./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsaR_p07.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c7c6ca5d 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/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsaR_p07.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-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 64bit --witnessprinter.graph.data.programhash d4a5712020ec411b26b222aa2e78595cdb24e1f443506a64eda3410a2987f6a8 --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-08 19:17:41,952 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 19:17:42,001 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-08 19:17:42,004 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 19:17:42,005 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 19:17:42,025 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 19:17:42,026 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 19:17:42,026 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 19:17:42,027 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 19:17:42,027 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 19:17:42,028 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 19:17:42,028 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 19:17:42,028 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 19:17:42,030 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 19:17:42,030 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 19:17:42,030 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 19:17:42,030 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 19:17:42,031 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 19:17:42,031 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 19:17:42,031 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 19:17:42,031 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 19:17:42,034 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 19:17:42,034 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 19:17:42,034 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 19:17:42,034 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 19:17:42,035 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 19:17:42,035 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 19:17:42,035 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 19:17:42,037 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 19:17:42,037 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 19:17:42,037 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 19:17:42,037 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 19:17:42,037 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 19:17:42,037 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 19:17:42,037 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 19:17:42,038 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 19:17:42,038 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 19:17:42,038 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 19:17:42,038 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 19:17:42,038 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d4a5712020ec411b26b222aa2e78595cdb24e1f443506a64eda3410a2987f6a8 [2024-11-08 19:17:42,233 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 19:17:42,251 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 19:17:42,253 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 19:17:42,254 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 19:17:42,255 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 19:17:42,256 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsaR_p07.c [2024-11-08 19:17:43,518 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 19:17:43,706 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 19:17:43,707 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsaR_p07.c [2024-11-08 19:17:43,718 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68b914e95/f5b17478aa0540e39e5ec702f3f35433/FLAGc37f9bfc8 [2024-11-08 19:17:43,729 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68b914e95/f5b17478aa0540e39e5ec702f3f35433 [2024-11-08 19:17:43,731 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 19:17:43,732 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 19:17:43,735 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 19:17:43,735 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 19:17:43,741 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 19:17:43,742 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 07:17:43" (1/1) ... [2024-11-08 19:17:43,743 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e55f079 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:17:43, skipping insertion in model container [2024-11-08 19:17:43,743 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 07:17:43" (1/1) ... [2024-11-08 19:17:43,781 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 19:17:43,983 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/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsaR_p07.c[1259,1272] [2024-11-08 19:17:44,239 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 19:17:44,249 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 19:17:44,260 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/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsaR_p07.c[1259,1272] [2024-11-08 19:17:44,350 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 19:17:44,363 INFO L204 MainTranslator]: Completed translation [2024-11-08 19:17:44,364 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:17:44 WrapperNode [2024-11-08 19:17:44,364 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 19:17:44,365 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 19:17:44,365 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 19:17:44,365 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 19:17:44,371 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:17:44" (1/1) ... [2024-11-08 19:17:44,416 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:17:44" (1/1) ... [2024-11-08 19:17:44,574 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 2163 [2024-11-08 19:17:44,575 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 19:17:44,576 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 19:17:44,576 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 19:17:44,576 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 19:17:44,584 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:17:44" (1/1) ... [2024-11-08 19:17:44,585 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:17:44" (1/1) ... [2024-11-08 19:17:44,613 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:17:44" (1/1) ... [2024-11-08 19:17:44,677 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]. [2024-11-08 19:17:44,678 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:17:44" (1/1) ... [2024-11-08 19:17:44,678 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:17:44" (1/1) ... [2024-11-08 19:17:44,715 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:17:44" (1/1) ... [2024-11-08 19:17:44,730 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:17:44" (1/1) ... [2024-11-08 19:17:44,748 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:17:44" (1/1) ... [2024-11-08 19:17:44,762 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:17:44" (1/1) ... [2024-11-08 19:17:44,788 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 19:17:44,789 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 19:17:44,789 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 19:17:44,789 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 19:17:44,790 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:17:44" (1/1) ... [2024-11-08 19:17:44,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 19:17:44,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 19:17:44,821 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) [2024-11-08 19:17:44,825 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 [2024-11-08 19:17:44,858 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 19:17:44,858 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 19:17:44,858 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 19:17:44,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 19:17:45,175 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 19:17:45,179 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 19:17:46,867 INFO L? ?]: Removed 1355 outVars from TransFormulas that were not future-live. [2024-11-08 19:17:46,868 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 19:17:46,897 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 19:17:46,900 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-08 19:17:46,901 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 07:17:46 BoogieIcfgContainer [2024-11-08 19:17:46,901 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 19:17:46,902 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 19:17:46,902 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 19:17:46,906 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 19:17:46,907 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 07:17:43" (1/3) ... [2024-11-08 19:17:46,907 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16fb89ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 07:17:46, skipping insertion in model container [2024-11-08 19:17:46,907 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 07:17:44" (2/3) ... [2024-11-08 19:17:46,908 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16fb89ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 07:17:46, skipping insertion in model container [2024-11-08 19:17:46,908 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 07:17:46" (3/3) ... [2024-11-08 19:17:46,909 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vis_arrays_vsaR_p07.c [2024-11-08 19:17:46,922 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 19:17:46,923 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-08 19:17:46,986 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 19:17:46,996 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;@479b34ad, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 19:17:46,996 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-08 19:17:47,003 INFO L276 IsEmpty]: Start isEmpty. Operand has 547 states, 545 states have (on average 1.4990825688073395) internal successors, (817), 546 states have internal predecessors, (817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:17:47,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-08 19:17:47,010 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:17:47,010 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:17:47,011 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:17:47,015 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:17:47,016 INFO L85 PathProgramCache]: Analyzing trace with hash -725709712, now seen corresponding path program 1 times [2024-11-08 19:17:47,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:17:47,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628778902] [2024-11-08 19:17:47,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:17:47,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:17:47,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:17:47,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:17:47,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:17:47,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628778902] [2024-11-08 19:17:47,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628778902] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:17:47,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:17:47,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 19:17:47,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995402355] [2024-11-08 19:17:47,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:17:47,880 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 19:17:47,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:17:47,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 19:17:47,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 19:17:47,902 INFO L87 Difference]: Start difference. First operand has 547 states, 545 states have (on average 1.4990825688073395) internal successors, (817), 546 states have internal predecessors, (817), 0 states have call successors, (0), 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 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:17:48,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:17:48,104 INFO L93 Difference]: Finished difference Result 1235 states and 1849 transitions. [2024-11-08 19:17:48,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 19:17:48,107 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 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 51 [2024-11-08 19:17:48,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:17:48,121 INFO L225 Difference]: With dead ends: 1235 [2024-11-08 19:17:48,121 INFO L226 Difference]: Without dead ends: 742 [2024-11-08 19:17:48,125 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-08 19:17:48,128 INFO L432 NwaCegarLoop]: 794 mSDtfsCounter, 1363 mSDsluCounter, 1588 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1363 SdHoareTripleChecker+Valid, 2382 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 19:17:48,130 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1363 Valid, 2382 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 19:17:48,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 742 states. [2024-11-08 19:17:48,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 742 to 570. [2024-11-08 19:17:48,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 570 states, 569 states have (on average 1.4956063268892794) internal successors, (851), 569 states have internal predecessors, (851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:17:48,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 851 transitions. [2024-11-08 19:17:48,186 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 851 transitions. Word has length 51 [2024-11-08 19:17:48,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:17:48,187 INFO L471 AbstractCegarLoop]: Abstraction has 570 states and 851 transitions. [2024-11-08 19:17:48,187 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:17:48,187 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 851 transitions. [2024-11-08 19:17:48,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-08 19:17:48,188 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:17:48,188 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:17:48,188 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 19:17:48,189 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:17:48,189 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:17:48,189 INFO L85 PathProgramCache]: Analyzing trace with hash -1411244223, now seen corresponding path program 1 times [2024-11-08 19:17:48,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:17:48,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604455983] [2024-11-08 19:17:48,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:17:48,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:17:48,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:17:48,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:17:48,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:17:48,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604455983] [2024-11-08 19:17:48,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604455983] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:17:48,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:17:48,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 19:17:48,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704729824] [2024-11-08 19:17:48,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:17:48,405 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 19:17:48,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:17:48,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 19:17:48,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 19:17:48,406 INFO L87 Difference]: Start difference. First operand 570 states and 851 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:17:48,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:17:48,447 INFO L93 Difference]: Finished difference Result 574 states and 855 transitions. [2024-11-08 19:17:48,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 19:17:48,448 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 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 52 [2024-11-08 19:17:48,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:17:48,450 INFO L225 Difference]: With dead ends: 574 [2024-11-08 19:17:48,450 INFO L226 Difference]: Without dead ends: 572 [2024-11-08 19:17:48,450 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 19:17:48,451 INFO L432 NwaCegarLoop]: 811 mSDtfsCounter, 0 mSDsluCounter, 1616 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2427 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 19:17:48,452 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2427 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 19:17:48,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2024-11-08 19:17:48,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 572. [2024-11-08 19:17:48,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 572 states, 571 states have (on average 1.4938704028021015) internal successors, (853), 571 states have internal predecessors, (853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:17:48,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 853 transitions. [2024-11-08 19:17:48,470 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 853 transitions. Word has length 52 [2024-11-08 19:17:48,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:17:48,470 INFO L471 AbstractCegarLoop]: Abstraction has 572 states and 853 transitions. [2024-11-08 19:17:48,471 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:17:48,471 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 853 transitions. [2024-11-08 19:17:48,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-08 19:17:48,474 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:17:48,474 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:17:48,474 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 19:17:48,474 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:17:48,474 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:17:48,478 INFO L85 PathProgramCache]: Analyzing trace with hash -797202501, now seen corresponding path program 1 times [2024-11-08 19:17:48,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:17:48,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929977470] [2024-11-08 19:17:48,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:17:48,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:17:48,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:17:48,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:17:48,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:17:48,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929977470] [2024-11-08 19:17:48,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929977470] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:17:48,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:17:48,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 19:17:48,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74604625] [2024-11-08 19:17:48,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:17:48,608 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 19:17:48,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:17:48,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 19:17:48,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 19:17:48,609 INFO L87 Difference]: Start difference. First operand 572 states and 853 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:17:48,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:17:48,639 INFO L93 Difference]: Finished difference Result 1066 states and 1591 transitions. [2024-11-08 19:17:48,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 19:17:48,640 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2024-11-08 19:17:48,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:17:48,642 INFO L225 Difference]: With dead ends: 1066 [2024-11-08 19:17:48,642 INFO L226 Difference]: Without dead ends: 574 [2024-11-08 19:17:48,643 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 19:17:48,644 INFO L432 NwaCegarLoop]: 811 mSDtfsCounter, 0 mSDsluCounter, 1612 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2423 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 19:17:48,644 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2423 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 19:17:48,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2024-11-08 19:17:48,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 574. [2024-11-08 19:17:48,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 574 states, 573 states have (on average 1.4921465968586387) internal successors, (855), 573 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:17:48,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 574 states to 574 states and 855 transitions. [2024-11-08 19:17:48,659 INFO L78 Accepts]: Start accepts. Automaton has 574 states and 855 transitions. Word has length 53 [2024-11-08 19:17:48,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:17:48,659 INFO L471 AbstractCegarLoop]: Abstraction has 574 states and 855 transitions. [2024-11-08 19:17:48,659 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:17:48,659 INFO L276 IsEmpty]: Start isEmpty. Operand 574 states and 855 transitions. [2024-11-08 19:17:48,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-08 19:17:48,660 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:17:48,660 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:17:48,660 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-08 19:17:48,660 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:17:48,661 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:17:48,661 INFO L85 PathProgramCache]: Analyzing trace with hash -41439398, now seen corresponding path program 1 times [2024-11-08 19:17:48,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:17:48,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928135663] [2024-11-08 19:17:48,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:17:48,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:17:48,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:17:48,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:17:48,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:17:48,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928135663] [2024-11-08 19:17:48,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928135663] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:17:48,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:17:48,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-08 19:17:48,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961640472] [2024-11-08 19:17:48,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:17:48,940 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 19:17:48,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:17:48,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 19:17:48,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-08 19:17:48,941 INFO L87 Difference]: Start difference. First operand 574 states and 855 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:17:49,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:17:49,007 INFO L93 Difference]: Finished difference Result 1080 states and 1609 transitions. [2024-11-08 19:17:49,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-08 19:17:49,008 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2024-11-08 19:17:49,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:17:49,010 INFO L225 Difference]: With dead ends: 1080 [2024-11-08 19:17:49,010 INFO L226 Difference]: Without dead ends: 586 [2024-11-08 19:17:49,013 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-08 19:17:49,013 INFO L432 NwaCegarLoop]: 805 mSDtfsCounter, 5 mSDsluCounter, 4010 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 4815 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 19:17:49,014 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 4815 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 19:17:49,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2024-11-08 19:17:49,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 585. [2024-11-08 19:17:49,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 585 states, 584 states have (on average 1.4897260273972603) internal successors, (870), 584 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:17:49,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 870 transitions. [2024-11-08 19:17:49,023 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 870 transitions. Word has length 54 [2024-11-08 19:17:49,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:17:49,023 INFO L471 AbstractCegarLoop]: Abstraction has 585 states and 870 transitions. [2024-11-08 19:17:49,023 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:17:49,023 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 870 transitions. [2024-11-08 19:17:49,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-08 19:17:49,024 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:17:49,025 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:17:49,025 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-08 19:17:49,025 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:17:49,025 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:17:49,025 INFO L85 PathProgramCache]: Analyzing trace with hash -499616062, now seen corresponding path program 1 times [2024-11-08 19:17:49,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:17:49,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844699377] [2024-11-08 19:17:49,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:17:49,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:17:49,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:17:49,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:17:49,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:17:49,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844699377] [2024-11-08 19:17:49,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844699377] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:17:49,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:17:49,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 19:17:49,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352789000] [2024-11-08 19:17:49,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:17:49,241 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 19:17:49,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:17:49,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 19:17:49,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 19:17:49,242 INFO L87 Difference]: Start difference. First operand 585 states and 870 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:17:49,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:17:49,287 INFO L93 Difference]: Finished difference Result 1112 states and 1655 transitions. [2024-11-08 19:17:49,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 19:17:49,287 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 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 55 [2024-11-08 19:17:49,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:17:49,289 INFO L225 Difference]: With dead ends: 1112 [2024-11-08 19:17:49,289 INFO L226 Difference]: Without dead ends: 605 [2024-11-08 19:17:49,290 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 19:17:49,293 INFO L432 NwaCegarLoop]: 810 mSDtfsCounter, 8 mSDsluCounter, 2418 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 3228 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 19:17:49,293 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 3228 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 19:17:49,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 605 states. [2024-11-08 19:17:49,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 605 to 605. [2024-11-08 19:17:49,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 605 states, 604 states have (on average 1.4867549668874172) internal successors, (898), 604 states have internal predecessors, (898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:17:49,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 605 states to 605 states and 898 transitions. [2024-11-08 19:17:49,304 INFO L78 Accepts]: Start accepts. Automaton has 605 states and 898 transitions. Word has length 55 [2024-11-08 19:17:49,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:17:49,305 INFO L471 AbstractCegarLoop]: Abstraction has 605 states and 898 transitions. [2024-11-08 19:17:49,305 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:17:49,305 INFO L276 IsEmpty]: Start isEmpty. Operand 605 states and 898 transitions. [2024-11-08 19:17:49,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-08 19:17:49,306 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:17:49,306 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:17:49,306 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-08 19:17:49,306 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:17:49,307 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:17:49,307 INFO L85 PathProgramCache]: Analyzing trace with hash 1556487095, now seen corresponding path program 1 times [2024-11-08 19:17:49,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:17:49,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970661046] [2024-11-08 19:17:49,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:17:49,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:17:49,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:17:49,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:17:49,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:17:49,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970661046] [2024-11-08 19:17:49,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970661046] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:17:49,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:17:49,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-08 19:17:49,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045071007] [2024-11-08 19:17:49,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:17:49,703 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-08 19:17:49,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:17:49,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-08 19:17:49,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-08 19:17:49,704 INFO L87 Difference]: Start difference. First operand 605 states and 898 transitions. Second operand has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:17:49,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:17:49,866 INFO L93 Difference]: Finished difference Result 1125 states and 1671 transitions. [2024-11-08 19:17:49,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-08 19:17:49,866 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 0 states have call successors, (0), 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 56 [2024-11-08 19:17:49,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:17:49,869 INFO L225 Difference]: With dead ends: 1125 [2024-11-08 19:17:49,869 INFO L226 Difference]: Without dead ends: 612 [2024-11-08 19:17:49,870 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-11-08 19:17:49,871 INFO L432 NwaCegarLoop]: 800 mSDtfsCounter, 788 mSDsluCounter, 4782 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 788 SdHoareTripleChecker+Valid, 5582 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 19:17:49,871 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [788 Valid, 5582 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 19:17:49,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2024-11-08 19:17:49,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 609. [2024-11-08 19:17:49,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 609 states, 608 states have (on average 1.4851973684210527) internal successors, (903), 608 states have internal predecessors, (903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:17:49,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 609 states to 609 states and 903 transitions. [2024-11-08 19:17:49,881 INFO L78 Accepts]: Start accepts. Automaton has 609 states and 903 transitions. Word has length 56 [2024-11-08 19:17:49,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:17:49,882 INFO L471 AbstractCegarLoop]: Abstraction has 609 states and 903 transitions. [2024-11-08 19:17:49,884 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:17:49,884 INFO L276 IsEmpty]: Start isEmpty. Operand 609 states and 903 transitions. [2024-11-08 19:17:49,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-08 19:17:49,885 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:17:49,885 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:17:49,885 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-08 19:17:49,885 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:17:49,885 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:17:49,885 INFO L85 PathProgramCache]: Analyzing trace with hash 1131234223, now seen corresponding path program 1 times [2024-11-08 19:17:49,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:17:49,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289249256] [2024-11-08 19:17:49,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:17:49,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:17:49,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:17:50,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:17:50,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:17:50,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289249256] [2024-11-08 19:17:50,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289249256] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:17:50,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:17:50,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-08 19:17:50,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603922318] [2024-11-08 19:17:50,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:17:50,136 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 19:17:50,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:17:50,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 19:17:50,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-08 19:17:50,137 INFO L87 Difference]: Start difference. First operand 609 states and 903 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:17:50,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:17:50,246 INFO L93 Difference]: Finished difference Result 1358 states and 2009 transitions. [2024-11-08 19:17:50,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 19:17:50,247 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 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 56 [2024-11-08 19:17:50,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:17:50,249 INFO L225 Difference]: With dead ends: 1358 [2024-11-08 19:17:50,249 INFO L226 Difference]: Without dead ends: 823 [2024-11-08 19:17:50,250 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-08 19:17:50,251 INFO L432 NwaCegarLoop]: 799 mSDtfsCounter, 1340 mSDsluCounter, 2387 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1340 SdHoareTripleChecker+Valid, 3186 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 19:17:50,252 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1340 Valid, 3186 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 19:17:50,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 823 states. [2024-11-08 19:17:50,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 823 to 621. [2024-11-08 19:17:50,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 621 states, 620 states have (on average 1.482258064516129) internal successors, (919), 620 states have internal predecessors, (919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:17:50,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 919 transitions. [2024-11-08 19:17:50,263 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 919 transitions. Word has length 56 [2024-11-08 19:17:50,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:17:50,263 INFO L471 AbstractCegarLoop]: Abstraction has 621 states and 919 transitions. [2024-11-08 19:17:50,263 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:17:50,263 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 919 transitions. [2024-11-08 19:17:50,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-08 19:17:50,264 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:17:50,265 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:17:50,265 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-08 19:17:50,265 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:17:50,265 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:17:50,265 INFO L85 PathProgramCache]: Analyzing trace with hash -1723962207, now seen corresponding path program 1 times [2024-11-08 19:17:50,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:17:50,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842400499] [2024-11-08 19:17:50,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:17:50,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:17:50,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:17:50,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:17:50,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:17:50,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842400499] [2024-11-08 19:17:50,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842400499] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:17:50,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:17:50,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 19:17:50,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106918096] [2024-11-08 19:17:50,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:17:50,557 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 19:17:50,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:17:50,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 19:17:50,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-08 19:17:50,557 INFO L87 Difference]: Start difference. First operand 621 states and 919 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:17:50,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:17:50,653 INFO L93 Difference]: Finished difference Result 1331 states and 1971 transitions. [2024-11-08 19:17:50,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 19:17:50,654 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 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 57 [2024-11-08 19:17:50,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:17:50,656 INFO L225 Difference]: With dead ends: 1331 [2024-11-08 19:17:50,656 INFO L226 Difference]: Without dead ends: 808 [2024-11-08 19:17:50,657 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-08 19:17:50,659 INFO L432 NwaCegarLoop]: 799 mSDtfsCounter, 1067 mSDsluCounter, 1596 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1067 SdHoareTripleChecker+Valid, 2395 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 19:17:50,660 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1067 Valid, 2395 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 19:17:50,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 808 states. [2024-11-08 19:17:50,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 808 to 623. [2024-11-08 19:17:50,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 623 states, 622 states have (on average 1.4807073954983923) internal successors, (921), 622 states have internal predecessors, (921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:17:50,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 921 transitions. [2024-11-08 19:17:50,672 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 921 transitions. Word has length 57 [2024-11-08 19:17:50,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:17:50,672 INFO L471 AbstractCegarLoop]: Abstraction has 623 states and 921 transitions. [2024-11-08 19:17:50,673 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:17:50,673 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 921 transitions. [2024-11-08 19:17:50,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-08 19:17:50,673 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:17:50,673 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:17:50,673 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-08 19:17:50,673 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:17:50,674 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:17:50,674 INFO L85 PathProgramCache]: Analyzing trace with hash -713745035, now seen corresponding path program 1 times [2024-11-08 19:17:50,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:17:50,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282052549] [2024-11-08 19:17:50,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:17:50,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:17:50,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:17:51,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:17:51,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:17:51,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282052549] [2024-11-08 19:17:51,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282052549] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:17:51,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:17:51,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-08 19:17:51,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855284220] [2024-11-08 19:17:51,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:17:51,198 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-08 19:17:51,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:17:51,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-08 19:17:51,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-08 19:17:51,198 INFO L87 Difference]: Start difference. First operand 623 states and 921 transitions. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:17:51,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:17:51,451 INFO L93 Difference]: Finished difference Result 1327 states and 1964 transitions. [2024-11-08 19:17:51,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-08 19:17:51,451 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 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 58 [2024-11-08 19:17:51,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:17:51,454 INFO L225 Difference]: With dead ends: 1327 [2024-11-08 19:17:51,454 INFO L226 Difference]: Without dead ends: 804 [2024-11-08 19:17:51,455 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2024-11-08 19:17:51,455 INFO L432 NwaCegarLoop]: 791 mSDtfsCounter, 1375 mSDsluCounter, 4214 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1375 SdHoareTripleChecker+Valid, 5005 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 19:17:51,456 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1375 Valid, 5005 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 19:17:51,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 804 states. [2024-11-08 19:17:51,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 804 to 627. [2024-11-08 19:17:51,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 627 states, 626 states have (on average 1.4792332268370607) internal successors, (926), 626 states have internal predecessors, (926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:17:51,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 627 states to 627 states and 926 transitions. [2024-11-08 19:17:51,466 INFO L78 Accepts]: Start accepts. Automaton has 627 states and 926 transitions. Word has length 58 [2024-11-08 19:17:51,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:17:51,466 INFO L471 AbstractCegarLoop]: Abstraction has 627 states and 926 transitions. [2024-11-08 19:17:51,466 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:17:51,466 INFO L276 IsEmpty]: Start isEmpty. Operand 627 states and 926 transitions. [2024-11-08 19:17:51,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-08 19:17:51,466 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:17:51,467 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:17:51,467 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-08 19:17:51,467 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:17:51,469 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:17:51,469 INFO L85 PathProgramCache]: Analyzing trace with hash -965086644, now seen corresponding path program 1 times [2024-11-08 19:17:51,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:17:51,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785319588] [2024-11-08 19:17:51,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:17:51,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:17:51,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:17:51,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:17:51,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:17:51,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785319588] [2024-11-08 19:17:51,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785319588] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:17:51,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:17:51,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-08 19:17:51,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713363647] [2024-11-08 19:17:51,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:17:51,730 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-08 19:17:51,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:17:51,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-08 19:17:51,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-08 19:17:51,731 INFO L87 Difference]: Start difference. First operand 627 states and 926 transitions. Second operand has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:17:51,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:17:51,872 INFO L93 Difference]: Finished difference Result 1182 states and 1745 transitions. [2024-11-08 19:17:51,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-08 19:17:51,872 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 0 states have call successors, (0), 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 58 [2024-11-08 19:17:51,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:17:51,874 INFO L225 Difference]: With dead ends: 1182 [2024-11-08 19:17:51,874 INFO L226 Difference]: Without dead ends: 635 [2024-11-08 19:17:51,874 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-11-08 19:17:51,875 INFO L432 NwaCegarLoop]: 797 mSDtfsCounter, 804 mSDsluCounter, 3965 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 804 SdHoareTripleChecker+Valid, 4762 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 19:17:51,875 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [804 Valid, 4762 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 19:17:51,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 635 states. [2024-11-08 19:17:51,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 635 to 627. [2024-11-08 19:17:51,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 627 states, 626 states have (on average 1.4792332268370607) internal successors, (926), 626 states have internal predecessors, (926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:17:51,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 627 states to 627 states and 926 transitions. [2024-11-08 19:17:51,882 INFO L78 Accepts]: Start accepts. Automaton has 627 states and 926 transitions. Word has length 58 [2024-11-08 19:17:51,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:17:51,882 INFO L471 AbstractCegarLoop]: Abstraction has 627 states and 926 transitions. [2024-11-08 19:17:51,882 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:17:51,883 INFO L276 IsEmpty]: Start isEmpty. Operand 627 states and 926 transitions. [2024-11-08 19:17:51,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-08 19:17:51,883 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:17:51,883 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:17:51,883 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-08 19:17:51,883 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:17:51,883 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:17:51,884 INFO L85 PathProgramCache]: Analyzing trace with hash -734874646, now seen corresponding path program 1 times [2024-11-08 19:17:51,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:17:51,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482313787] [2024-11-08 19:17:51,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:17:51,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:17:51,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:17:52,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:17:52,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:17:52,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482313787] [2024-11-08 19:17:52,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482313787] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:17:52,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:17:52,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-08 19:17:52,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476576058] [2024-11-08 19:17:52,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:17:52,248 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-08 19:17:52,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:17:52,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-08 19:17:52,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-08 19:17:52,249 INFO L87 Difference]: Start difference. First operand 627 states and 926 transitions. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:17:52,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:17:52,724 INFO L93 Difference]: Finished difference Result 1397 states and 2057 transitions. [2024-11-08 19:17:52,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-08 19:17:52,724 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2024-11-08 19:17:52,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:17:52,727 INFO L225 Difference]: With dead ends: 1397 [2024-11-08 19:17:52,727 INFO L226 Difference]: Without dead ends: 850 [2024-11-08 19:17:52,727 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2024-11-08 19:17:52,728 INFO L432 NwaCegarLoop]: 1020 mSDtfsCounter, 1081 mSDsluCounter, 5824 mSDsCounter, 0 mSdLazyCounter, 512 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1081 SdHoareTripleChecker+Valid, 6844 SdHoareTripleChecker+Invalid, 514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 512 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-08 19:17:52,728 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1081 Valid, 6844 Invalid, 514 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 512 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-08 19:17:52,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 850 states. [2024-11-08 19:17:52,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 850 to 627. [2024-11-08 19:17:52,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 627 states, 626 states have (on average 1.4792332268370607) internal successors, (926), 626 states have internal predecessors, (926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:17:52,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 627 states to 627 states and 926 transitions. [2024-11-08 19:17:52,736 INFO L78 Accepts]: Start accepts. Automaton has 627 states and 926 transitions. Word has length 59 [2024-11-08 19:17:52,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:17:52,736 INFO L471 AbstractCegarLoop]: Abstraction has 627 states and 926 transitions. [2024-11-08 19:17:52,737 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:17:52,737 INFO L276 IsEmpty]: Start isEmpty. Operand 627 states and 926 transitions. [2024-11-08 19:17:52,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-08 19:17:52,737 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:17:52,737 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:17:52,737 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-08 19:17:52,737 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:17:52,738 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:17:52,738 INFO L85 PathProgramCache]: Analyzing trace with hash 1503738792, now seen corresponding path program 1 times [2024-11-08 19:17:52,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:17:52,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222643338] [2024-11-08 19:17:52,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:17:52,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:17:52,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:17:52,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:17:52,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:17:52,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222643338] [2024-11-08 19:17:52,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222643338] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:17:52,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:17:52,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 19:17:52,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420279237] [2024-11-08 19:17:52,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:17:52,903 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 19:17:52,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:17:52,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 19:17:52,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 19:17:52,904 INFO L87 Difference]: Start difference. First operand 627 states and 926 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:17:52,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:17:52,987 INFO L93 Difference]: Finished difference Result 1277 states and 1886 transitions. [2024-11-08 19:17:52,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 19:17:52,988 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2024-11-08 19:17:52,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:17:52,989 INFO L225 Difference]: With dead ends: 1277 [2024-11-08 19:17:52,990 INFO L226 Difference]: Without dead ends: 706 [2024-11-08 19:17:52,990 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-08 19:17:52,991 INFO L432 NwaCegarLoop]: 799 mSDtfsCounter, 236 mSDsluCounter, 2308 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 3107 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 19:17:52,991 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 3107 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 19:17:52,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2024-11-08 19:17:52,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 602. [2024-11-08 19:17:52,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 602 states, 601 states have (on average 1.4792013311148087) internal successors, (889), 601 states have internal predecessors, (889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:17:52,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 889 transitions. [2024-11-08 19:17:52,999 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 889 transitions. Word has length 60 [2024-11-08 19:17:52,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:17:52,999 INFO L471 AbstractCegarLoop]: Abstraction has 602 states and 889 transitions. [2024-11-08 19:17:52,999 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:17:53,000 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 889 transitions. [2024-11-08 19:17:53,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2024-11-08 19:17:53,003 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:17:53,003 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:17:53,003 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-08 19:17:53,004 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:17:53,004 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:17:53,004 INFO L85 PathProgramCache]: Analyzing trace with hash -116639019, now seen corresponding path program 1 times [2024-11-08 19:17:53,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:17:53,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496096865] [2024-11-08 19:17:53,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:17:53,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:17:55,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:17:57,191 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:17:57,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:17:57,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496096865] [2024-11-08 19:17:57,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496096865] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:17:57,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:17:57,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-08 19:17:57,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143685133] [2024-11-08 19:17:57,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:17:57,193 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 19:17:57,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:17:57,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 19:17:57,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-08 19:17:57,194 INFO L87 Difference]: Start difference. First operand 602 states and 889 transitions. Second operand has 6 states, 6 states have (on average 50.5) internal successors, (303), 6 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:17:57,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:17:57,357 INFO L93 Difference]: Finished difference Result 1948 states and 2893 transitions. [2024-11-08 19:17:57,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-08 19:17:57,358 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 50.5) internal successors, (303), 6 states have internal predecessors, (303), 0 states have call successors, (0), 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 303 [2024-11-08 19:17:57,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:17:57,362 INFO L225 Difference]: With dead ends: 1948 [2024-11-08 19:17:57,362 INFO L226 Difference]: Without dead ends: 1425 [2024-11-08 19:17:57,364 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-08 19:17:57,364 INFO L432 NwaCegarLoop]: 1075 mSDtfsCounter, 949 mSDsluCounter, 4008 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 949 SdHoareTripleChecker+Valid, 5083 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 19:17:57,364 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [949 Valid, 5083 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 19:17:57,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1425 states. [2024-11-08 19:17:57,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1425 to 1088. [2024-11-08 19:17:57,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1088 states, 1087 states have (on average 1.484820607175713) internal successors, (1614), 1087 states have internal predecessors, (1614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:17:57,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1088 states to 1088 states and 1614 transitions. [2024-11-08 19:17:57,380 INFO L78 Accepts]: Start accepts. Automaton has 1088 states and 1614 transitions. Word has length 303 [2024-11-08 19:17:57,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:17:57,381 INFO L471 AbstractCegarLoop]: Abstraction has 1088 states and 1614 transitions. [2024-11-08 19:17:57,381 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 50.5) internal successors, (303), 6 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:17:57,381 INFO L276 IsEmpty]: Start isEmpty. Operand 1088 states and 1614 transitions. [2024-11-08 19:17:57,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2024-11-08 19:17:57,383 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:17:57,384 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:17:57,384 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-08 19:17:57,384 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:17:57,385 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:17:57,385 INFO L85 PathProgramCache]: Analyzing trace with hash -1720053578, now seen corresponding path program 1 times [2024-11-08 19:17:57,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:17:57,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387424944] [2024-11-08 19:17:57,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:17:57,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:17:58,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:18:00,163 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-08 19:18:00,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:18:00,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387424944] [2024-11-08 19:18:00,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387424944] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:18:00,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:18:00,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 19:18:00,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809389261] [2024-11-08 19:18:00,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:18:00,165 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 19:18:00,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:18:00,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 19:18:00,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 19:18:00,166 INFO L87 Difference]: Start difference. First operand 1088 states and 1614 transitions. Second operand has 3 states, 3 states have (on average 97.33333333333333) internal successors, (292), 3 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:18:00,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:18:00,189 INFO L93 Difference]: Finished difference Result 2097 states and 3116 transitions. [2024-11-08 19:18:00,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 19:18:00,190 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 97.33333333333333) internal successors, (292), 3 states have internal predecessors, (292), 0 states have call successors, (0), 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 304 [2024-11-08 19:18:00,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:18:00,193 INFO L225 Difference]: With dead ends: 2097 [2024-11-08 19:18:00,193 INFO L226 Difference]: Without dead ends: 1088 [2024-11-08 19:18:00,194 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 [2024-11-08 19:18:00,194 INFO L432 NwaCegarLoop]: 808 mSDtfsCounter, 2 mSDsluCounter, 805 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1613 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 19:18:00,194 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1613 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 19:18:00,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1088 states. [2024-11-08 19:18:00,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1088 to 602. [2024-11-08 19:18:00,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 602 states, 601 states have (on average 1.475873544093178) internal successors, (887), 601 states have internal predecessors, (887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:18:00,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 887 transitions. [2024-11-08 19:18:00,202 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 887 transitions. Word has length 304 [2024-11-08 19:18:00,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:18:00,203 INFO L471 AbstractCegarLoop]: Abstraction has 602 states and 887 transitions. [2024-11-08 19:18:00,203 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 97.33333333333333) internal successors, (292), 3 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:18:00,203 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 887 transitions. [2024-11-08 19:18:00,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2024-11-08 19:18:00,205 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:18:00,205 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:18:00,205 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-08 19:18:00,205 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:18:00,206 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:18:00,206 INFO L85 PathProgramCache]: Analyzing trace with hash 1640945406, now seen corresponding path program 1 times [2024-11-08 19:18:00,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:18:00,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511256590] [2024-11-08 19:18:00,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:18:00,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:18:02,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:18:04,167 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:18:04,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:18:04,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511256590] [2024-11-08 19:18:04,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511256590] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:18:04,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:18:04,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 19:18:04,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571934708] [2024-11-08 19:18:04,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:18:04,168 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 19:18:04,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:18:04,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 19:18:04,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 19:18:04,169 INFO L87 Difference]: Start difference. First operand 602 states and 887 transitions. Second operand has 5 states, 5 states have (on average 60.8) internal successors, (304), 5 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:18:04,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:18:04,380 INFO L93 Difference]: Finished difference Result 1285 states and 1899 transitions. [2024-11-08 19:18:04,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 19:18:04,381 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 60.8) internal successors, (304), 5 states have internal predecessors, (304), 0 states have call successors, (0), 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 304 [2024-11-08 19:18:04,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:18:04,383 INFO L225 Difference]: With dead ends: 1285 [2024-11-08 19:18:04,383 INFO L226 Difference]: Without dead ends: 762 [2024-11-08 19:18:04,384 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-08 19:18:04,384 INFO L432 NwaCegarLoop]: 753 mSDtfsCounter, 1299 mSDsluCounter, 1503 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1299 SdHoareTripleChecker+Valid, 2256 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 19:18:04,384 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1299 Valid, 2256 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 19:18:04,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 762 states. [2024-11-08 19:18:04,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 762 to 610. [2024-11-08 19:18:04,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 610 states, 609 states have (on average 1.4696223316912973) internal successors, (895), 609 states have internal predecessors, (895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:18:04,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 610 states to 610 states and 895 transitions. [2024-11-08 19:18:04,392 INFO L78 Accepts]: Start accepts. Automaton has 610 states and 895 transitions. Word has length 304 [2024-11-08 19:18:04,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:18:04,392 INFO L471 AbstractCegarLoop]: Abstraction has 610 states and 895 transitions. [2024-11-08 19:18:04,392 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 60.8) internal successors, (304), 5 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:18:04,392 INFO L276 IsEmpty]: Start isEmpty. Operand 610 states and 895 transitions. [2024-11-08 19:18:04,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2024-11-08 19:18:04,395 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:18:04,395 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:18:04,395 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-08 19:18:04,395 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:18:04,396 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:18:04,396 INFO L85 PathProgramCache]: Analyzing trace with hash -820265667, now seen corresponding path program 1 times [2024-11-08 19:18:04,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:18:04,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618664878] [2024-11-08 19:18:04,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:18:04,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:18:05,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:18:07,148 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:18:07,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:18:07,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618664878] [2024-11-08 19:18:07,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618664878] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:18:07,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:18:07,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 19:18:07,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122365250] [2024-11-08 19:18:07,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:18:07,150 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 19:18:07,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:18:07,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 19:18:07,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-08 19:18:07,150 INFO L87 Difference]: Start difference. First operand 610 states and 895 transitions. Second operand has 5 states, 5 states have (on average 61.0) internal successors, (305), 5 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:18:07,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:18:07,359 INFO L93 Difference]: Finished difference Result 1285 states and 1898 transitions. [2024-11-08 19:18:07,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 19:18:07,359 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 61.0) internal successors, (305), 5 states have internal predecessors, (305), 0 states have call successors, (0), 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 305 [2024-11-08 19:18:07,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:18:07,362 INFO L225 Difference]: With dead ends: 1285 [2024-11-08 19:18:07,362 INFO L226 Difference]: Without dead ends: 762 [2024-11-08 19:18:07,363 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-08 19:18:07,363 INFO L432 NwaCegarLoop]: 757 mSDtfsCounter, 1270 mSDsluCounter, 1510 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1270 SdHoareTripleChecker+Valid, 2267 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 19:18:07,363 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1270 Valid, 2267 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 19:18:07,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 762 states. [2024-11-08 19:18:07,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 762 to 611. [2024-11-08 19:18:07,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 611 states, 610 states have (on average 1.4688524590163934) internal successors, (896), 610 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:18:07,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 896 transitions. [2024-11-08 19:18:07,374 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 896 transitions. Word has length 305 [2024-11-08 19:18:07,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:18:07,374 INFO L471 AbstractCegarLoop]: Abstraction has 611 states and 896 transitions. [2024-11-08 19:18:07,375 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 61.0) internal successors, (305), 5 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:18:07,375 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 896 transitions. [2024-11-08 19:18:07,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2024-11-08 19:18:07,377 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:18:07,378 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:18:07,378 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-08 19:18:07,378 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:18:07,378 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:18:07,379 INFO L85 PathProgramCache]: Analyzing trace with hash -929940191, now seen corresponding path program 1 times [2024-11-08 19:18:07,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:18:07,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474829135] [2024-11-08 19:18:07,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:18:07,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:18:10,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:18:11,727 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 21 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:18:11,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:18:11,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474829135] [2024-11-08 19:18:11,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474829135] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 19:18:11,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2073260958] [2024-11-08 19:18:11,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:18:11,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:18:11,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 19:18:11,730 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) [2024-11-08 19:18:11,731 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 19:18:13,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:18:13,125 INFO L255 TraceCheckSpWp]: Trace formula consists of 2514 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-08 19:18:13,145 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:18:14,222 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 21 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:18:14,222 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 19:18:15,482 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 8 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:18:15,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2073260958] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 19:18:15,484 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 19:18:15,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 8] total 18 [2024-11-08 19:18:15,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550078327] [2024-11-08 19:18:15,484 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 19:18:15,485 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-08 19:18:15,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:18:15,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-08 19:18:15,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2024-11-08 19:18:15,486 INFO L87 Difference]: Start difference. First operand 611 states and 896 transitions. Second operand has 18 states, 18 states have (on average 49.888888888888886) internal successors, (898), 18 states have internal predecessors, (898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:18:16,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:18:16,475 INFO L93 Difference]: Finished difference Result 1851 states and 2736 transitions. [2024-11-08 19:18:16,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-08 19:18:16,476 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 49.888888888888886) internal successors, (898), 18 states have internal predecessors, (898), 0 states have call successors, (0), 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 306 [2024-11-08 19:18:16,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:18:16,479 INFO L225 Difference]: With dead ends: 1851 [2024-11-08 19:18:16,479 INFO L226 Difference]: Without dead ends: 1328 [2024-11-08 19:18:16,481 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 622 GetRequests, 602 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=108, Invalid=354, Unknown=0, NotChecked=0, Total=462 [2024-11-08 19:18:16,483 INFO L432 NwaCegarLoop]: 621 mSDtfsCounter, 3755 mSDsluCounter, 4759 mSDsCounter, 0 mSdLazyCounter, 1696 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3755 SdHoareTripleChecker+Valid, 5380 SdHoareTripleChecker+Invalid, 1699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1696 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-08 19:18:16,483 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3755 Valid, 5380 Invalid, 1699 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1696 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-08 19:18:16,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1328 states. [2024-11-08 19:18:16,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1328 to 1046. [2024-11-08 19:18:16,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1046 states, 1045 states have (on average 1.476555023923445) internal successors, (1543), 1045 states have internal predecessors, (1543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:18:16,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1046 states to 1046 states and 1543 transitions. [2024-11-08 19:18:16,506 INFO L78 Accepts]: Start accepts. Automaton has 1046 states and 1543 transitions. Word has length 306 [2024-11-08 19:18:16,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:18:16,507 INFO L471 AbstractCegarLoop]: Abstraction has 1046 states and 1543 transitions. [2024-11-08 19:18:16,507 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 49.888888888888886) internal successors, (898), 18 states have internal predecessors, (898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:18:16,507 INFO L276 IsEmpty]: Start isEmpty. Operand 1046 states and 1543 transitions. [2024-11-08 19:18:16,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2024-11-08 19:18:16,511 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:18:16,511 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:18:16,534 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-08 19:18:16,711 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-08 19:18:16,712 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:18:16,713 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:18:16,713 INFO L85 PathProgramCache]: Analyzing trace with hash -1868866315, now seen corresponding path program 1 times [2024-11-08 19:18:16,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:18:16,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570472364] [2024-11-08 19:18:16,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:18:16,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:18:18,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:18:21,625 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:18:21,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:18:21,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570472364] [2024-11-08 19:18:21,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570472364] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 19:18:21,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [991857228] [2024-11-08 19:18:21,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:18:21,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:18:21,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 19:18:21,627 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) [2024-11-08 19:18:21,627 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 19:18:22,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:18:22,908 INFO L255 TraceCheckSpWp]: Trace formula consists of 2515 conjuncts, 62 conjuncts are in the unsatisfiable core [2024-11-08 19:18:22,928 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:18:23,327 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:18:23,327 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 19:18:23,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [991857228] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:18:23,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 19:18:23,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [13] total 19 [2024-11-08 19:18:23,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009663389] [2024-11-08 19:18:23,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:18:23,328 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-08 19:18:23,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:18:23,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-08 19:18:23,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2024-11-08 19:18:23,329 INFO L87 Difference]: Start difference. First operand 1046 states and 1543 transitions. Second operand has 8 states, 8 states have (on average 38.375) internal successors, (307), 8 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:18:23,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:18:23,845 INFO L93 Difference]: Finished difference Result 2183 states and 3221 transitions. [2024-11-08 19:18:23,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-08 19:18:23,845 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 38.375) internal successors, (307), 8 states have internal predecessors, (307), 0 states have call successors, (0), 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 307 [2024-11-08 19:18:23,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:18:23,848 INFO L225 Difference]: With dead ends: 2183 [2024-11-08 19:18:23,848 INFO L226 Difference]: Without dead ends: 1225 [2024-11-08 19:18:23,850 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 304 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2024-11-08 19:18:23,850 INFO L432 NwaCegarLoop]: 618 mSDtfsCounter, 1078 mSDsluCounter, 3057 mSDsCounter, 0 mSdLazyCounter, 1196 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1078 SdHoareTripleChecker+Valid, 3675 SdHoareTripleChecker+Invalid, 1198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-08 19:18:23,850 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1078 Valid, 3675 Invalid, 1198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1196 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-08 19:18:23,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1225 states. [2024-11-08 19:18:23,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1225 to 1115. [2024-11-08 19:18:23,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1115 states, 1114 states have (on average 1.4676840215439857) internal successors, (1635), 1114 states have internal predecessors, (1635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:18:23,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1115 states to 1115 states and 1635 transitions. [2024-11-08 19:18:23,867 INFO L78 Accepts]: Start accepts. Automaton has 1115 states and 1635 transitions. Word has length 307 [2024-11-08 19:18:23,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:18:23,867 INFO L471 AbstractCegarLoop]: Abstraction has 1115 states and 1635 transitions. [2024-11-08 19:18:23,867 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 38.375) internal successors, (307), 8 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:18:23,867 INFO L276 IsEmpty]: Start isEmpty. Operand 1115 states and 1635 transitions. [2024-11-08 19:18:23,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2024-11-08 19:18:23,870 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:18:23,870 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:18:23,891 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-08 19:18:24,071 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,SelfDestructingSolverStorable17 [2024-11-08 19:18:24,072 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:18:24,072 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:18:24,072 INFO L85 PathProgramCache]: Analyzing trace with hash 1822976622, now seen corresponding path program 1 times [2024-11-08 19:18:24,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:18:24,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770604490] [2024-11-08 19:18:24,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:18:24,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:18:24,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:18:26,072 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:18:26,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:18:26,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770604490] [2024-11-08 19:18:26,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770604490] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:18:26,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:18:26,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-08 19:18:26,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999165300] [2024-11-08 19:18:26,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:18:26,073 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-08 19:18:26,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:18:26,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-08 19:18:26,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-08 19:18:26,073 INFO L87 Difference]: Start difference. First operand 1115 states and 1635 transitions. Second operand has 9 states, 9 states have (on average 34.22222222222222) internal successors, (308), 9 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:18:26,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:18:26,562 INFO L93 Difference]: Finished difference Result 2255 states and 3314 transitions. [2024-11-08 19:18:26,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-08 19:18:26,563 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 34.22222222222222) internal successors, (308), 9 states have internal predecessors, (308), 0 states have call successors, (0), 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 308 [2024-11-08 19:18:26,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:18:26,567 INFO L225 Difference]: With dead ends: 2255 [2024-11-08 19:18:26,567 INFO L226 Difference]: Without dead ends: 1225 [2024-11-08 19:18:26,569 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-11-08 19:18:26,570 INFO L432 NwaCegarLoop]: 795 mSDtfsCounter, 1089 mSDsluCounter, 4057 mSDsCounter, 0 mSdLazyCounter, 830 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1089 SdHoareTripleChecker+Valid, 4852 SdHoareTripleChecker+Invalid, 830 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 830 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-08 19:18:26,570 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1089 Valid, 4852 Invalid, 830 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 830 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-08 19:18:26,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1225 states. [2024-11-08 19:18:26,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1225 to 1115. [2024-11-08 19:18:26,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1115 states, 1114 states have (on average 1.466786355475763) internal successors, (1634), 1114 states have internal predecessors, (1634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:18:26,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1115 states to 1115 states and 1634 transitions. [2024-11-08 19:18:26,586 INFO L78 Accepts]: Start accepts. Automaton has 1115 states and 1634 transitions. Word has length 308 [2024-11-08 19:18:26,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:18:26,586 INFO L471 AbstractCegarLoop]: Abstraction has 1115 states and 1634 transitions. [2024-11-08 19:18:26,586 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 34.22222222222222) internal successors, (308), 9 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:18:26,586 INFO L276 IsEmpty]: Start isEmpty. Operand 1115 states and 1634 transitions. [2024-11-08 19:18:26,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2024-11-08 19:18:26,588 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:18:26,588 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:18:26,588 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-08 19:18:26,588 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:18:26,589 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:18:26,589 INFO L85 PathProgramCache]: Analyzing trace with hash 1469327982, now seen corresponding path program 1 times [2024-11-08 19:18:26,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:18:26,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506516226] [2024-11-08 19:18:26,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:18:26,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:18:29,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:18:31,604 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:18:31,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:18:31,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506516226] [2024-11-08 19:18:31,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506516226] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 19:18:31,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 19:18:31,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-08 19:18:31,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300702957] [2024-11-08 19:18:31,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 19:18:31,606 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 19:18:31,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 19:18:31,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 19:18:31,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-08 19:18:31,607 INFO L87 Difference]: Start difference. First operand 1115 states and 1634 transitions. Second operand has 7 states, 7 states have (on average 44.142857142857146) internal successors, (309), 7 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:18:31,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 19:18:31,680 INFO L93 Difference]: Finished difference Result 2376 states and 3497 transitions. [2024-11-08 19:18:31,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-08 19:18:31,680 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 44.142857142857146) internal successors, (309), 7 states have internal predecessors, (309), 0 states have call successors, (0), 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 309 [2024-11-08 19:18:31,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 19:18:31,684 INFO L225 Difference]: With dead ends: 2376 [2024-11-08 19:18:31,684 INFO L226 Difference]: Without dead ends: 1349 [2024-11-08 19:18:31,685 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-08 19:18:31,685 INFO L432 NwaCegarLoop]: 802 mSDtfsCounter, 878 mSDsluCounter, 2547 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 878 SdHoareTripleChecker+Valid, 3349 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 19:18:31,686 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [878 Valid, 3349 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 19:18:31,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1349 states. [2024-11-08 19:18:31,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1349 to 1123. [2024-11-08 19:18:31,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1123 states, 1122 states have (on average 1.46524064171123) internal successors, (1644), 1122 states have internal predecessors, (1644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:18:31,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1123 states to 1123 states and 1644 transitions. [2024-11-08 19:18:31,702 INFO L78 Accepts]: Start accepts. Automaton has 1123 states and 1644 transitions. Word has length 309 [2024-11-08 19:18:31,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 19:18:31,702 INFO L471 AbstractCegarLoop]: Abstraction has 1123 states and 1644 transitions. [2024-11-08 19:18:31,703 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 44.142857142857146) internal successors, (309), 7 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 19:18:31,703 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states and 1644 transitions. [2024-11-08 19:18:31,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2024-11-08 19:18:31,704 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 19:18:31,705 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 19:18:31,705 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-08 19:18:31,705 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 19:18:31,705 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 19:18:31,705 INFO L85 PathProgramCache]: Analyzing trace with hash 1252857537, now seen corresponding path program 1 times [2024-11-08 19:18:31,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 19:18:31,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946484700] [2024-11-08 19:18:31,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:18:31,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 19:18:34,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:18:37,379 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:18:37,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 19:18:37,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946484700] [2024-11-08 19:18:37,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946484700] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 19:18:37,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1320868029] [2024-11-08 19:18:37,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 19:18:37,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 19:18:37,380 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 19:18:37,381 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 19:18:37,382 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 19:18:38,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 19:18:38,791 INFO L255 TraceCheckSpWp]: Trace formula consists of 2524 conjuncts, 99 conjuncts are in the unsatisfiable core [2024-11-08 19:18:38,800 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 19:18:41,024 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 19:18:41,024 INFO L311 TraceCheckSpWp]: Computing backward predicates...