./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem17_label17.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_label17.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 ae22f3f06aabed24b98a90f87729aaa6479f5932deb24c738c216ff13229105f --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-09 19:51:35,621 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 19:51:35,700 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 19:51:35,704 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 19:51:35,705 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 19:51:35,730 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 19:51:35,733 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 19:51:35,733 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 19:51:35,734 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 19:51:35,735 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 19:51:35,735 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 19:51:35,736 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 19:51:35,736 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 19:51:35,737 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 19:51:35,739 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 19:51:35,739 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 19:51:35,739 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 19:51:35,740 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 19:51:35,740 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 19:51:35,740 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 19:51:35,741 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 19:51:35,745 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 19:51:35,746 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 19:51:35,746 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 19:51:35,746 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 19:51:35,747 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 19:51:35,747 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 19:51:35,747 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 19:51:35,747 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-09 19:51:35,748 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 19:51:35,748 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 19:51:35,748 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 19:51:35,748 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 19:51:35,748 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 19:51:35,749 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 19:51:35,749 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 19:51:35,749 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 19:51:35,750 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 19:51:35,751 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 19:51:35,751 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 19:51:35,751 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 19:51:35,751 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 19:51:35,752 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ae22f3f06aabed24b98a90f87729aaa6479f5932deb24c738c216ff13229105f [2024-11-09 19:51:36,033 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 19:51:36,055 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 19:51:36,059 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 19:51:36,060 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 19:51:36,061 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 19:51:36,062 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem17_label17.c [2024-11-09 19:51:37,451 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 19:51:37,815 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 19:51:37,817 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem17_label17.c [2024-11-09 19:51:37,845 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68ae16f62/70320815b5ad452ebb7802b198913e5e/FLAG89163589f [2024-11-09 19:51:37,861 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68ae16f62/70320815b5ad452ebb7802b198913e5e [2024-11-09 19:51:37,864 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 19:51:37,866 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 19:51:37,868 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 19:51:37,868 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 19:51:37,875 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 19:51:37,875 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:51:37" (1/1) ... [2024-11-09 19:51:37,876 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@689eec5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:51:37, skipping insertion in model container [2024-11-09 19:51:37,877 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 07:51:37" (1/1) ... [2024-11-09 19:51:37,968 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 19:51:38,226 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_label17.c[5781,5794] [2024-11-09 19:51:38,708 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 19:51:38,717 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 19:51:38,739 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_label17.c[5781,5794] [2024-11-09 19:51:39,033 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 19:51:39,052 INFO L204 MainTranslator]: Completed translation [2024-11-09 19:51:39,053 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:51:39 WrapperNode [2024-11-09 19:51:39,053 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 19:51:39,054 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 19:51:39,054 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 19:51:39,054 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 19:51:39,060 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:51:39" (1/1) ... [2024-11-09 19:51:39,101 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:51:39" (1/1) ... [2024-11-09 19:51:39,322 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 2612 [2024-11-09 19:51:39,322 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 19:51:39,323 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 19:51:39,323 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 19:51:39,323 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 19:51:39,333 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:51:39" (1/1) ... [2024-11-09 19:51:39,333 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:51:39" (1/1) ... [2024-11-09 19:51:39,361 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:51:39" (1/1) ... [2024-11-09 19:51:39,558 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 19:51:39,559 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:51:39" (1/1) ... [2024-11-09 19:51:39,559 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:51:39" (1/1) ... [2024-11-09 19:51:39,697 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:51:39" (1/1) ... [2024-11-09 19:51:39,710 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:51:39" (1/1) ... [2024-11-09 19:51:39,729 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:51:39" (1/1) ... [2024-11-09 19:51:39,745 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:51:39" (1/1) ... [2024-11-09 19:51:39,782 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 19:51:39,784 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-09 19:51:39,784 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-09 19:51:39,785 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-09 19:51:39,785 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:51:39" (1/1) ... [2024-11-09 19:51:39,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 19:51:39,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:51:39,819 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 19:51:39,822 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 19:51:39,862 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 19:51:39,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 19:51:39,863 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 19:51:39,863 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 19:51:39,932 INFO L256 CfgBuilder]: Building ICFG [2024-11-09 19:51:39,934 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 19:51:43,677 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L1653: havoc calculate_output_#t~ret7#1; [2024-11-09 19:51:43,887 INFO L? ?]: Removed 949 outVars from TransFormulas that were not future-live. [2024-11-09 19:51:43,887 INFO L307 CfgBuilder]: Performing block encoding [2024-11-09 19:51:43,922 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 19:51:43,923 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 19:51:43,927 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 07:51:43 BoogieIcfgContainer [2024-11-09 19:51:43,927 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-09 19:51:43,929 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 19:51:43,929 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 19:51:43,932 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 19:51:43,934 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 07:51:37" (1/3) ... [2024-11-09 19:51:43,935 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52a353fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:51:43, skipping insertion in model container [2024-11-09 19:51:43,936 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 07:51:39" (2/3) ... [2024-11-09 19:51:43,937 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52a353fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 07:51:43, skipping insertion in model container [2024-11-09 19:51:43,937 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 07:51:43" (3/3) ... [2024-11-09 19:51:43,938 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label17.c [2024-11-09 19:51:43,955 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 19:51:43,955 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 19:51:44,046 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 19:51:44,054 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;@4df0925a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 19:51:44,055 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 19:51:44,061 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 19:51:44,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-09 19:51:44,068 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:51:44,069 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:51:44,070 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:51:44,075 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:51:44,075 INFO L85 PathProgramCache]: Analyzing trace with hash 1774492872, now seen corresponding path program 1 times [2024-11-09 19:51:44,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:51:44,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902100685] [2024-11-09 19:51:44,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:51:44,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:51:44,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:51:44,434 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 19:51:44,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:51:44,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902100685] [2024-11-09 19:51:44,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902100685] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:51:44,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:51:44,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 19:51:44,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866558393] [2024-11-09 19:51:44,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:51:44,443 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:51:44,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:51:44,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:51:44,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:51:44,471 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 13.333333333333334) internal successors, (40), 2 states have internal predecessors, (40), 0 states have call successors, (0), 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 19:51:47,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:51:47,346 INFO L93 Difference]: Finished difference Result 1648 states and 4104 transitions. [2024-11-09 19:51:47,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:51:47,348 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 2 states have internal predecessors, (40), 0 states have call successors, (0), 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 40 [2024-11-09 19:51:47,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:51:47,397 INFO L225 Difference]: With dead ends: 1648 [2024-11-09 19:51:47,397 INFO L226 Difference]: Without dead ends: 978 [2024-11-09 19:51:47,404 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 19:51:47,413 INFO L432 NwaCegarLoop]: 478 mSDtfsCounter, 810 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 2129 mSolverCounterSat, 372 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 810 SdHoareTripleChecker+Valid, 556 SdHoareTripleChecker+Invalid, 2501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 372 IncrementalHoareTripleChecker+Valid, 2129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-09 19:51:47,414 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [810 Valid, 556 Invalid, 2501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [372 Valid, 2129 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-09 19:51:47,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 978 states. [2024-11-09 19:51:47,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 978 to 975. [2024-11-09 19:51:47,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 975 states, 974 states have (on average 2.2412731006160165) internal successors, (2183), 974 states have internal predecessors, (2183), 0 states have call successors, (0), 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 19:51:47,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 975 states to 975 states and 2183 transitions. [2024-11-09 19:51:47,544 INFO L78 Accepts]: Start accepts. Automaton has 975 states and 2183 transitions. Word has length 40 [2024-11-09 19:51:47,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:51:47,545 INFO L471 AbstractCegarLoop]: Abstraction has 975 states and 2183 transitions. [2024-11-09 19:51:47,545 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 2 states have internal predecessors, (40), 0 states have call successors, (0), 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 19:51:47,546 INFO L276 IsEmpty]: Start isEmpty. Operand 975 states and 2183 transitions. [2024-11-09 19:51:47,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-09 19:51:47,550 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:51:47,551 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-09 19:51:47,551 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 19:51:47,552 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:51:47,553 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:51:47,553 INFO L85 PathProgramCache]: Analyzing trace with hash 2128693180, now seen corresponding path program 1 times [2024-11-09 19:51:47,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:51:47,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774010469] [2024-11-09 19:51:47,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:51:47,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:51:47,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:51:48,062 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:51:48,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:51:48,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774010469] [2024-11-09 19:51:48,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774010469] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:51:48,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:51:48,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:51:48,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418683699] [2024-11-09 19:51:48,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:51:48,067 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 19:51:48,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:51:48,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 19:51:48,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:51:48,071 INFO L87 Difference]: Start difference. First operand 975 states and 2183 transitions. Second operand has 4 states, 4 states have (on average 27.75) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:51:52,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:51:52,497 INFO L93 Difference]: Finished difference Result 3745 states and 8528 transitions. [2024-11-09 19:51:52,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 19:51:52,497 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2024-11-09 19:51:52,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:51:52,509 INFO L225 Difference]: With dead ends: 3745 [2024-11-09 19:51:52,509 INFO L226 Difference]: Without dead ends: 2772 [2024-11-09 19:51:52,511 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 19:51:52,512 INFO L432 NwaCegarLoop]: 188 mSDtfsCounter, 1638 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 3979 mSolverCounterSat, 785 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1638 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 4764 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 785 IncrementalHoareTripleChecker+Valid, 3979 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2024-11-09 19:51:52,512 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1638 Valid, 276 Invalid, 4764 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [785 Valid, 3979 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2024-11-09 19:51:52,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2772 states. [2024-11-09 19:51:52,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2772 to 2731. [2024-11-09 19:51:52,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2731 states, 2730 states have (on average 2.18021978021978) internal successors, (5952), 2730 states have internal predecessors, (5952), 0 states have call successors, (0), 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 19:51:52,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2731 states to 2731 states and 5952 transitions. [2024-11-09 19:51:52,567 INFO L78 Accepts]: Start accepts. Automaton has 2731 states and 5952 transitions. Word has length 111 [2024-11-09 19:51:52,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:51:52,569 INFO L471 AbstractCegarLoop]: Abstraction has 2731 states and 5952 transitions. [2024-11-09 19:51:52,569 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:51:52,570 INFO L276 IsEmpty]: Start isEmpty. Operand 2731 states and 5952 transitions. [2024-11-09 19:51:52,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-11-09 19:51:52,577 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:51:52,577 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-09 19:51:52,578 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 19:51:52,578 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:51:52,578 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:51:52,578 INFO L85 PathProgramCache]: Analyzing trace with hash 1397366002, now seen corresponding path program 1 times [2024-11-09 19:51:52,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:51:52,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443507269] [2024-11-09 19:51:52,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:51:52,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:51:52,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:51:52,947 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:51:52,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:51:52,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443507269] [2024-11-09 19:51:52,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443507269] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:51:52,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:51:52,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 19:51:52,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576812110] [2024-11-09 19:51:52,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:51:52,950 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:51:52,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:51:52,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:51:52,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:51:52,953 INFO L87 Difference]: Start difference. First operand 2731 states and 5952 transitions. Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 2 states have internal predecessors, (146), 0 states have call successors, (0), 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 19:51:55,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:51:55,397 INFO L93 Difference]: Finished difference Result 6341 states and 13862 transitions. [2024-11-09 19:51:55,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:51:55,398 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 2 states have internal predecessors, (146), 0 states have call successors, (0), 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 146 [2024-11-09 19:51:55,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:51:55,412 INFO L225 Difference]: With dead ends: 6341 [2024-11-09 19:51:55,412 INFO L226 Difference]: Without dead ends: 3612 [2024-11-09 19:51:55,416 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 19:51:55,417 INFO L432 NwaCegarLoop]: 477 mSDtfsCounter, 710 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 2381 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 710 SdHoareTripleChecker+Valid, 541 SdHoareTripleChecker+Invalid, 2479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 2381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-09 19:51:55,418 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [710 Valid, 541 Invalid, 2479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 2381 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-09 19:51:55,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3612 states. [2024-11-09 19:51:55,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3612 to 3592. [2024-11-09 19:51:55,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3592 states, 3591 states have (on average 2.157059314954052) internal successors, (7746), 3591 states have internal predecessors, (7746), 0 states have call successors, (0), 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 19:51:55,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3592 states to 3592 states and 7746 transitions. [2024-11-09 19:51:55,521 INFO L78 Accepts]: Start accepts. Automaton has 3592 states and 7746 transitions. Word has length 146 [2024-11-09 19:51:55,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:51:55,521 INFO L471 AbstractCegarLoop]: Abstraction has 3592 states and 7746 transitions. [2024-11-09 19:51:55,522 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 2 states have internal predecessors, (146), 0 states have call successors, (0), 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 19:51:55,522 INFO L276 IsEmpty]: Start isEmpty. Operand 3592 states and 7746 transitions. [2024-11-09 19:51:55,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2024-11-09 19:51:55,524 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:51:55,524 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-09 19:51:55,524 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 19:51:55,524 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:51:55,525 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:51:55,525 INFO L85 PathProgramCache]: Analyzing trace with hash 1946981984, now seen corresponding path program 1 times [2024-11-09 19:51:55,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:51:55,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284149244] [2024-11-09 19:51:55,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:51:55,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:51:55,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:51:55,924 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:51:55,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:51:55,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284149244] [2024-11-09 19:51:55,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284149244] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:51:55,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:51:55,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:51:55,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725766570] [2024-11-09 19:51:55,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:51:55,928 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 19:51:55,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:51:55,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 19:51:55,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:51:55,929 INFO L87 Difference]: Start difference. First operand 3592 states and 7746 transitions. Second operand has 4 states, 4 states have (on average 38.0) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 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 19:51:58,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:51:58,710 INFO L93 Difference]: Finished difference Result 6747 states and 14516 transitions. [2024-11-09 19:51:58,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 19:51:58,710 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 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 152 [2024-11-09 19:51:58,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:51:58,721 INFO L225 Difference]: With dead ends: 6747 [2024-11-09 19:51:58,722 INFO L226 Difference]: Without dead ends: 3157 [2024-11-09 19:51:58,725 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 19:51:58,726 INFO L432 NwaCegarLoop]: 513 mSDtfsCounter, 888 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 3029 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 888 SdHoareTripleChecker+Valid, 861 SdHoareTripleChecker+Invalid, 3058 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 3029 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-09 19:51:58,727 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [888 Valid, 861 Invalid, 3058 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 3029 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-09 19:51:58,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3157 states. [2024-11-09 19:51:58,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3157 to 3157. [2024-11-09 19:51:58,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3157 states, 3156 states have (on average 2.1362484157160964) internal successors, (6742), 3156 states have internal predecessors, (6742), 0 states have call successors, (0), 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 19:51:58,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3157 states to 3157 states and 6742 transitions. [2024-11-09 19:51:58,779 INFO L78 Accepts]: Start accepts. Automaton has 3157 states and 6742 transitions. Word has length 152 [2024-11-09 19:51:58,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:51:58,779 INFO L471 AbstractCegarLoop]: Abstraction has 3157 states and 6742 transitions. [2024-11-09 19:51:58,780 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 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 19:51:58,780 INFO L276 IsEmpty]: Start isEmpty. Operand 3157 states and 6742 transitions. [2024-11-09 19:51:58,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2024-11-09 19:51:58,782 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:51:58,782 INFO L215 NwaCegarLoop]: trace histogram [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, 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 19:51:58,782 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 19:51:58,782 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:51:58,783 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:51:58,783 INFO L85 PathProgramCache]: Analyzing trace with hash 2092742035, now seen corresponding path program 1 times [2024-11-09 19:51:58,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:51:58,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808939747] [2024-11-09 19:51:58,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:51:58,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:51:58,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:51:58,959 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-09 19:51:58,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:51:58,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808939747] [2024-11-09 19:51:58,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808939747] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:51:58,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:51:58,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 19:51:58,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977469562] [2024-11-09 19:51:58,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:51:58,963 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:51:58,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:51:58,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:51:58,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:51:58,964 INFO L87 Difference]: Start difference. First operand 3157 states and 6742 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 2 states have internal predecessors, (114), 0 states have call successors, (0), 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 19:52:01,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:52:01,102 INFO L93 Difference]: Finished difference Result 8455 states and 18412 transitions. [2024-11-09 19:52:01,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:52:01,103 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 2 states have internal predecessors, (114), 0 states have call successors, (0), 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 183 [2024-11-09 19:52:01,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:52:01,116 INFO L225 Difference]: With dead ends: 8455 [2024-11-09 19:52:01,116 INFO L226 Difference]: Without dead ends: 4865 [2024-11-09 19:52:01,120 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 19:52:01,123 INFO L432 NwaCegarLoop]: 515 mSDtfsCounter, 745 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 1797 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 745 SdHoareTripleChecker+Valid, 591 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 19:52:01,125 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [745 Valid, 591 Invalid, 2345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 1797 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-09 19:52:01,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4865 states. [2024-11-09 19:52:01,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4865 to 4011. [2024-11-09 19:52:01,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4011 states, 4010 states have (on average 2.0306733167082296) internal successors, (8143), 4010 states have internal predecessors, (8143), 0 states have call successors, (0), 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 19:52:01,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4011 states to 4011 states and 8143 transitions. [2024-11-09 19:52:01,193 INFO L78 Accepts]: Start accepts. Automaton has 4011 states and 8143 transitions. Word has length 183 [2024-11-09 19:52:01,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:52:01,194 INFO L471 AbstractCegarLoop]: Abstraction has 4011 states and 8143 transitions. [2024-11-09 19:52:01,194 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 2 states have internal predecessors, (114), 0 states have call successors, (0), 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 19:52:01,194 INFO L276 IsEmpty]: Start isEmpty. Operand 4011 states and 8143 transitions. [2024-11-09 19:52:01,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2024-11-09 19:52:01,196 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:52:01,197 INFO L215 NwaCegarLoop]: trace histogram [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, 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 19:52:01,197 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 19:52:01,197 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:52:01,198 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:52:01,198 INFO L85 PathProgramCache]: Analyzing trace with hash 1828916336, now seen corresponding path program 1 times [2024-11-09 19:52:01,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:52:01,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052944126] [2024-11-09 19:52:01,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:52:01,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:52:01,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:52:01,348 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2024-11-09 19:52:01,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:52:01,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052944126] [2024-11-09 19:52:01,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052944126] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:52:01,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:52:01,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:52:01,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301158498] [2024-11-09 19:52:01,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:52:01,351 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:52:01,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:52:01,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:52:01,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:52:01,352 INFO L87 Difference]: Start difference. First operand 4011 states and 8143 transitions. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:52:03,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:52:03,580 INFO L93 Difference]: Finished difference Result 10150 states and 20888 transitions. [2024-11-09 19:52:03,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:52:03,582 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 196 [2024-11-09 19:52:03,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:52:03,613 INFO L225 Difference]: With dead ends: 10150 [2024-11-09 19:52:03,613 INFO L226 Difference]: Without dead ends: 6141 [2024-11-09 19:52:03,621 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 19:52:03,624 INFO L432 NwaCegarLoop]: 416 mSDtfsCounter, 780 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 1990 mSolverCounterSat, 318 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 780 SdHoareTripleChecker+Valid, 482 SdHoareTripleChecker+Invalid, 2308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 318 IncrementalHoareTripleChecker+Valid, 1990 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-09 19:52:03,625 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [780 Valid, 482 Invalid, 2308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [318 Valid, 1990 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-09 19:52:03,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6141 states. [2024-11-09 19:52:03,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6141 to 3988. [2024-11-09 19:52:03,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3988 states, 3987 states have (on average 2.033609229997492) internal successors, (8108), 3987 states have internal predecessors, (8108), 0 states have call successors, (0), 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 19:52:03,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3988 states to 3988 states and 8108 transitions. [2024-11-09 19:52:03,702 INFO L78 Accepts]: Start accepts. Automaton has 3988 states and 8108 transitions. Word has length 196 [2024-11-09 19:52:03,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:52:03,703 INFO L471 AbstractCegarLoop]: Abstraction has 3988 states and 8108 transitions. [2024-11-09 19:52:03,703 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 19:52:03,703 INFO L276 IsEmpty]: Start isEmpty. Operand 3988 states and 8108 transitions. [2024-11-09 19:52:03,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2024-11-09 19:52:03,705 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:52:03,706 INFO L215 NwaCegarLoop]: trace histogram [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, 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] [2024-11-09 19:52:03,706 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 19:52:03,706 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:52:03,706 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:52:03,707 INFO L85 PathProgramCache]: Analyzing trace with hash -174920185, now seen corresponding path program 1 times [2024-11-09 19:52:03,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:52:03,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397183244] [2024-11-09 19:52:03,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:52:03,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:52:03,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:52:04,021 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 149 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 19:52:04,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:52:04,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397183244] [2024-11-09 19:52:04,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397183244] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:52:04,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:52:04,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 19:52:04,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205818365] [2024-11-09 19:52:04,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:52:04,023 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 19:52:04,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:52:04,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 19:52:04,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 19:52:04,024 INFO L87 Difference]: Start difference. First operand 3988 states and 8108 transitions. Second operand has 5 states, 5 states have (on average 40.6) internal successors, (203), 5 states have internal predecessors, (203), 0 states have call successors, (0), 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 19:52:06,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:52:06,574 INFO L93 Difference]: Finished difference Result 10551 states and 21771 transitions. [2024-11-09 19:52:06,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 19:52:06,574 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 40.6) internal successors, (203), 5 states have internal predecessors, (203), 0 states have call successors, (0), 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 203 [2024-11-09 19:52:06,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:52:06,585 INFO L225 Difference]: With dead ends: 10551 [2024-11-09 19:52:06,585 INFO L226 Difference]: Without dead ends: 6565 [2024-11-09 19:52:06,588 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 19:52:06,589 INFO L432 NwaCegarLoop]: 1099 mSDtfsCounter, 1869 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 2789 mSolverCounterSat, 700 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1869 SdHoareTripleChecker+Valid, 1189 SdHoareTripleChecker+Invalid, 3489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 700 IncrementalHoareTripleChecker+Valid, 2789 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-09 19:52:06,589 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1869 Valid, 1189 Invalid, 3489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [700 Valid, 2789 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-09 19:52:06,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6565 states. [2024-11-09 19:52:06,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6565 to 6551. [2024-11-09 19:52:06,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6551 states, 6550 states have (on average 2.0251908396946563) internal successors, (13265), 6550 states have internal predecessors, (13265), 0 states have call successors, (0), 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 19:52:06,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6551 states to 6551 states and 13265 transitions. [2024-11-09 19:52:06,680 INFO L78 Accepts]: Start accepts. Automaton has 6551 states and 13265 transitions. Word has length 203 [2024-11-09 19:52:06,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:52:06,680 INFO L471 AbstractCegarLoop]: Abstraction has 6551 states and 13265 transitions. [2024-11-09 19:52:06,681 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 40.6) internal successors, (203), 5 states have internal predecessors, (203), 0 states have call successors, (0), 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 19:52:06,681 INFO L276 IsEmpty]: Start isEmpty. Operand 6551 states and 13265 transitions. [2024-11-09 19:52:06,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2024-11-09 19:52:06,684 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:52:06,685 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-09 19:52:06,685 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 19:52:06,685 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:52:06,685 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:52:06,686 INFO L85 PathProgramCache]: Analyzing trace with hash -816403692, now seen corresponding path program 1 times [2024-11-09 19:52:06,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:52:06,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306519590] [2024-11-09 19:52:06,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:52:06,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:52:06,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:52:07,081 INFO L134 CoverageAnalysis]: Checked inductivity of 322 backedges. 214 proven. 71 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-11-09 19:52:07,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:52:07,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306519590] [2024-11-09 19:52:07,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306519590] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 19:52:07,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1187098474] [2024-11-09 19:52:07,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:52:07,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:52:07,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:52:07,085 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 19:52:07,086 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 19:52:07,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:52:07,251 INFO L255 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 19:52:07,264 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 19:52:07,534 INFO L134 CoverageAnalysis]: Checked inductivity of 322 backedges. 214 proven. 71 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-11-09 19:52:07,535 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 19:52:07,822 INFO L134 CoverageAnalysis]: Checked inductivity of 322 backedges. 285 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-11-09 19:52:07,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1187098474] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 19:52:07,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 19:52:07,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2024-11-09 19:52:07,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392315233] [2024-11-09 19:52:07,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:52:07,823 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 19:52:07,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:52:07,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 19:52:07,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-09 19:52:07,824 INFO L87 Difference]: Start difference. First operand 6551 states and 13265 transitions. Second operand has 4 states, 4 states have (on average 57.75) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 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 19:52:11,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:52:11,487 INFO L93 Difference]: Finished difference Result 21234 states and 43454 transitions. [2024-11-09 19:52:11,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 19:52:11,487 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 57.75) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 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 267 [2024-11-09 19:52:11,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:52:11,514 INFO L225 Difference]: With dead ends: 21234 [2024-11-09 19:52:11,514 INFO L226 Difference]: Without dead ends: 14252 [2024-11-09 19:52:11,522 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 535 GetRequests, 531 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 19:52:11,523 INFO L432 NwaCegarLoop]: 89 mSDtfsCounter, 1606 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 3698 mSolverCounterSat, 734 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1606 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 4432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 734 IncrementalHoareTripleChecker+Valid, 3698 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2024-11-09 19:52:11,523 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1606 Valid, 168 Invalid, 4432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [734 Valid, 3698 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2024-11-09 19:52:11,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14252 states. [2024-11-09 19:52:11,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14252 to 14250. [2024-11-09 19:52:11,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14250 states, 14249 states have (on average 2.0261070952347535) internal successors, (28870), 14249 states have internal predecessors, (28870), 0 states have call successors, (0), 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 19:52:11,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14250 states to 14250 states and 28870 transitions. [2024-11-09 19:52:11,735 INFO L78 Accepts]: Start accepts. Automaton has 14250 states and 28870 transitions. Word has length 267 [2024-11-09 19:52:11,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:52:11,736 INFO L471 AbstractCegarLoop]: Abstraction has 14250 states and 28870 transitions. [2024-11-09 19:52:11,736 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.75) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 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 19:52:11,736 INFO L276 IsEmpty]: Start isEmpty. Operand 14250 states and 28870 transitions. [2024-11-09 19:52:11,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2024-11-09 19:52:11,740 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:52:11,740 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:52:11,758 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-09 19:52:11,940 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:52:11,941 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:52:11,942 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:52:11,942 INFO L85 PathProgramCache]: Analyzing trace with hash 395806580, now seen corresponding path program 1 times [2024-11-09 19:52:11,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:52:11,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801506201] [2024-11-09 19:52:11,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:52:11,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:52:12,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:52:12,101 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2024-11-09 19:52:12,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:52:12,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801506201] [2024-11-09 19:52:12,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801506201] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:52:12,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:52:12,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:52:12,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746966819] [2024-11-09 19:52:12,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:52:12,103 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:52:12,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:52:12,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:52:12,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:52:12,105 INFO L87 Difference]: Start difference. First operand 14250 states and 28870 transitions. Second operand has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 0 states have call successors, (0), 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 19:52:14,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:52:14,494 INFO L93 Difference]: Finished difference Result 32761 states and 66327 transitions. [2024-11-09 19:52:14,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:52:14,494 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 0 states have call successors, (0), 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 280 [2024-11-09 19:52:14,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:52:14,528 INFO L225 Difference]: With dead ends: 32761 [2024-11-09 19:52:14,528 INFO L226 Difference]: Without dead ends: 18078 [2024-11-09 19:52:14,541 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 19:52:14,544 INFO L432 NwaCegarLoop]: 361 mSDtfsCounter, 804 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 1990 mSolverCounterSat, 303 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 804 SdHoareTripleChecker+Valid, 414 SdHoareTripleChecker+Invalid, 2293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 303 IncrementalHoareTripleChecker+Valid, 1990 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-09 19:52:14,544 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [804 Valid, 414 Invalid, 2293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [303 Valid, 1990 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-09 19:52:14,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18078 states. [2024-11-09 19:52:14,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18078 to 16793. [2024-11-09 19:52:14,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16793 states, 16792 states have (on average 2.006133873272987) internal successors, (33687), 16792 states have internal predecessors, (33687), 0 states have call successors, (0), 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 19:52:14,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16793 states to 16793 states and 33687 transitions. [2024-11-09 19:52:14,760 INFO L78 Accepts]: Start accepts. Automaton has 16793 states and 33687 transitions. Word has length 280 [2024-11-09 19:52:14,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:52:14,761 INFO L471 AbstractCegarLoop]: Abstraction has 16793 states and 33687 transitions. [2024-11-09 19:52:14,761 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 0 states have call successors, (0), 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 19:52:14,761 INFO L276 IsEmpty]: Start isEmpty. Operand 16793 states and 33687 transitions. [2024-11-09 19:52:14,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2024-11-09 19:52:14,765 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:52:14,765 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:52:14,766 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-09 19:52:14,766 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:52:14,766 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:52:14,766 INFO L85 PathProgramCache]: Analyzing trace with hash 1079358778, now seen corresponding path program 1 times [2024-11-09 19:52:14,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:52:14,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633260986] [2024-11-09 19:52:14,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:52:14,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:52:14,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:52:14,990 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 255 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-11-09 19:52:14,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:52:14,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633260986] [2024-11-09 19:52:14,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633260986] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:52:14,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:52:14,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:52:14,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49073319] [2024-11-09 19:52:14,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:52:14,991 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:52:14,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:52:14,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:52:14,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:52:14,992 INFO L87 Difference]: Start difference. First operand 16793 states and 33687 transitions. Second operand has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 3 states have internal predecessors, (199), 0 states have call successors, (0), 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 19:52:17,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:52:17,036 INFO L93 Difference]: Finished difference Result 36568 states and 73543 transitions. [2024-11-09 19:52:17,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:52:17,037 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 3 states have internal predecessors, (199), 0 states have call successors, (0), 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 280 [2024-11-09 19:52:17,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:52:17,067 INFO L225 Difference]: With dead ends: 36568 [2024-11-09 19:52:17,067 INFO L226 Difference]: Without dead ends: 19350 [2024-11-09 19:52:17,085 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 19:52:17,085 INFO L432 NwaCegarLoop]: 1167 mSDtfsCounter, 730 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 1927 mSolverCounterSat, 213 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 730 SdHoareTripleChecker+Valid, 1236 SdHoareTripleChecker+Invalid, 2140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 213 IncrementalHoareTripleChecker+Valid, 1927 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-09 19:52:17,087 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [730 Valid, 1236 Invalid, 2140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [213 Valid, 1927 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-09 19:52:17,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19350 states. [2024-11-09 19:52:17,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19350 to 19350. [2024-11-09 19:52:17,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19350 states, 19349 states have (on average 1.98563233242028) internal successors, (38420), 19349 states have internal predecessors, (38420), 0 states have call successors, (0), 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 19:52:17,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19350 states to 19350 states and 38420 transitions. [2024-11-09 19:52:17,325 INFO L78 Accepts]: Start accepts. Automaton has 19350 states and 38420 transitions. Word has length 280 [2024-11-09 19:52:17,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:52:17,325 INFO L471 AbstractCegarLoop]: Abstraction has 19350 states and 38420 transitions. [2024-11-09 19:52:17,326 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 3 states have internal predecessors, (199), 0 states have call successors, (0), 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 19:52:17,326 INFO L276 IsEmpty]: Start isEmpty. Operand 19350 states and 38420 transitions. [2024-11-09 19:52:17,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2024-11-09 19:52:17,330 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:52:17,331 INFO L215 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:52:17,331 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-09 19:52:17,331 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:52:17,332 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:52:17,332 INFO L85 PathProgramCache]: Analyzing trace with hash 1335892874, now seen corresponding path program 1 times [2024-11-09 19:52:17,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:52:17,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547511763] [2024-11-09 19:52:17,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:52:17,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:52:17,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:52:17,665 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2024-11-09 19:52:17,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:52:17,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547511763] [2024-11-09 19:52:17,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547511763] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:52:17,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:52:17,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:52:17,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516426951] [2024-11-09 19:52:17,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:52:17,667 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:52:17,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:52:17,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:52:17,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:52:17,668 INFO L87 Difference]: Start difference. First operand 19350 states and 38420 transitions. Second operand has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 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 19:52:19,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:52:19,917 INFO L93 Difference]: Finished difference Result 51058 states and 100951 transitions. [2024-11-09 19:52:19,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:52:19,917 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 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 319 [2024-11-09 19:52:19,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:52:19,968 INFO L225 Difference]: With dead ends: 51058 [2024-11-09 19:52:19,969 INFO L226 Difference]: Without dead ends: 31278 [2024-11-09 19:52:19,988 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 19:52:19,989 INFO L432 NwaCegarLoop]: 329 mSDtfsCounter, 790 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 1933 mSolverCounterSat, 234 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 790 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 2167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 234 IncrementalHoareTripleChecker+Valid, 1933 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-09 19:52:19,989 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [790 Valid, 384 Invalid, 2167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [234 Valid, 1933 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-09 19:52:20,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31278 states. [2024-11-09 19:52:20,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31278 to 29144. [2024-11-09 19:52:20,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29144 states, 29143 states have (on average 1.9539512061215387) internal successors, (56944), 29143 states have internal predecessors, (56944), 0 states have call successors, (0), 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 19:52:20,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29144 states to 29144 states and 56944 transitions. [2024-11-09 19:52:20,564 INFO L78 Accepts]: Start accepts. Automaton has 29144 states and 56944 transitions. Word has length 319 [2024-11-09 19:52:20,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:52:20,564 INFO L471 AbstractCegarLoop]: Abstraction has 29144 states and 56944 transitions. [2024-11-09 19:52:20,564 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 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 19:52:20,565 INFO L276 IsEmpty]: Start isEmpty. Operand 29144 states and 56944 transitions. [2024-11-09 19:52:20,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2024-11-09 19:52:20,573 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:52:20,573 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 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] [2024-11-09 19:52:20,574 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-09 19:52:20,574 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:52:20,574 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:52:20,575 INFO L85 PathProgramCache]: Analyzing trace with hash 766707401, now seen corresponding path program 1 times [2024-11-09 19:52:20,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:52:20,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649816986] [2024-11-09 19:52:20,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:52:20,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:52:20,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:52:20,812 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 268 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2024-11-09 19:52:20,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:52:20,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649816986] [2024-11-09 19:52:20,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649816986] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:52:20,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:52:20,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:52:20,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45248847] [2024-11-09 19:52:20,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:52:20,815 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:52:20,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:52:20,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:52:20,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:52:20,816 INFO L87 Difference]: Start difference. First operand 29144 states and 56944 transitions. Second operand has 3 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 0 states have call successors, (0), 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 19:52:22,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:52:22,993 INFO L93 Difference]: Finished difference Result 69373 states and 135838 transitions. [2024-11-09 19:52:22,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:52:22,994 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 0 states have call successors, (0), 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 333 [2024-11-09 19:52:22,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:52:23,046 INFO L225 Difference]: With dead ends: 69373 [2024-11-09 19:52:23,047 INFO L226 Difference]: Without dead ends: 38951 [2024-11-09 19:52:23,059 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 19:52:23,061 INFO L432 NwaCegarLoop]: 1058 mSDtfsCounter, 701 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 1861 mSolverCounterSat, 246 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 701 SdHoareTripleChecker+Valid, 1113 SdHoareTripleChecker+Invalid, 2107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 246 IncrementalHoareTripleChecker+Valid, 1861 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-09 19:52:23,061 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [701 Valid, 1113 Invalid, 2107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [246 Valid, 1861 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-09 19:52:23,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38951 states. [2024-11-09 19:52:23,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38951 to 37671. [2024-11-09 19:52:23,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37671 states, 37670 states have (on average 1.9380143350146004) internal successors, (73005), 37670 states have internal predecessors, (73005), 0 states have call successors, (0), 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 19:52:23,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37671 states to 37671 states and 73005 transitions. [2024-11-09 19:52:23,590 INFO L78 Accepts]: Start accepts. Automaton has 37671 states and 73005 transitions. Word has length 333 [2024-11-09 19:52:23,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:52:23,591 INFO L471 AbstractCegarLoop]: Abstraction has 37671 states and 73005 transitions. [2024-11-09 19:52:23,591 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 0 states have call successors, (0), 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 19:52:23,591 INFO L276 IsEmpty]: Start isEmpty. Operand 37671 states and 73005 transitions. [2024-11-09 19:52:23,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2024-11-09 19:52:23,596 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:52:23,596 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 19:52:23,596 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-09 19:52:23,597 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:52:23,597 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:52:23,597 INFO L85 PathProgramCache]: Analyzing trace with hash 1240966510, now seen corresponding path program 1 times [2024-11-09 19:52:23,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:52:23,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622133743] [2024-11-09 19:52:23,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:52:23,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:52:23,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:52:24,262 INFO L134 CoverageAnalysis]: Checked inductivity of 576 backedges. 357 proven. 74 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-09 19:52:24,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:52:24,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622133743] [2024-11-09 19:52:24,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622133743] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 19:52:24,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [705768027] [2024-11-09 19:52:24,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:52:24,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 19:52:24,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 19:52:24,265 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 19:52:24,266 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 19:52:24,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:52:24,449 INFO L255 TraceCheckSpWp]: Trace formula consists of 489 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 19:52:24,460 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 19:52:24,658 INFO L134 CoverageAnalysis]: Checked inductivity of 576 backedges. 357 proven. 74 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-09 19:52:24,658 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 19:52:24,921 INFO L134 CoverageAnalysis]: Checked inductivity of 576 backedges. 431 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-09 19:52:24,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [705768027] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 19:52:24,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 19:52:24,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2024-11-09 19:52:24,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430847122] [2024-11-09 19:52:24,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:52:24,923 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 19:52:24,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:52:24,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 19:52:24,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-09 19:52:24,925 INFO L87 Difference]: Start difference. First operand 37671 states and 73005 transitions. Second operand has 4 states, 4 states have (on average 59.0) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 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 19:52:28,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:52:28,632 INFO L93 Difference]: Finished difference Result 89434 states and 173561 transitions. [2024-11-09 19:52:28,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 19:52:28,633 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 59.0) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 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 342 [2024-11-09 19:52:28,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:52:28,706 INFO L225 Difference]: With dead ends: 89434 [2024-11-09 19:52:28,706 INFO L226 Difference]: Without dead ends: 51337 [2024-11-09 19:52:28,732 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 685 GetRequests, 681 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 19:52:28,733 INFO L432 NwaCegarLoop]: 85 mSDtfsCounter, 1550 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 3725 mSolverCounterSat, 455 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1550 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 4180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 455 IncrementalHoareTripleChecker+Valid, 3725 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-11-09 19:52:28,734 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1550 Valid, 193 Invalid, 4180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [455 Valid, 3725 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-11-09 19:52:28,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51337 states. [2024-11-09 19:52:29,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51337 to 48779. [2024-11-09 19:52:29,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48779 states, 48778 states have (on average 1.9442166550494075) internal successors, (94835), 48778 states have internal predecessors, (94835), 0 states have call successors, (0), 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 19:52:29,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48779 states to 48779 states and 94835 transitions. [2024-11-09 19:52:29,668 INFO L78 Accepts]: Start accepts. Automaton has 48779 states and 94835 transitions. Word has length 342 [2024-11-09 19:52:29,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:52:29,670 INFO L471 AbstractCegarLoop]: Abstraction has 48779 states and 94835 transitions. [2024-11-09 19:52:29,670 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.0) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 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 19:52:29,670 INFO L276 IsEmpty]: Start isEmpty. Operand 48779 states and 94835 transitions. [2024-11-09 19:52:29,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 441 [2024-11-09 19:52:29,690 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:52:29,692 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 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] [2024-11-09 19:52:29,710 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 19:52:29,895 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,SelfDestructingSolverStorable12 [2024-11-09 19:52:29,896 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:52:29,896 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:52:29,897 INFO L85 PathProgramCache]: Analyzing trace with hash 1447663310, now seen corresponding path program 1 times [2024-11-09 19:52:29,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:52:29,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462518958] [2024-11-09 19:52:29,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:52:29,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:52:30,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:52:30,484 INFO L134 CoverageAnalysis]: Checked inductivity of 660 backedges. 147 proven. 0 refuted. 0 times theorem prover too weak. 513 trivial. 0 not checked. [2024-11-09 19:52:30,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:52:30,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462518958] [2024-11-09 19:52:30,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462518958] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:52:30,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:52:30,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:52:30,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549962661] [2024-11-09 19:52:30,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:52:30,487 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:52:30,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:52:30,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:52:30,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:52:30,488 INFO L87 Difference]: Start difference. First operand 48779 states and 94835 transitions. Second operand has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 0 states have call successors, (0), 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 19:52:32,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:52:32,879 INFO L93 Difference]: Finished difference Result 117643 states and 228364 transitions. [2024-11-09 19:52:32,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:52:32,880 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 0 states have call successors, (0), 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 440 [2024-11-09 19:52:32,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:52:32,982 INFO L225 Difference]: With dead ends: 117643 [2024-11-09 19:52:32,982 INFO L226 Difference]: Without dead ends: 68439 [2024-11-09 19:52:33,013 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 19:52:33,014 INFO L432 NwaCegarLoop]: 254 mSDtfsCounter, 810 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 2034 mSolverCounterSat, 181 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 810 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 2215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 181 IncrementalHoareTripleChecker+Valid, 2034 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-09 19:52:33,014 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [810 Valid, 305 Invalid, 2215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [181 Valid, 2034 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-09 19:52:33,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68439 states. [2024-11-09 19:52:33,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68439 to 67126. [2024-11-09 19:52:34,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67126 states, 67125 states have (on average 1.936491620111732) internal successors, (129987), 67125 states have internal predecessors, (129987), 0 states have call successors, (0), 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 19:52:34,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67126 states to 67126 states and 129987 transitions. [2024-11-09 19:52:34,382 INFO L78 Accepts]: Start accepts. Automaton has 67126 states and 129987 transitions. Word has length 440 [2024-11-09 19:52:34,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:52:34,383 INFO L471 AbstractCegarLoop]: Abstraction has 67126 states and 129987 transitions. [2024-11-09 19:52:34,383 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 0 states have call successors, (0), 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 19:52:34,383 INFO L276 IsEmpty]: Start isEmpty. Operand 67126 states and 129987 transitions. [2024-11-09 19:52:34,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 469 [2024-11-09 19:52:34,392 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:52:34,392 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 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] [2024-11-09 19:52:34,393 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-09 19:52:34,393 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:52:34,393 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:52:34,393 INFO L85 PathProgramCache]: Analyzing trace with hash -62226861, now seen corresponding path program 1 times [2024-11-09 19:52:34,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:52:34,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503300333] [2024-11-09 19:52:34,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:52:34,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:52:34,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:52:34,833 INFO L134 CoverageAnalysis]: Checked inductivity of 660 backedges. 147 proven. 0 refuted. 0 times theorem prover too weak. 513 trivial. 0 not checked. [2024-11-09 19:52:34,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:52:34,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503300333] [2024-11-09 19:52:34,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503300333] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:52:34,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:52:34,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 19:52:34,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055609868] [2024-11-09 19:52:34,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:52:34,835 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:52:34,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:52:34,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:52:34,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:52:34,836 INFO L87 Difference]: Start difference. First operand 67126 states and 129987 transitions. Second operand has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 0 states have call successors, (0), 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 19:52:37,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:52:37,392 INFO L93 Difference]: Finished difference Result 148758 states and 288147 transitions. [2024-11-09 19:52:37,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:52:37,392 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 0 states have call successors, (0), 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 468 [2024-11-09 19:52:37,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:52:37,520 INFO L225 Difference]: With dead ends: 148758 [2024-11-09 19:52:37,520 INFO L226 Difference]: Without dead ends: 81208 [2024-11-09 19:52:37,550 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 19:52:37,551 INFO L432 NwaCegarLoop]: 215 mSDtfsCounter, 846 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 1986 mSolverCounterSat, 213 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 846 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 2199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 213 IncrementalHoareTripleChecker+Valid, 1986 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-09 19:52:37,551 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [846 Valid, 259 Invalid, 2199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [213 Valid, 1986 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-09 19:52:37,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81208 states. [2024-11-09 19:52:38,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81208 to 62837. [2024-11-09 19:52:38,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62837 states, 62836 states have (on average 1.9385861607995416) internal successors, (121813), 62836 states have internal predecessors, (121813), 0 states have call successors, (0), 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 19:52:38,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62837 states to 62837 states and 121813 transitions. [2024-11-09 19:52:38,807 INFO L78 Accepts]: Start accepts. Automaton has 62837 states and 121813 transitions. Word has length 468 [2024-11-09 19:52:38,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:52:38,807 INFO L471 AbstractCegarLoop]: Abstraction has 62837 states and 121813 transitions. [2024-11-09 19:52:38,807 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 3 states have internal predecessors, (206), 0 states have call successors, (0), 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 19:52:38,807 INFO L276 IsEmpty]: Start isEmpty. Operand 62837 states and 121813 transitions. [2024-11-09 19:52:38,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 489 [2024-11-09 19:52:38,816 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:52:38,816 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 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, 1, 1] [2024-11-09 19:52:38,816 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-09 19:52:38,816 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:52:38,817 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:52:38,817 INFO L85 PathProgramCache]: Analyzing trace with hash -1193861753, now seen corresponding path program 1 times [2024-11-09 19:52:38,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:52:38,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598408010] [2024-11-09 19:52:38,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:52:38,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:52:38,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:52:39,604 INFO L134 CoverageAnalysis]: Checked inductivity of 660 backedges. 412 proven. 0 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2024-11-09 19:52:39,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:52:39,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598408010] [2024-11-09 19:52:39,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598408010] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:52:39,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:52:39,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 19:52:39,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386579277] [2024-11-09 19:52:39,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:52:39,606 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 19:52:39,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:52:39,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 19:52:39,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:52:39,607 INFO L87 Difference]: Start difference. First operand 62837 states and 121813 transitions. Second operand has 4 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 0 states have call successors, (0), 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 19:52:43,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:52:43,813 INFO L93 Difference]: Finished difference Result 154719 states and 299070 transitions. [2024-11-09 19:52:43,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 19:52:43,814 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 0 states have call successors, (0), 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 488 [2024-11-09 19:52:43,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:52:43,922 INFO L225 Difference]: With dead ends: 154719 [2024-11-09 19:52:43,922 INFO L226 Difference]: Without dead ends: 87193 [2024-11-09 19:52:43,939 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 19:52:43,939 INFO L432 NwaCegarLoop]: 146 mSDtfsCounter, 1473 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 3891 mSolverCounterSat, 385 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1473 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 4276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 385 IncrementalHoareTripleChecker+Valid, 3891 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-11-09 19:52:43,940 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1473 Valid, 229 Invalid, 4276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [385 Valid, 3891 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-11-09 19:52:43,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87193 states. [2024-11-09 19:52:44,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87193 to 81182. [2024-11-09 19:52:44,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81182 states, 81181 states have (on average 1.9338391988273118) internal successors, (156991), 81181 states have internal predecessors, (156991), 0 states have call successors, (0), 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 19:52:45,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81182 states to 81182 states and 156991 transitions. [2024-11-09 19:52:45,424 INFO L78 Accepts]: Start accepts. Automaton has 81182 states and 156991 transitions. Word has length 488 [2024-11-09 19:52:45,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:52:45,424 INFO L471 AbstractCegarLoop]: Abstraction has 81182 states and 156991 transitions. [2024-11-09 19:52:45,424 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 0 states have call successors, (0), 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 19:52:45,425 INFO L276 IsEmpty]: Start isEmpty. Operand 81182 states and 156991 transitions. [2024-11-09 19:52:45,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 506 [2024-11-09 19:52:45,448 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:52:45,448 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:52:45,448 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-09 19:52:45,449 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:52:45,449 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:52:45,449 INFO L85 PathProgramCache]: Analyzing trace with hash -106718629, now seen corresponding path program 1 times [2024-11-09 19:52:45,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:52:45,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690700064] [2024-11-09 19:52:45,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:52:45,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:52:45,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:52:45,790 INFO L134 CoverageAnalysis]: Checked inductivity of 954 backedges. 537 proven. 0 refuted. 0 times theorem prover too weak. 417 trivial. 0 not checked. [2024-11-09 19:52:45,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:52:45,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690700064] [2024-11-09 19:52:45,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690700064] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:52:45,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:52:45,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 19:52:45,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021324078] [2024-11-09 19:52:45,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:52:45,791 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 19:52:45,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:52:45,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 19:52:45,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 19:52:45,792 INFO L87 Difference]: Start difference. First operand 81182 states and 156991 transitions. Second operand has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 2 states have internal predecessors, (212), 0 states have call successors, (0), 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 19:52:47,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 19:52:47,416 INFO L93 Difference]: Finished difference Result 161074 states and 311360 transitions. [2024-11-09 19:52:47,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 19:52:47,417 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 2 states have internal predecessors, (212), 0 states have call successors, (0), 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 505 [2024-11-09 19:52:47,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 19:52:47,534 INFO L225 Difference]: With dead ends: 161074 [2024-11-09 19:52:47,534 INFO L226 Difference]: Without dead ends: 79894 [2024-11-09 19:52:47,574 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 19:52:47,575 INFO L432 NwaCegarLoop]: 103 mSDtfsCounter, 981 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1012 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 981 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 1017 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1012 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-09 19:52:47,575 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [981 Valid, 103 Invalid, 1017 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1012 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-09 19:52:47,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79894 states. [2024-11-09 19:52:48,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79894 to 79888. [2024-11-09 19:52:48,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79888 states, 79887 states have (on average 1.9321040970370649) internal successors, (154350), 79887 states have internal predecessors, (154350), 0 states have call successors, (0), 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 19:52:48,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79888 states to 79888 states and 154350 transitions. [2024-11-09 19:52:48,787 INFO L78 Accepts]: Start accepts. Automaton has 79888 states and 154350 transitions. Word has length 505 [2024-11-09 19:52:48,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 19:52:48,788 INFO L471 AbstractCegarLoop]: Abstraction has 79888 states and 154350 transitions. [2024-11-09 19:52:48,788 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 2 states have internal predecessors, (212), 0 states have call successors, (0), 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 19:52:48,788 INFO L276 IsEmpty]: Start isEmpty. Operand 79888 states and 154350 transitions. [2024-11-09 19:52:49,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 506 [2024-11-09 19:52:49,231 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 19:52:49,231 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:52:49,231 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-09 19:52:49,231 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 19:52:49,231 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 19:52:49,232 INFO L85 PathProgramCache]: Analyzing trace with hash 655162682, now seen corresponding path program 1 times [2024-11-09 19:52:49,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 19:52:49,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068149819] [2024-11-09 19:52:49,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 19:52:49,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 19:52:49,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 19:52:49,802 INFO L134 CoverageAnalysis]: Checked inductivity of 954 backedges. 645 proven. 0 refuted. 0 times theorem prover too weak. 309 trivial. 0 not checked. [2024-11-09 19:52:49,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 19:52:49,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068149819] [2024-11-09 19:52:49,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068149819] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 19:52:49,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 19:52:49,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 19:52:49,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878234808] [2024-11-09 19:52:49,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 19:52:49,803 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 19:52:49,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 19:52:49,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 19:52:49,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 19:52:49,804 INFO L87 Difference]: Start difference. First operand 79888 states and 154350 transitions. Second operand has 4 states, 4 states have (on average 70.5) internal successors, (282), 4 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)