transitions. [2024-11-09 19:56:34,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:56:34,059 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 139.33333333333334) internal successors, (418), 3 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) Word has length 515 [2024-11-09 19:56:34,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:56:34,199 INFO L225 Difference]: With dead ends: 190002 [2024-11-09 19:56:34,200 INFO L226 Difference]: Without dead ends: 108645 [2024-11-09 19:56:34,252 INFO L431 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 [2024-11-09 19:56:34,252 INFO L432 NwaCegarLoop]: 253 mSDtfsCounter, 746 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 1920 mSolverCounterSat, 205 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 746 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 2125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 205 IncrementalHoareTripleChecker+Valid, 1920 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-09 19:56:34,253 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [746 Valid, 296 Invalid, 2125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [205 Valid, 1920 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-09 19:56:34,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108645 states. [2024-11-09 19:56:36,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108645 to 106932. [2024-11-09 19:56:36,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106932 states, 106931 states have (on average 1.949219590203028) internal successors, (208432), 106931 states have internal predecessors, (208432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:56:36,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106932 states to 106932 states and 208432 transitions. [2024-11-09 19:56:36,445 INFO L78 Accepts]: Start accepts. Automaton has 106932 states and 208432 transitions. Word has length 515 [2024-11-09 19:56:36,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:56:36,445 INFO L471 AbstractCegarLoop]: Abstraction has 106932 states and 208432 transitions. [2024-11-09 19:56:36,445 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 139.33333333333334) internal successors, (418), 3 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) [2024-11-09 19:56:36,445 INFO L276 IsEmpty]: Start isEmpty. Operand 106932 states and 208432 transitions. [2024-11-09 19:56:36,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 517 [2024-11-09 19:56:36,460 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:56:36,460 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:56:36,460 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-09 19:56:36,460 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:56:36,461 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:56:36,461 INFO L85 PathProgramCache]: Analyzing trace with hash 1294413219, now seen corresponding path program 1 times [2024-11-09 19:56:36,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:56:36,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660040617] [2024-11-09 19:56:36,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:56:36,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:56:36,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat