/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/seq-mthreaded/pals_STARTPALS_ActiveStandby.5.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 00:49:24,335 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 00:49:24,390 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-20 00:49:24,395 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 00:49:24,395 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 00:49:24,418 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 00:49:24,419 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 00:49:24,419 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 00:49:24,419 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 00:49:24,422 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 00:49:24,422 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 00:49:24,423 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 00:49:24,423 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 00:49:24,423 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 00:49:24,423 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 00:49:24,423 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 00:49:24,424 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 00:49:24,424 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 00:49:24,424 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 00:49:24,424 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 00:49:24,424 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 00:49:24,425 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 00:49:24,425 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 00:49:24,425 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 00:49:24,425 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 00:49:24,425 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 00:49:24,425 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 00:49:24,426 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 00:49:24,426 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 00:49:24,426 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 00:49:24,426 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 00:49:24,426 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 00:49:24,426 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 00:49:24,427 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 00:49:24,427 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 00:49:24,427 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 00:49:24,427 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 00:49:24,427 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 00:49:24,427 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 00:49:24,428 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 00:49:24,428 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 00:49:24,428 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 00:49:24,428 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 00:49:24,428 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-20 00:49:24,613 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 00:49:24,626 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 00:49:24,628 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 00:49:24,629 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 00:49:24,629 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 00:49:24,630 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_STARTPALS_ActiveStandby.5.ufo.UNBOUNDED.pals.c [2023-12-20 00:49:25,674 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 00:49:25,906 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 00:49:25,906 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_STARTPALS_ActiveStandby.5.ufo.UNBOUNDED.pals.c [2023-12-20 00:49:25,923 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/531ecbf08/6ecb2ee571e54932aa896f55fd47226d/FLAGa24200a37 [2023-12-20 00:49:25,937 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/531ecbf08/6ecb2ee571e54932aa896f55fd47226d [2023-12-20 00:49:25,939 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 00:49:25,940 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 00:49:25,942 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 00:49:25,942 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 00:49:25,945 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 00:49:25,945 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 12:49:25" (1/1) ... [2023-12-20 00:49:25,946 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61e406de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:49:25, skipping insertion in model container [2023-12-20 00:49:25,946 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 12:49:25" (1/1) ... [2023-12-20 00:49:25,981 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 00:49:26,173 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_STARTPALS_ActiveStandby.5.ufo.UNBOUNDED.pals.c[14577,14590] [2023-12-20 00:49:26,175 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 00:49:26,186 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 00:49:26,248 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_STARTPALS_ActiveStandby.5.ufo.UNBOUNDED.pals.c[14577,14590] [2023-12-20 00:49:26,249 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 00:49:26,259 INFO L206 MainTranslator]: Completed translation [2023-12-20 00:49:26,260 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:49:26 WrapperNode [2023-12-20 00:49:26,260 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 00:49:26,260 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 00:49:26,260 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 00:49:26,261 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 00:49:26,266 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:49:26" (1/1) ... [2023-12-20 00:49:26,278 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:49:26" (1/1) ... [2023-12-20 00:49:26,304 INFO L138 Inliner]: procedures = 32, calls = 47, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 498 [2023-12-20 00:49:26,305 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 00:49:26,305 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 00:49:26,305 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 00:49:26,305 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 00:49:26,313 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:49:26" (1/1) ... [2023-12-20 00:49:26,313 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:49:26" (1/1) ... [2023-12-20 00:49:26,316 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:49:26" (1/1) ... [2023-12-20 00:49:26,327 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]. [2023-12-20 00:49:26,327 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:49:26" (1/1) ... [2023-12-20 00:49:26,327 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:49:26" (1/1) ... [2023-12-20 00:49:26,335 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:49:26" (1/1) ... [2023-12-20 00:49:26,338 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:49:26" (1/1) ... [2023-12-20 00:49:26,340 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:49:26" (1/1) ... [2023-12-20 00:49:26,341 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:49:26" (1/1) ... [2023-12-20 00:49:26,344 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 00:49:26,344 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 00:49:26,345 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 00:49:26,345 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 00:49:26,345 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:49:26" (1/1) ... [2023-12-20 00:49:26,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 00:49:26,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 00:49:26,367 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) [2023-12-20 00:49:26,390 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 [2023-12-20 00:49:26,405 INFO L130 BoogieDeclarations]: Found specification of procedure read_manual_selection_history [2023-12-20 00:49:26,406 INFO L138 BoogieDeclarations]: Found implementation of procedure read_manual_selection_history [2023-12-20 00:49:26,406 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 00:49:26,406 INFO L130 BoogieDeclarations]: Found specification of procedure read_side2_failed_history [2023-12-20 00:49:26,406 INFO L138 BoogieDeclarations]: Found implementation of procedure read_side2_failed_history [2023-12-20 00:49:26,406 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-12-20 00:49:26,406 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2023-12-20 00:49:26,406 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-20 00:49:26,406 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-20 00:49:26,406 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 00:49:26,407 INFO L130 BoogieDeclarations]: Found specification of procedure read_side1_failed_history [2023-12-20 00:49:26,407 INFO L138 BoogieDeclarations]: Found implementation of procedure read_side1_failed_history [2023-12-20 00:49:26,407 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 00:49:26,407 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 00:49:26,407 INFO L130 BoogieDeclarations]: Found specification of procedure read_active_side_history [2023-12-20 00:49:26,407 INFO L138 BoogieDeclarations]: Found implementation of procedure read_active_side_history [2023-12-20 00:49:26,503 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 00:49:26,505 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 00:49:26,903 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 00:49:26,950 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 00:49:26,950 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-20 00:49:26,950 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 12:49:26 BoogieIcfgContainer [2023-12-20 00:49:26,950 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 00:49:26,952 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 00:49:26,952 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 00:49:26,954 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 00:49:26,954 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 12:49:25" (1/3) ... [2023-12-20 00:49:26,955 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fc1fe58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 12:49:26, skipping insertion in model container [2023-12-20 00:49:26,955 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 12:49:26" (2/3) ... [2023-12-20 00:49:26,955 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fc1fe58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 12:49:26, skipping insertion in model container [2023-12-20 00:49:26,955 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 12:49:26" (3/3) ... [2023-12-20 00:49:26,956 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_STARTPALS_ActiveStandby.5.ufo.UNBOUNDED.pals.c [2023-12-20 00:49:26,968 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 00:49:26,968 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-20 00:49:27,017 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 00:49:27,023 INFO L357 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, mHoare=true, 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;@57b77bd6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 00:49:27,024 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-20 00:49:27,029 INFO L276 IsEmpty]: Start isEmpty. Operand has 163 states, 126 states have (on average 1.6111111111111112) internal successors, (203), 128 states have internal predecessors, (203), 29 states have call successors, (29), 6 states have call predecessors, (29), 6 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2023-12-20 00:49:27,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-20 00:49:27,036 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:49:27,036 INFO L195 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] [2023-12-20 00:49:27,040 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:49:27,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:49:27,045 INFO L85 PathProgramCache]: Analyzing trace with hash 103658677, now seen corresponding path program 1 times [2023-12-20 00:49:27,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:49:27,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927249610] [2023-12-20 00:49:27,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:49:27,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:49:27,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:27,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-20 00:49:27,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:27,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 00:49:27,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:49:27,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927249610] [2023-12-20 00:49:27,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927249610] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:49:27,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:49:27,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-20 00:49:27,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050434038] [2023-12-20 00:49:27,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:49:27,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-20 00:49:27,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:49:27,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-20 00:49:27,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 00:49:27,287 INFO L87 Difference]: Start difference. First operand has 163 states, 126 states have (on average 1.6111111111111112) internal successors, (203), 128 states have internal predecessors, (203), 29 states have call successors, (29), 6 states have call predecessors, (29), 6 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) Second operand has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-20 00:49:27,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:49:27,345 INFO L93 Difference]: Finished difference Result 309 states and 522 transitions. [2023-12-20 00:49:27,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-20 00:49:27,348 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2023-12-20 00:49:27,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:49:27,354 INFO L225 Difference]: With dead ends: 309 [2023-12-20 00:49:27,354 INFO L226 Difference]: Without dead ends: 161 [2023-12-20 00:49:27,357 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-20 00:49:27,359 INFO L413 NwaCegarLoop]: 251 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 00:49:27,362 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 251 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 00:49:27,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2023-12-20 00:49:27,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2023-12-20 00:49:27,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 125 states have (on average 1.584) internal successors, (198), 126 states have internal predecessors, (198), 29 states have call successors, (29), 6 states have call predecessors, (29), 6 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2023-12-20 00:49:27,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 256 transitions. [2023-12-20 00:49:27,406 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 256 transitions. Word has length 23 [2023-12-20 00:49:27,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:49:27,407 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 256 transitions. [2023-12-20 00:49:27,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-20 00:49:27,407 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 256 transitions. [2023-12-20 00:49:27,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-20 00:49:27,408 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:49:27,408 INFO L195 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] [2023-12-20 00:49:27,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-20 00:49:27,408 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:49:27,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:49:27,409 INFO L85 PathProgramCache]: Analyzing trace with hash -1890486029, now seen corresponding path program 1 times [2023-12-20 00:49:27,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:49:27,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344521157] [2023-12-20 00:49:27,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:49:27,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:49:27,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:27,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-20 00:49:27,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:27,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 00:49:27,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:49:27,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344521157] [2023-12-20 00:49:27,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344521157] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:49:27,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:49:27,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 00:49:27,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35242424] [2023-12-20 00:49:27,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:49:27,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 00:49:27,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:49:27,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 00:49:27,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-20 00:49:27,579 INFO L87 Difference]: Start difference. First operand 161 states and 256 transitions. Second operand has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-20 00:49:27,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:49:27,709 INFO L93 Difference]: Finished difference Result 309 states and 487 transitions. [2023-12-20 00:49:27,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 00:49:27,714 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2023-12-20 00:49:27,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:49:27,717 INFO L225 Difference]: With dead ends: 309 [2023-12-20 00:49:27,717 INFO L226 Difference]: Without dead ends: 161 [2023-12-20 00:49:27,718 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-20 00:49:27,719 INFO L413 NwaCegarLoop]: 247 mSDtfsCounter, 130 mSDsluCounter, 820 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 1067 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 00:49:27,719 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 1067 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 00:49:27,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2023-12-20 00:49:27,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2023-12-20 00:49:27,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 125 states have (on average 1.488) internal successors, (186), 126 states have internal predecessors, (186), 29 states have call successors, (29), 6 states have call predecessors, (29), 6 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2023-12-20 00:49:27,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 244 transitions. [2023-12-20 00:49:27,735 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 244 transitions. Word has length 23 [2023-12-20 00:49:27,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:49:27,735 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 244 transitions. [2023-12-20 00:49:27,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-20 00:49:27,736 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 244 transitions. [2023-12-20 00:49:27,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-20 00:49:27,737 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:49:27,737 INFO L195 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] [2023-12-20 00:49:27,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-20 00:49:27,738 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:49:27,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:49:27,740 INFO L85 PathProgramCache]: Analyzing trace with hash 2080134839, now seen corresponding path program 1 times [2023-12-20 00:49:27,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:49:27,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766706560] [2023-12-20 00:49:27,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:49:27,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:49:27,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:27,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-20 00:49:27,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:27,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 00:49:27,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:49:27,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766706560] [2023-12-20 00:49:27,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766706560] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:49:27,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:49:27,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 00:49:27,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885627350] [2023-12-20 00:49:27,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:49:27,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 00:49:27,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:49:27,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 00:49:27,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 00:49:27,936 INFO L87 Difference]: Start difference. First operand 161 states and 244 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-20 00:49:28,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:49:28,009 INFO L93 Difference]: Finished difference Result 310 states and 479 transitions. [2023-12-20 00:49:28,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 00:49:28,010 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 34 [2023-12-20 00:49:28,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:49:28,011 INFO L225 Difference]: With dead ends: 310 [2023-12-20 00:49:28,011 INFO L226 Difference]: Without dead ends: 165 [2023-12-20 00:49:28,012 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 00:49:28,013 INFO L413 NwaCegarLoop]: 233 mSDtfsCounter, 5 mSDsluCounter, 456 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 689 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 00:49:28,013 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 689 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 00:49:28,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2023-12-20 00:49:28,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2023-12-20 00:49:28,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 128 states have (on average 1.4765625) internal successors, (189), 129 states have internal predecessors, (189), 29 states have call successors, (29), 7 states have call predecessors, (29), 7 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2023-12-20 00:49:28,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 247 transitions. [2023-12-20 00:49:28,025 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 247 transitions. Word has length 34 [2023-12-20 00:49:28,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:49:28,026 INFO L495 AbstractCegarLoop]: Abstraction has 165 states and 247 transitions. [2023-12-20 00:49:28,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-20 00:49:28,026 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 247 transitions. [2023-12-20 00:49:28,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-12-20 00:49:28,027 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:49:28,027 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 00:49:28,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-20 00:49:28,027 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:49:28,028 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:49:28,028 INFO L85 PathProgramCache]: Analyzing trace with hash 2074468601, now seen corresponding path program 1 times [2023-12-20 00:49:28,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:49:28,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636910447] [2023-12-20 00:49:28,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:49:28,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:49:28,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:28,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-20 00:49:28,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:28,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-20 00:49:28,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:28,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-20 00:49:28,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:28,081 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-20 00:49:28,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:49:28,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636910447] [2023-12-20 00:49:28,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636910447] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:49:28,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:49:28,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 00:49:28,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082452164] [2023-12-20 00:49:28,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:49:28,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 00:49:28,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:49:28,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 00:49:28,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 00:49:28,083 INFO L87 Difference]: Start difference. First operand 165 states and 247 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-20 00:49:28,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:49:28,120 INFO L93 Difference]: Finished difference Result 455 states and 692 transitions. [2023-12-20 00:49:28,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 00:49:28,121 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 48 [2023-12-20 00:49:28,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:49:28,123 INFO L225 Difference]: With dead ends: 455 [2023-12-20 00:49:28,123 INFO L226 Difference]: Without dead ends: 306 [2023-12-20 00:49:28,124 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 00:49:28,125 INFO L413 NwaCegarLoop]: 241 mSDtfsCounter, 205 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 474 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 00:49:28,125 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 474 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 00:49:28,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2023-12-20 00:49:28,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 303. [2023-12-20 00:49:28,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 231 states have (on average 1.4935064935064934) internal successors, (345), 233 states have internal predecessors, (345), 57 states have call successors, (57), 14 states have call predecessors, (57), 14 states have return successors, (57), 56 states have call predecessors, (57), 57 states have call successors, (57) [2023-12-20 00:49:28,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 459 transitions. [2023-12-20 00:49:28,147 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 459 transitions. Word has length 48 [2023-12-20 00:49:28,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:49:28,147 INFO L495 AbstractCegarLoop]: Abstraction has 303 states and 459 transitions. [2023-12-20 00:49:28,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-20 00:49:28,148 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 459 transitions. [2023-12-20 00:49:28,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-12-20 00:49:28,149 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:49:28,149 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 00:49:28,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-20 00:49:28,149 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:49:28,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:49:28,150 INFO L85 PathProgramCache]: Analyzing trace with hash 1204065463, now seen corresponding path program 1 times [2023-12-20 00:49:28,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:49:28,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22207768] [2023-12-20 00:49:28,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:49:28,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:49:28,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:28,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-20 00:49:28,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:28,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-20 00:49:28,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:28,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-20 00:49:28,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:28,208 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-20 00:49:28,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:49:28,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22207768] [2023-12-20 00:49:28,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22207768] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:49:28,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:49:28,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 00:49:28,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974735681] [2023-12-20 00:49:28,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:49:28,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 00:49:28,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:49:28,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 00:49:28,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 00:49:28,212 INFO L87 Difference]: Start difference. First operand 303 states and 459 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-20 00:49:28,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:49:28,285 INFO L93 Difference]: Finished difference Result 857 states and 1307 transitions. [2023-12-20 00:49:28,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 00:49:28,286 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 49 [2023-12-20 00:49:28,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:49:28,292 INFO L225 Difference]: With dead ends: 857 [2023-12-20 00:49:28,292 INFO L226 Difference]: Without dead ends: 570 [2023-12-20 00:49:28,293 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 00:49:28,294 INFO L413 NwaCegarLoop]: 254 mSDtfsCounter, 201 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 489 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 00:49:28,295 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 489 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 00:49:28,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2023-12-20 00:49:28,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 558. [2023-12-20 00:49:28,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 558 states, 416 states have (on average 1.4927884615384615) internal successors, (621), 420 states have internal predecessors, (621), 113 states have call successors, (113), 28 states have call predecessors, (113), 28 states have return successors, (113), 110 states have call predecessors, (113), 113 states have call successors, (113) [2023-12-20 00:49:28,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 847 transitions. [2023-12-20 00:49:28,352 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 847 transitions. Word has length 49 [2023-12-20 00:49:28,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:49:28,354 INFO L495 AbstractCegarLoop]: Abstraction has 558 states and 847 transitions. [2023-12-20 00:49:28,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-20 00:49:28,354 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 847 transitions. [2023-12-20 00:49:28,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-12-20 00:49:28,359 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:49:28,359 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 00:49:28,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-20 00:49:28,359 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:49:28,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:49:28,360 INFO L85 PathProgramCache]: Analyzing trace with hash -75798215, now seen corresponding path program 1 times [2023-12-20 00:49:28,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:49:28,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870167635] [2023-12-20 00:49:28,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:49:28,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:49:28,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:28,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-20 00:49:28,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:28,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-20 00:49:28,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:28,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-20 00:49:28,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:28,471 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-20 00:49:28,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:49:28,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870167635] [2023-12-20 00:49:28,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870167635] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:49:28,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:49:28,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 00:49:28,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350052055] [2023-12-20 00:49:28,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:49:28,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 00:49:28,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:49:28,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 00:49:28,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 00:49:28,473 INFO L87 Difference]: Start difference. First operand 558 states and 847 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-20 00:49:28,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:49:28,614 INFO L93 Difference]: Finished difference Result 1178 states and 1793 transitions. [2023-12-20 00:49:28,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 00:49:28,614 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 49 [2023-12-20 00:49:28,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:49:28,619 INFO L225 Difference]: With dead ends: 1178 [2023-12-20 00:49:28,619 INFO L226 Difference]: Without dead ends: 636 [2023-12-20 00:49:28,621 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-20 00:49:28,622 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 332 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 616 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 00:49:28,624 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [332 Valid, 616 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 00:49:28,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 636 states. [2023-12-20 00:49:28,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 636 to 628. [2023-12-20 00:49:28,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 628 states, 478 states have (on average 1.4832635983263598) internal successors, (709), 481 states have internal predecessors, (709), 117 states have call successors, (117), 32 states have call predecessors, (117), 32 states have return successors, (117), 114 states have call predecessors, (117), 117 states have call successors, (117) [2023-12-20 00:49:28,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 943 transitions. [2023-12-20 00:49:28,670 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 943 transitions. Word has length 49 [2023-12-20 00:49:28,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:49:28,671 INFO L495 AbstractCegarLoop]: Abstraction has 628 states and 943 transitions. [2023-12-20 00:49:28,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-20 00:49:28,671 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 943 transitions. [2023-12-20 00:49:28,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-20 00:49:28,673 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:49:28,673 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 00:49:28,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-20 00:49:28,674 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:49:28,674 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:49:28,674 INFO L85 PathProgramCache]: Analyzing trace with hash -1717692240, now seen corresponding path program 1 times [2023-12-20 00:49:28,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:49:28,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089719831] [2023-12-20 00:49:28,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:49:28,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:49:28,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:28,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-20 00:49:28,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:28,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-20 00:49:28,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:28,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-20 00:49:28,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:28,799 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-20 00:49:28,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:49:28,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089719831] [2023-12-20 00:49:28,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089719831] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:49:28,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:49:28,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 00:49:28,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553009869] [2023-12-20 00:49:28,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:49:28,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 00:49:28,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:49:28,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 00:49:28,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 00:49:28,801 INFO L87 Difference]: Start difference. First operand 628 states and 943 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-20 00:49:28,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:49:28,924 INFO L93 Difference]: Finished difference Result 1182 states and 1793 transitions. [2023-12-20 00:49:28,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 00:49:28,925 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 50 [2023-12-20 00:49:28,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:49:28,927 INFO L225 Difference]: With dead ends: 1182 [2023-12-20 00:49:28,927 INFO L226 Difference]: Without dead ends: 640 [2023-12-20 00:49:28,930 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-20 00:49:28,932 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 329 mSDsluCounter, 409 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 618 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 00:49:28,932 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [329 Valid, 618 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 00:49:28,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 640 states. [2023-12-20 00:49:28,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 640 to 636. [2023-12-20 00:49:28,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 636 states, 486 states have (on average 1.4753086419753085) internal successors, (717), 489 states have internal predecessors, (717), 117 states have call successors, (117), 32 states have call predecessors, (117), 32 states have return successors, (117), 114 states have call predecessors, (117), 117 states have call successors, (117) [2023-12-20 00:49:28,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 636 states to 636 states and 951 transitions. [2023-12-20 00:49:28,972 INFO L78 Accepts]: Start accepts. Automaton has 636 states and 951 transitions. Word has length 50 [2023-12-20 00:49:28,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:49:28,974 INFO L495 AbstractCegarLoop]: Abstraction has 636 states and 951 transitions. [2023-12-20 00:49:28,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-20 00:49:28,974 INFO L276 IsEmpty]: Start isEmpty. Operand 636 states and 951 transitions. [2023-12-20 00:49:28,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-12-20 00:49:28,975 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:49:28,975 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 00:49:28,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-20 00:49:28,975 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:49:28,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:49:28,975 INFO L85 PathProgramCache]: Analyzing trace with hash 1754746402, now seen corresponding path program 1 times [2023-12-20 00:49:28,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:49:28,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018886933] [2023-12-20 00:49:28,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:49:28,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:49:29,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:29,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-20 00:49:29,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:29,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-20 00:49:29,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:29,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-20 00:49:29,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:29,051 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-20 00:49:29,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:49:29,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018886933] [2023-12-20 00:49:29,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018886933] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:49:29,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:49:29,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 00:49:29,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698346546] [2023-12-20 00:49:29,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:49:29,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 00:49:29,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:49:29,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 00:49:29,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 00:49:29,052 INFO L87 Difference]: Start difference. First operand 636 states and 951 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-20 00:49:29,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:49:29,149 INFO L93 Difference]: Finished difference Result 1182 states and 1785 transitions. [2023-12-20 00:49:29,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 00:49:29,149 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 52 [2023-12-20 00:49:29,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:49:29,152 INFO L225 Difference]: With dead ends: 1182 [2023-12-20 00:49:29,152 INFO L226 Difference]: Without dead ends: 640 [2023-12-20 00:49:29,153 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 00:49:29,154 INFO L413 NwaCegarLoop]: 210 mSDtfsCounter, 52 mSDsluCounter, 405 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 615 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 00:49:29,154 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 615 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 00:49:29,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 640 states. [2023-12-20 00:49:29,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 640 to 636. [2023-12-20 00:49:29,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 636 states, 486 states have (on average 1.4670781893004115) internal successors, (713), 489 states have internal predecessors, (713), 117 states have call successors, (117), 32 states have call predecessors, (117), 32 states have return successors, (117), 114 states have call predecessors, (117), 117 states have call successors, (117) [2023-12-20 00:49:29,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 636 states to 636 states and 947 transitions. [2023-12-20 00:49:29,184 INFO L78 Accepts]: Start accepts. Automaton has 636 states and 947 transitions. Word has length 52 [2023-12-20 00:49:29,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:49:29,184 INFO L495 AbstractCegarLoop]: Abstraction has 636 states and 947 transitions. [2023-12-20 00:49:29,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-20 00:49:29,184 INFO L276 IsEmpty]: Start isEmpty. Operand 636 states and 947 transitions. [2023-12-20 00:49:29,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-20 00:49:29,185 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:49:29,185 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 00:49:29,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-20 00:49:29,185 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:49:29,186 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:49:29,186 INFO L85 PathProgramCache]: Analyzing trace with hash -1411355129, now seen corresponding path program 1 times [2023-12-20 00:49:29,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:49:29,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776461317] [2023-12-20 00:49:29,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:49:29,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:49:29,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:29,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-20 00:49:29,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:29,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-20 00:49:29,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:29,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-12-20 00:49:29,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:29,318 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-20 00:49:29,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:49:29,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776461317] [2023-12-20 00:49:29,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776461317] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:49:29,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:49:29,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 00:49:29,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3016111] [2023-12-20 00:49:29,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:49:29,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 00:49:29,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:49:29,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 00:49:29,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 00:49:29,320 INFO L87 Difference]: Start difference. First operand 636 states and 947 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-20 00:49:29,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:49:29,400 INFO L93 Difference]: Finished difference Result 1198 states and 1805 transitions. [2023-12-20 00:49:29,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 00:49:29,400 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 53 [2023-12-20 00:49:29,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:49:29,404 INFO L225 Difference]: With dead ends: 1198 [2023-12-20 00:49:29,404 INFO L226 Difference]: Without dead ends: 656 [2023-12-20 00:49:29,405 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 00:49:29,406 INFO L413 NwaCegarLoop]: 235 mSDtfsCounter, 6 mSDsluCounter, 466 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 701 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 00:49:29,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 701 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 00:49:29,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 656 states. [2023-12-20 00:49:29,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 656 to 656. [2023-12-20 00:49:29,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 656 states, 502 states have (on average 1.452191235059761) internal successors, (729), 505 states have internal predecessors, (729), 117 states have call successors, (117), 36 states have call predecessors, (117), 36 states have return successors, (117), 114 states have call predecessors, (117), 117 states have call successors, (117) [2023-12-20 00:49:29,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 656 states to 656 states and 963 transitions. [2023-12-20 00:49:29,442 INFO L78 Accepts]: Start accepts. Automaton has 656 states and 963 transitions. Word has length 53 [2023-12-20 00:49:29,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:49:29,442 INFO L495 AbstractCegarLoop]: Abstraction has 656 states and 963 transitions. [2023-12-20 00:49:29,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-20 00:49:29,442 INFO L276 IsEmpty]: Start isEmpty. Operand 656 states and 963 transitions. [2023-12-20 00:49:29,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-20 00:49:29,443 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:49:29,443 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 00:49:29,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-20 00:49:29,443 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:49:29,444 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:49:29,444 INFO L85 PathProgramCache]: Analyzing trace with hash 1026075629, now seen corresponding path program 1 times [2023-12-20 00:49:29,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:49:29,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214528427] [2023-12-20 00:49:29,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:49:29,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:49:29,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:29,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-20 00:49:29,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:29,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-20 00:49:29,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:29,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-12-20 00:49:29,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:29,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-20 00:49:29,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:29,582 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-20 00:49:29,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:49:29,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214528427] [2023-12-20 00:49:29,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214528427] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:49:29,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:49:29,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 00:49:29,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551505624] [2023-12-20 00:49:29,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:49:29,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 00:49:29,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:49:29,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 00:49:29,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 00:49:29,584 INFO L87 Difference]: Start difference. First operand 656 states and 963 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-20 00:49:29,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:49:29,651 INFO L93 Difference]: Finished difference Result 1238 states and 1849 transitions. [2023-12-20 00:49:29,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 00:49:29,651 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 61 [2023-12-20 00:49:29,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:49:29,654 INFO L225 Difference]: With dead ends: 1238 [2023-12-20 00:49:29,654 INFO L226 Difference]: Without dead ends: 676 [2023-12-20 00:49:29,657 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 00:49:29,657 INFO L413 NwaCegarLoop]: 232 mSDtfsCounter, 6 mSDsluCounter, 455 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 687 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 00:49:29,658 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 687 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 00:49:29,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 676 states. [2023-12-20 00:49:29,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 676 to 676. [2023-12-20 00:49:29,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 676 states, 518 states have (on average 1.4382239382239381) internal successors, (745), 521 states have internal predecessors, (745), 117 states have call successors, (117), 40 states have call predecessors, (117), 40 states have return successors, (117), 114 states have call predecessors, (117), 117 states have call successors, (117) [2023-12-20 00:49:29,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 676 states to 676 states and 979 transitions. [2023-12-20 00:49:29,688 INFO L78 Accepts]: Start accepts. Automaton has 676 states and 979 transitions. Word has length 61 [2023-12-20 00:49:29,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:49:29,689 INFO L495 AbstractCegarLoop]: Abstraction has 676 states and 979 transitions. [2023-12-20 00:49:29,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-20 00:49:29,689 INFO L276 IsEmpty]: Start isEmpty. Operand 676 states and 979 transitions. [2023-12-20 00:49:29,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-12-20 00:49:29,690 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:49:29,690 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 00:49:29,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-20 00:49:29,690 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:49:29,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:49:29,691 INFO L85 PathProgramCache]: Analyzing trace with hash 1366026871, now seen corresponding path program 1 times [2023-12-20 00:49:29,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:49:29,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417540837] [2023-12-20 00:49:29,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:49:29,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:49:29,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:29,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-20 00:49:29,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:29,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-20 00:49:29,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:29,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-12-20 00:49:29,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:29,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-20 00:49:29,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:29,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-20 00:49:29,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:29,797 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-20 00:49:29,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:49:29,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417540837] [2023-12-20 00:49:29,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417540837] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:49:29,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:49:29,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 00:49:29,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922978828] [2023-12-20 00:49:29,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:49:29,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 00:49:29,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:49:29,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 00:49:29,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 00:49:29,799 INFO L87 Difference]: Start difference. First operand 676 states and 979 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-20 00:49:29,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:49:29,856 INFO L93 Difference]: Finished difference Result 1274 states and 1865 transitions. [2023-12-20 00:49:29,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 00:49:29,857 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 69 [2023-12-20 00:49:29,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:49:29,860 INFO L225 Difference]: With dead ends: 1274 [2023-12-20 00:49:29,860 INFO L226 Difference]: Without dead ends: 692 [2023-12-20 00:49:29,861 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 00:49:29,862 INFO L413 NwaCegarLoop]: 237 mSDtfsCounter, 5 mSDsluCounter, 459 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 696 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 00:49:29,862 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 696 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 00:49:29,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 692 states. [2023-12-20 00:49:29,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 692 to 692. [2023-12-20 00:49:29,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 692 states, 530 states have (on average 1.4283018867924528) internal successors, (757), 533 states have internal predecessors, (757), 117 states have call successors, (117), 44 states have call predecessors, (117), 44 states have return successors, (117), 114 states have call predecessors, (117), 117 states have call successors, (117) [2023-12-20 00:49:29,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 991 transitions. [2023-12-20 00:49:29,894 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 991 transitions. Word has length 69 [2023-12-20 00:49:29,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:49:29,894 INFO L495 AbstractCegarLoop]: Abstraction has 692 states and 991 transitions. [2023-12-20 00:49:29,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-20 00:49:29,894 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 991 transitions. [2023-12-20 00:49:29,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-12-20 00:49:29,895 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:49:29,895 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 00:49:29,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-20 00:49:29,895 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:49:29,896 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:49:29,896 INFO L85 PathProgramCache]: Analyzing trace with hash -532481122, now seen corresponding path program 1 times [2023-12-20 00:49:29,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:49:29,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565792970] [2023-12-20 00:49:29,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:49:29,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:49:29,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:30,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-20 00:49:30,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:30,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-20 00:49:30,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:30,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-12-20 00:49:30,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:30,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-20 00:49:30,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:30,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-20 00:49:30,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:30,026 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-20 00:49:30,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:49:30,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565792970] [2023-12-20 00:49:30,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565792970] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:49:30,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:49:30,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 00:49:30,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878438825] [2023-12-20 00:49:30,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:49:30,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 00:49:30,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:49:30,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 00:49:30,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 00:49:30,028 INFO L87 Difference]: Start difference. First operand 692 states and 991 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-20 00:49:30,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:49:30,094 INFO L93 Difference]: Finished difference Result 1310 states and 1905 transitions. [2023-12-20 00:49:30,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 00:49:30,095 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 69 [2023-12-20 00:49:30,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:49:30,097 INFO L225 Difference]: With dead ends: 1310 [2023-12-20 00:49:30,097 INFO L226 Difference]: Without dead ends: 712 [2023-12-20 00:49:30,099 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 00:49:30,099 INFO L413 NwaCegarLoop]: 232 mSDtfsCounter, 6 mSDsluCounter, 455 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 687 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 00:49:30,099 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 687 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 00:49:30,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 712 states. [2023-12-20 00:49:30,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 712 to 712. [2023-12-20 00:49:30,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 712 states, 546 states have (on average 1.4157509157509158) internal successors, (773), 549 states have internal predecessors, (773), 117 states have call successors, (117), 48 states have call predecessors, (117), 48 states have return successors, (117), 114 states have call predecessors, (117), 117 states have call successors, (117) [2023-12-20 00:49:30,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 712 states to 712 states and 1007 transitions. [2023-12-20 00:49:30,129 INFO L78 Accepts]: Start accepts. Automaton has 712 states and 1007 transitions. Word has length 69 [2023-12-20 00:49:30,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:49:30,129 INFO L495 AbstractCegarLoop]: Abstraction has 712 states and 1007 transitions. [2023-12-20 00:49:30,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-12-20 00:49:30,129 INFO L276 IsEmpty]: Start isEmpty. Operand 712 states and 1007 transitions. [2023-12-20 00:49:30,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-20 00:49:30,131 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:49:30,131 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 00:49:30,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-20 00:49:30,131 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:49:30,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:49:30,132 INFO L85 PathProgramCache]: Analyzing trace with hash -109947134, now seen corresponding path program 1 times [2023-12-20 00:49:30,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:49:30,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829660927] [2023-12-20 00:49:30,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:49:30,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:49:30,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:30,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-20 00:49:30,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:30,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-20 00:49:30,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:30,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-12-20 00:49:30,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:30,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-20 00:49:30,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:30,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-20 00:49:30,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:30,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-12-20 00:49:30,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:30,255 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-20 00:49:30,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:49:30,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829660927] [2023-12-20 00:49:30,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829660927] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:49:30,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:49:30,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 00:49:30,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861168722] [2023-12-20 00:49:30,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:49:30,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 00:49:30,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:49:30,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 00:49:30,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 00:49:30,257 INFO L87 Difference]: Start difference. First operand 712 states and 1007 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-12-20 00:49:30,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:49:30,312 INFO L93 Difference]: Finished difference Result 1354 states and 1933 transitions. [2023-12-20 00:49:30,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 00:49:30,312 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 77 [2023-12-20 00:49:30,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:49:30,316 INFO L225 Difference]: With dead ends: 1354 [2023-12-20 00:49:30,316 INFO L226 Difference]: Without dead ends: 736 [2023-12-20 00:49:30,317 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 00:49:30,318 INFO L413 NwaCegarLoop]: 236 mSDtfsCounter, 7 mSDsluCounter, 462 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 698 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 00:49:30,318 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 698 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 00:49:30,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 736 states. [2023-12-20 00:49:30,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 736 to 736. [2023-12-20 00:49:30,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 736 states, 566 states have (on average 1.401060070671378) internal successors, (793), 569 states have internal predecessors, (793), 117 states have call successors, (117), 52 states have call predecessors, (117), 52 states have return successors, (117), 114 states have call predecessors, (117), 117 states have call successors, (117) [2023-12-20 00:49:30,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 736 states to 736 states and 1027 transitions. [2023-12-20 00:49:30,350 INFO L78 Accepts]: Start accepts. Automaton has 736 states and 1027 transitions. Word has length 77 [2023-12-20 00:49:30,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:49:30,350 INFO L495 AbstractCegarLoop]: Abstraction has 736 states and 1027 transitions. [2023-12-20 00:49:30,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-12-20 00:49:30,350 INFO L276 IsEmpty]: Start isEmpty. Operand 736 states and 1027 transitions. [2023-12-20 00:49:30,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-20 00:49:30,351 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:49:30,351 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 00:49:30,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-20 00:49:30,352 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:49:30,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:49:30,352 INFO L85 PathProgramCache]: Analyzing trace with hash 1880226315, now seen corresponding path program 1 times [2023-12-20 00:49:30,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:49:30,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263121974] [2023-12-20 00:49:30,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:49:30,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:49:30,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:30,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-20 00:49:30,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:30,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-20 00:49:30,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:30,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-12-20 00:49:30,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:30,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-20 00:49:30,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:30,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-20 00:49:30,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:30,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-12-20 00:49:30,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:30,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-20 00:49:30,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:30,560 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-20 00:49:30,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:49:30,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263121974] [2023-12-20 00:49:30,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263121974] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:49:30,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:49:30,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 00:49:30,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017315141] [2023-12-20 00:49:30,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:49:30,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 00:49:30,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:49:30,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 00:49:30,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 00:49:30,562 INFO L87 Difference]: Start difference. First operand 736 states and 1027 transitions. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 6 states have internal predecessors, (59), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-20 00:49:30,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:49:30,812 INFO L93 Difference]: Finished difference Result 2083 states and 2923 transitions. [2023-12-20 00:49:30,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-20 00:49:30,813 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 6 states have internal predecessors, (59), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) Word has length 80 [2023-12-20 00:49:30,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:49:30,819 INFO L225 Difference]: With dead ends: 2083 [2023-12-20 00:49:30,819 INFO L226 Difference]: Without dead ends: 1441 [2023-12-20 00:49:30,820 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-12-20 00:49:30,820 INFO L413 NwaCegarLoop]: 225 mSDtfsCounter, 250 mSDsluCounter, 1091 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 1316 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 00:49:30,821 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [264 Valid, 1316 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 00:49:30,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1441 states. [2023-12-20 00:49:30,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1441 to 881. [2023-12-20 00:49:30,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 881 states, 674 states have (on average 1.3916913946587537) internal successors, (938), 678 states have internal predecessors, (938), 141 states have call successors, (141), 65 states have call predecessors, (141), 65 states have return successors, (141), 137 states have call predecessors, (141), 141 states have call successors, (141) [2023-12-20 00:49:30,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 881 states to 881 states and 1220 transitions. [2023-12-20 00:49:30,877 INFO L78 Accepts]: Start accepts. Automaton has 881 states and 1220 transitions. Word has length 80 [2023-12-20 00:49:30,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:49:30,877 INFO L495 AbstractCegarLoop]: Abstraction has 881 states and 1220 transitions. [2023-12-20 00:49:30,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 6 states have internal predecessors, (59), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2023-12-20 00:49:30,877 INFO L276 IsEmpty]: Start isEmpty. Operand 881 states and 1220 transitions. [2023-12-20 00:49:30,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-12-20 00:49:30,878 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:49:30,878 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 00:49:30,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-20 00:49:30,878 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:49:30,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:49:30,878 INFO L85 PathProgramCache]: Analyzing trace with hash 392030714, now seen corresponding path program 1 times [2023-12-20 00:49:30,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:49:30,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128406254] [2023-12-20 00:49:30,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:49:30,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:49:30,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:30,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-20 00:49:30,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:30,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-20 00:49:30,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:30,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-12-20 00:49:30,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:30,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-20 00:49:30,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:30,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-20 00:49:30,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:30,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-12-20 00:49:30,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:30,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-12-20 00:49:30,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:30,969 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-20 00:49:30,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:49:30,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128406254] [2023-12-20 00:49:30,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128406254] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:49:30,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:49:30,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 00:49:30,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082312908] [2023-12-20 00:49:30,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:49:30,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 00:49:30,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:49:30,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 00:49:30,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 00:49:30,970 INFO L87 Difference]: Start difference. First operand 881 states and 1220 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-12-20 00:49:31,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:49:31,038 INFO L93 Difference]: Finished difference Result 1651 states and 2305 transitions. [2023-12-20 00:49:31,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 00:49:31,038 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 84 [2023-12-20 00:49:31,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:49:31,042 INFO L225 Difference]: With dead ends: 1651 [2023-12-20 00:49:31,042 INFO L226 Difference]: Without dead ends: 901 [2023-12-20 00:49:31,045 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 00:49:31,045 INFO L413 NwaCegarLoop]: 237 mSDtfsCounter, 5 mSDsluCounter, 459 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 696 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 00:49:31,046 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 696 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 00:49:31,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 901 states. [2023-12-20 00:49:31,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 901 to 901. [2023-12-20 00:49:31,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 901 states, 689 states have (on average 1.3831640058055152) internal successors, (953), 693 states have internal predecessors, (953), 141 states have call successors, (141), 70 states have call predecessors, (141), 70 states have return successors, (141), 137 states have call predecessors, (141), 141 states have call successors, (141) [2023-12-20 00:49:31,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 901 states to 901 states and 1235 transitions. [2023-12-20 00:49:31,094 INFO L78 Accepts]: Start accepts. Automaton has 901 states and 1235 transitions. Word has length 84 [2023-12-20 00:49:31,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:49:31,095 INFO L495 AbstractCegarLoop]: Abstraction has 901 states and 1235 transitions. [2023-12-20 00:49:31,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-12-20 00:49:31,095 INFO L276 IsEmpty]: Start isEmpty. Operand 901 states and 1235 transitions. [2023-12-20 00:49:31,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-12-20 00:49:31,096 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:49:31,096 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 00:49:31,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-20 00:49:31,096 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:49:31,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:49:31,097 INFO L85 PathProgramCache]: Analyzing trace with hash -954874953, now seen corresponding path program 1 times [2023-12-20 00:49:31,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:49:31,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638509682] [2023-12-20 00:49:31,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:49:31,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:49:31,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:31,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-20 00:49:31,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:31,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-20 00:49:31,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:31,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-12-20 00:49:31,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:31,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-20 00:49:31,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:31,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-20 00:49:31,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:31,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-12-20 00:49:31,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:31,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-20 00:49:31,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:31,242 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-12-20 00:49:31,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:49:31,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638509682] [2023-12-20 00:49:31,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638509682] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:49:31,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:49:31,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 00:49:31,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517750222] [2023-12-20 00:49:31,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:49:31,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 00:49:31,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:49:31,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 00:49:31,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-20 00:49:31,245 INFO L87 Difference]: Start difference. First operand 901 states and 1235 transitions. Second operand has 6 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-12-20 00:49:31,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:49:31,382 INFO L93 Difference]: Finished difference Result 1297 states and 1880 transitions. [2023-12-20 00:49:31,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 00:49:31,383 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 83 [2023-12-20 00:49:31,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:49:31,387 INFO L225 Difference]: With dead ends: 1297 [2023-12-20 00:49:31,387 INFO L226 Difference]: Without dead ends: 1295 [2023-12-20 00:49:31,388 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-20 00:49:31,388 INFO L413 NwaCegarLoop]: 410 mSDtfsCounter, 179 mSDsluCounter, 1416 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 1826 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 00:49:31,388 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 1826 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 00:49:31,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1295 states. [2023-12-20 00:49:31,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1295 to 903. [2023-12-20 00:49:31,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 903 states, 689 states have (on average 1.3831640058055152) internal successors, (953), 694 states have internal predecessors, (953), 142 states have call successors, (142), 71 states have call predecessors, (142), 71 states have return successors, (142), 137 states have call predecessors, (142), 142 states have call successors, (142) [2023-12-20 00:49:31,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 903 states to 903 states and 1237 transitions. [2023-12-20 00:49:31,440 INFO L78 Accepts]: Start accepts. Automaton has 903 states and 1237 transitions. Word has length 83 [2023-12-20 00:49:31,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:49:31,441 INFO L495 AbstractCegarLoop]: Abstraction has 903 states and 1237 transitions. [2023-12-20 00:49:31,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-12-20 00:49:31,441 INFO L276 IsEmpty]: Start isEmpty. Operand 903 states and 1237 transitions. [2023-12-20 00:49:31,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-20 00:49:31,441 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:49:31,442 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 00:49:31,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-20 00:49:31,442 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:49:31,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:49:31,442 INFO L85 PathProgramCache]: Analyzing trace with hash -2029276846, now seen corresponding path program 1 times [2023-12-20 00:49:31,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:49:31,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696247726] [2023-12-20 00:49:31,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:49:31,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:49:31,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:31,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-20 00:49:31,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:31,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-20 00:49:31,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:31,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-12-20 00:49:31,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:31,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-20 00:49:31,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:31,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-20 00:49:31,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:31,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-12-20 00:49:31,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:31,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-20 00:49:31,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:31,528 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-20 00:49:31,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:49:31,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696247726] [2023-12-20 00:49:31,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696247726] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:49:31,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:49:31,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 00:49:31,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187523024] [2023-12-20 00:49:31,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:49:31,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 00:49:31,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:49:31,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 00:49:31,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 00:49:31,529 INFO L87 Difference]: Start difference. First operand 903 states and 1237 transitions. Second operand has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-20 00:49:31,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:49:31,663 INFO L93 Difference]: Finished difference Result 1689 states and 2330 transitions. [2023-12-20 00:49:31,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-20 00:49:31,663 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 86 [2023-12-20 00:49:31,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:49:31,666 INFO L225 Difference]: With dead ends: 1689 [2023-12-20 00:49:31,667 INFO L226 Difference]: Without dead ends: 958 [2023-12-20 00:49:31,668 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-12-20 00:49:31,668 INFO L413 NwaCegarLoop]: 239 mSDtfsCounter, 228 mSDsluCounter, 1136 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 1375 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 00:49:31,669 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 1375 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 00:49:31,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 958 states. [2023-12-20 00:49:31,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 958 to 914. [2023-12-20 00:49:31,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 914 states, 705 states have (on average 1.3815602836879433) internal successors, (974), 714 states have internal predecessors, (974), 136 states have call successors, (136), 72 states have call predecessors, (136), 72 states have return successors, (136), 127 states have call predecessors, (136), 136 states have call successors, (136) [2023-12-20 00:49:31,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 914 states to 914 states and 1246 transitions. [2023-12-20 00:49:31,713 INFO L78 Accepts]: Start accepts. Automaton has 914 states and 1246 transitions. Word has length 86 [2023-12-20 00:49:31,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:49:31,713 INFO L495 AbstractCegarLoop]: Abstraction has 914 states and 1246 transitions. [2023-12-20 00:49:31,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-20 00:49:31,713 INFO L276 IsEmpty]: Start isEmpty. Operand 914 states and 1246 transitions. [2023-12-20 00:49:31,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-20 00:49:31,714 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:49:31,714 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 00:49:31,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-20 00:49:31,714 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:49:31,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:49:31,715 INFO L85 PathProgramCache]: Analyzing trace with hash -847343983, now seen corresponding path program 1 times [2023-12-20 00:49:31,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:49:31,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583447937] [2023-12-20 00:49:31,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:49:31,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:49:31,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:31,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-20 00:49:31,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:31,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-20 00:49:31,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:31,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-12-20 00:49:31,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:31,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-20 00:49:31,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:31,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-20 00:49:31,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:31,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-12-20 00:49:31,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:31,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-20 00:49:31,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:31,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-20 00:49:31,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:31,877 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-12-20 00:49:31,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:49:31,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583447937] [2023-12-20 00:49:31,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583447937] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:49:31,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:49:31,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 00:49:31,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376929891] [2023-12-20 00:49:31,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:49:31,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 00:49:31,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:49:31,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 00:49:31,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 00:49:31,879 INFO L87 Difference]: Start difference. First operand 914 states and 1246 transitions. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 6 states have internal predecessors, (61), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-20 00:49:32,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:49:32,038 INFO L93 Difference]: Finished difference Result 1760 states and 2434 transitions. [2023-12-20 00:49:32,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-20 00:49:32,039 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 6 states have internal predecessors, (61), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 88 [2023-12-20 00:49:32,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:49:32,043 INFO L225 Difference]: With dead ends: 1760 [2023-12-20 00:49:32,043 INFO L226 Difference]: Without dead ends: 1008 [2023-12-20 00:49:32,044 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-12-20 00:49:32,045 INFO L413 NwaCegarLoop]: 273 mSDtfsCounter, 174 mSDsluCounter, 1265 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 1538 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 00:49:32,045 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 1538 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 00:49:32,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1008 states. [2023-12-20 00:49:32,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1008 to 903. [2023-12-20 00:49:32,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 903 states, 697 states have (on average 1.3802008608321377) internal successors, (962), 706 states have internal predecessors, (962), 134 states have call successors, (134), 71 states have call predecessors, (134), 71 states have return successors, (134), 125 states have call predecessors, (134), 134 states have call successors, (134) [2023-12-20 00:49:32,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 903 states to 903 states and 1230 transitions. [2023-12-20 00:49:32,105 INFO L78 Accepts]: Start accepts. Automaton has 903 states and 1230 transitions. Word has length 88 [2023-12-20 00:49:32,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:49:32,105 INFO L495 AbstractCegarLoop]: Abstraction has 903 states and 1230 transitions. [2023-12-20 00:49:32,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 6 states have internal predecessors, (61), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-20 00:49:32,106 INFO L276 IsEmpty]: Start isEmpty. Operand 903 states and 1230 transitions. [2023-12-20 00:49:32,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-12-20 00:49:32,106 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:49:32,107 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 00:49:32,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-20 00:49:32,107 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:49:32,107 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:49:32,107 INFO L85 PathProgramCache]: Analyzing trace with hash -1883504194, now seen corresponding path program 1 times [2023-12-20 00:49:32,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:49:32,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140811031] [2023-12-20 00:49:32,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:49:32,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:49:32,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:32,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-20 00:49:32,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:32,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-20 00:49:32,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:32,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-12-20 00:49:32,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:32,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-20 00:49:32,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:32,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-20 00:49:32,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:32,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-12-20 00:49:32,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:32,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-12-20 00:49:32,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:32,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-12-20 00:49:32,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:32,263 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-20 00:49:32,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:49:32,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140811031] [2023-12-20 00:49:32,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140811031] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:49:32,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:49:32,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-20 00:49:32,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309907735] [2023-12-20 00:49:32,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:49:32,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-20 00:49:32,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:49:32,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-20 00:49:32,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-12-20 00:49:32,265 INFO L87 Difference]: Start difference. First operand 903 states and 1230 transitions. Second operand has 8 states, 8 states have (on average 8.25) internal successors, (66), 7 states have internal predecessors, (66), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-20 00:49:32,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:49:32,638 INFO L93 Difference]: Finished difference Result 1952 states and 2700 transitions. [2023-12-20 00:49:32,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-20 00:49:32,638 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.25) internal successors, (66), 7 states have internal predecessors, (66), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) Word has length 89 [2023-12-20 00:49:32,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:49:32,642 INFO L225 Difference]: With dead ends: 1952 [2023-12-20 00:49:32,643 INFO L226 Difference]: Without dead ends: 1180 [2023-12-20 00:49:32,644 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2023-12-20 00:49:32,644 INFO L413 NwaCegarLoop]: 313 mSDtfsCounter, 612 mSDsluCounter, 1050 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 618 SdHoareTripleChecker+Valid, 1363 SdHoareTripleChecker+Invalid, 375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-20 00:49:32,644 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [618 Valid, 1363 Invalid, 375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-20 00:49:32,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1180 states. [2023-12-20 00:49:32,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1180 to 919. [2023-12-20 00:49:32,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 919 states, 705 states have (on average 1.3546099290780143) internal successors, (955), 715 states have internal predecessors, (955), 137 states have call successors, (137), 76 states have call predecessors, (137), 76 states have return successors, (137), 127 states have call predecessors, (137), 137 states have call successors, (137) [2023-12-20 00:49:32,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 919 states to 919 states and 1229 transitions. [2023-12-20 00:49:32,704 INFO L78 Accepts]: Start accepts. Automaton has 919 states and 1229 transitions. Word has length 89 [2023-12-20 00:49:32,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:49:32,704 INFO L495 AbstractCegarLoop]: Abstraction has 919 states and 1229 transitions. [2023-12-20 00:49:32,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.25) internal successors, (66), 7 states have internal predecessors, (66), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2023-12-20 00:49:32,705 INFO L276 IsEmpty]: Start isEmpty. Operand 919 states and 1229 transitions. [2023-12-20 00:49:32,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-20 00:49:32,705 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:49:32,705 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 00:49:32,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-20 00:49:32,706 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:49:32,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:49:32,706 INFO L85 PathProgramCache]: Analyzing trace with hash 54876287, now seen corresponding path program 1 times [2023-12-20 00:49:32,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:49:32,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799775671] [2023-12-20 00:49:32,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:49:32,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:49:32,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:32,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-20 00:49:32,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:32,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-20 00:49:32,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:32,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-20 00:49:32,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:32,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-20 00:49:32,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:32,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-20 00:49:32,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:32,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-20 00:49:32,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:32,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-20 00:49:32,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:32,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-20 00:49:32,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:32,791 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-20 00:49:32,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:49:32,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799775671] [2023-12-20 00:49:32,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799775671] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:49:32,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:49:32,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 00:49:32,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143713122] [2023-12-20 00:49:32,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:49:32,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 00:49:32,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:49:32,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 00:49:32,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 00:49:32,793 INFO L87 Difference]: Start difference. First operand 919 states and 1229 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-20 00:49:32,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:49:32,920 INFO L93 Difference]: Finished difference Result 2448 states and 3287 transitions. [2023-12-20 00:49:32,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 00:49:32,920 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 90 [2023-12-20 00:49:32,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:49:32,925 INFO L225 Difference]: With dead ends: 2448 [2023-12-20 00:49:32,925 INFO L226 Difference]: Without dead ends: 1711 [2023-12-20 00:49:32,927 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 00:49:32,927 INFO L413 NwaCegarLoop]: 418 mSDtfsCounter, 189 mSDsluCounter, 633 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 1051 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 00:49:32,928 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 1051 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 00:49:32,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1711 states. [2023-12-20 00:49:33,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1711 to 1486. [2023-12-20 00:49:33,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1486 states, 1129 states have (on average 1.3454384410983171) internal successors, (1519), 1145 states have internal predecessors, (1519), 231 states have call successors, (231), 125 states have call predecessors, (231), 125 states have return successors, (231), 215 states have call predecessors, (231), 231 states have call successors, (231) [2023-12-20 00:49:33,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1486 states to 1486 states and 1981 transitions. [2023-12-20 00:49:33,033 INFO L78 Accepts]: Start accepts. Automaton has 1486 states and 1981 transitions. Word has length 90 [2023-12-20 00:49:33,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:49:33,033 INFO L495 AbstractCegarLoop]: Abstraction has 1486 states and 1981 transitions. [2023-12-20 00:49:33,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-20 00:49:33,034 INFO L276 IsEmpty]: Start isEmpty. Operand 1486 states and 1981 transitions. [2023-12-20 00:49:33,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-20 00:49:33,034 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:49:33,034 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 00:49:33,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-20 00:49:33,035 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:49:33,035 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:49:33,035 INFO L85 PathProgramCache]: Analyzing trace with hash 1960441268, now seen corresponding path program 1 times [2023-12-20 00:49:33,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:49:33,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026554486] [2023-12-20 00:49:33,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:49:33,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:49:33,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:33,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-20 00:49:33,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:33,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-20 00:49:33,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:33,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-20 00:49:33,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:33,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-20 00:49:33,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:33,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-20 00:49:33,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:33,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-20 00:49:33,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:33,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-20 00:49:33,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:33,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-20 00:49:33,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:33,203 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-20 00:49:33,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:49:33,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026554486] [2023-12-20 00:49:33,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026554486] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:49:33,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:49:33,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 00:49:33,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546417009] [2023-12-20 00:49:33,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:49:33,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 00:49:33,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:49:33,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 00:49:33,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 00:49:33,205 INFO L87 Difference]: Start difference. First operand 1486 states and 1981 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 6 states have internal predecessors, (69), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-20 00:49:33,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:49:33,666 INFO L93 Difference]: Finished difference Result 3286 states and 4435 transitions. [2023-12-20 00:49:33,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-20 00:49:33,666 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 6 states have internal predecessors, (69), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 92 [2023-12-20 00:49:33,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:49:33,674 INFO L225 Difference]: With dead ends: 3286 [2023-12-20 00:49:33,674 INFO L226 Difference]: Without dead ends: 2054 [2023-12-20 00:49:33,676 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2023-12-20 00:49:33,676 INFO L413 NwaCegarLoop]: 334 mSDtfsCounter, 558 mSDsluCounter, 1141 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 561 SdHoareTripleChecker+Valid, 1475 SdHoareTripleChecker+Invalid, 441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-20 00:49:33,677 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [561 Valid, 1475 Invalid, 441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 299 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-20 00:49:33,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2054 states. [2023-12-20 00:49:33,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2054 to 1513. [2023-12-20 00:49:33,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1513 states, 1143 states have (on average 1.3377077865266842) internal successors, (1529), 1160 states have internal predecessors, (1529), 239 states have call successors, (239), 130 states have call predecessors, (239), 130 states have return successors, (239), 222 states have call predecessors, (239), 239 states have call successors, (239) [2023-12-20 00:49:33,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1513 states to 1513 states and 2007 transitions. [2023-12-20 00:49:33,798 INFO L78 Accepts]: Start accepts. Automaton has 1513 states and 2007 transitions. Word has length 92 [2023-12-20 00:49:33,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:49:33,798 INFO L495 AbstractCegarLoop]: Abstraction has 1513 states and 2007 transitions. [2023-12-20 00:49:33,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 6 states have internal predecessors, (69), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-20 00:49:33,799 INFO L276 IsEmpty]: Start isEmpty. Operand 1513 states and 2007 transitions. [2023-12-20 00:49:33,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-20 00:49:33,800 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:49:33,800 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 00:49:33,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-20 00:49:33,800 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:49:33,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:49:33,800 INFO L85 PathProgramCache]: Analyzing trace with hash -1350470272, now seen corresponding path program 1 times [2023-12-20 00:49:33,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:49:33,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461757532] [2023-12-20 00:49:33,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:49:33,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:49:33,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:33,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-20 00:49:33,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:33,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-20 00:49:33,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:33,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-20 00:49:33,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:33,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-12-20 00:49:33,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:33,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-20 00:49:33,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:33,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-20 00:49:33,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:33,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-20 00:49:33,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:33,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-20 00:49:33,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:33,888 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-20 00:49:33,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:49:33,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461757532] [2023-12-20 00:49:33,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461757532] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:49:33,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:49:33,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 00:49:33,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027188164] [2023-12-20 00:49:33,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:49:33,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 00:49:33,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:49:33,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 00:49:33,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 00:49:33,890 INFO L87 Difference]: Start difference. First operand 1513 states and 2007 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-20 00:49:34,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:49:34,125 INFO L93 Difference]: Finished difference Result 3787 states and 5051 transitions. [2023-12-20 00:49:34,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 00:49:34,126 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 94 [2023-12-20 00:49:34,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:49:34,133 INFO L225 Difference]: With dead ends: 3787 [2023-12-20 00:49:34,133 INFO L226 Difference]: Without dead ends: 2571 [2023-12-20 00:49:34,136 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 00:49:34,137 INFO L413 NwaCegarLoop]: 434 mSDtfsCounter, 194 mSDsluCounter, 655 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 1089 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 00:49:34,137 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 1089 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 00:49:34,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2571 states. [2023-12-20 00:49:34,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2571 to 2392. [2023-12-20 00:49:34,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2392 states, 1785 states have (on average 1.3243697478991596) internal successors, (2364), 1812 states have internal predecessors, (2364), 394 states have call successors, (394), 212 states have call predecessors, (394), 212 states have return successors, (394), 367 states have call predecessors, (394), 394 states have call successors, (394) [2023-12-20 00:49:34,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2392 states to 2392 states and 3152 transitions. [2023-12-20 00:49:34,321 INFO L78 Accepts]: Start accepts. Automaton has 2392 states and 3152 transitions. Word has length 94 [2023-12-20 00:49:34,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:49:34,321 INFO L495 AbstractCegarLoop]: Abstraction has 2392 states and 3152 transitions. [2023-12-20 00:49:34,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-20 00:49:34,321 INFO L276 IsEmpty]: Start isEmpty. Operand 2392 states and 3152 transitions. [2023-12-20 00:49:34,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-20 00:49:34,323 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:49:34,323 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 00:49:34,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-20 00:49:34,324 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:49:34,324 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:49:34,324 INFO L85 PathProgramCache]: Analyzing trace with hash -615930275, now seen corresponding path program 1 times [2023-12-20 00:49:34,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:49:34,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309266992] [2023-12-20 00:49:34,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:49:34,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:49:34,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:34,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-20 00:49:34,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:34,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-12-20 00:49:34,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:34,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-20 00:49:34,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:34,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-20 00:49:34,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:34,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-20 00:49:34,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:34,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-12-20 00:49:34,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:34,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-12-20 00:49:34,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:34,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-20 00:49:34,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:34,360 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-20 00:49:34,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:49:34,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309266992] [2023-12-20 00:49:34,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309266992] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:49:34,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:49:34,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 00:49:34,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003980950] [2023-12-20 00:49:34,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:49:34,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 00:49:34,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:49:34,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 00:49:34,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 00:49:34,362 INFO L87 Difference]: Start difference. First operand 2392 states and 3152 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-20 00:49:34,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:49:34,631 INFO L93 Difference]: Finished difference Result 4607 states and 6090 transitions. [2023-12-20 00:49:34,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 00:49:34,631 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 94 [2023-12-20 00:49:34,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:49:34,642 INFO L225 Difference]: With dead ends: 4607 [2023-12-20 00:49:34,642 INFO L226 Difference]: Without dead ends: 2407 [2023-12-20 00:49:34,647 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 00:49:34,648 INFO L413 NwaCegarLoop]: 236 mSDtfsCounter, 4 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 445 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 00:49:34,649 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 445 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 00:49:34,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2407 states. [2023-12-20 00:49:34,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2407 to 2395. [2023-12-20 00:49:34,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2395 states, 1788 states have (on average 1.3238255033557047) internal successors, (2367), 1815 states have internal predecessors, (2367), 394 states have call successors, (394), 212 states have call predecessors, (394), 212 states have return successors, (394), 367 states have call predecessors, (394), 394 states have call successors, (394) [2023-12-20 00:49:34,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2395 states to 2395 states and 3155 transitions. [2023-12-20 00:49:34,866 INFO L78 Accepts]: Start accepts. Automaton has 2395 states and 3155 transitions. Word has length 94 [2023-12-20 00:49:34,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:49:34,867 INFO L495 AbstractCegarLoop]: Abstraction has 2395 states and 3155 transitions. [2023-12-20 00:49:34,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-20 00:49:34,867 INFO L276 IsEmpty]: Start isEmpty. Operand 2395 states and 3155 transitions. [2023-12-20 00:49:34,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-20 00:49:34,868 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:49:34,869 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 00:49:34,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-20 00:49:34,869 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:49:34,869 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:49:34,869 INFO L85 PathProgramCache]: Analyzing trace with hash -83516986, now seen corresponding path program 1 times [2023-12-20 00:49:34,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:49:34,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610736601] [2023-12-20 00:49:34,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:49:34,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:49:34,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:34,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-20 00:49:34,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:34,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-12-20 00:49:34,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:34,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-20 00:49:34,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:34,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-20 00:49:34,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:34,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-20 00:49:34,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:34,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-12-20 00:49:34,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:34,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-12-20 00:49:34,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:34,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-20 00:49:34,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:34,951 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-20 00:49:34,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:49:34,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610736601] [2023-12-20 00:49:34,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610736601] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:49:34,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:49:34,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 00:49:34,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780781987] [2023-12-20 00:49:34,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:49:34,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 00:49:34,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:49:34,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 00:49:34,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 00:49:34,954 INFO L87 Difference]: Start difference. First operand 2395 states and 3155 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-20 00:49:35,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:49:35,312 INFO L93 Difference]: Finished difference Result 5706 states and 7548 transitions. [2023-12-20 00:49:35,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 00:49:35,328 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 94 [2023-12-20 00:49:35,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:49:35,343 INFO L225 Difference]: With dead ends: 5706 [2023-12-20 00:49:35,343 INFO L226 Difference]: Without dead ends: 3725 [2023-12-20 00:49:35,362 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 00:49:35,363 INFO L413 NwaCegarLoop]: 444 mSDtfsCounter, 188 mSDsluCounter, 657 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 1101 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 00:49:35,363 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [188 Valid, 1101 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 00:49:35,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3725 states. [2023-12-20 00:49:35,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3725 to 3300. [2023-12-20 00:49:35,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3300 states, 2454 states have (on average 1.3190709046454767) internal successors, (3237), 2491 states have internal predecessors, (3237), 551 states have call successors, (551), 294 states have call predecessors, (551), 294 states have return successors, (551), 514 states have call predecessors, (551), 551 states have call successors, (551) [2023-12-20 00:49:35,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3300 states to 3300 states and 4339 transitions. [2023-12-20 00:49:35,588 INFO L78 Accepts]: Start accepts. Automaton has 3300 states and 4339 transitions. Word has length 94 [2023-12-20 00:49:35,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:49:35,588 INFO L495 AbstractCegarLoop]: Abstraction has 3300 states and 4339 transitions. [2023-12-20 00:49:35,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-20 00:49:35,588 INFO L276 IsEmpty]: Start isEmpty. Operand 3300 states and 4339 transitions. [2023-12-20 00:49:35,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-20 00:49:35,590 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:49:35,590 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 00:49:35,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-20 00:49:35,590 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:49:35,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:49:35,590 INFO L85 PathProgramCache]: Analyzing trace with hash -104683305, now seen corresponding path program 1 times [2023-12-20 00:49:35,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:49:35,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375032935] [2023-12-20 00:49:35,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:49:35,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:49:35,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:35,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-20 00:49:35,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:35,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-20 00:49:35,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:35,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-20 00:49:35,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:35,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-20 00:49:35,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:35,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-20 00:49:35,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:35,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-12-20 00:49:35,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:35,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-20 00:49:35,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:35,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-12-20 00:49:35,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:35,719 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-20 00:49:35,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:49:35,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375032935] [2023-12-20 00:49:35,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375032935] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:49:35,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:49:35,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 00:49:35,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784812958] [2023-12-20 00:49:35,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:49:35,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 00:49:35,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:49:35,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 00:49:35,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 00:49:35,721 INFO L87 Difference]: Start difference. First operand 3300 states and 4339 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-20 00:49:35,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:49:35,929 INFO L93 Difference]: Finished difference Result 6278 states and 8272 transitions. [2023-12-20 00:49:35,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 00:49:35,930 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 95 [2023-12-20 00:49:35,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:49:35,954 INFO L225 Difference]: With dead ends: 6278 [2023-12-20 00:49:35,954 INFO L226 Difference]: Without dead ends: 3040 [2023-12-20 00:49:35,961 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 00:49:35,962 INFO L413 NwaCegarLoop]: 244 mSDtfsCounter, 75 mSDsluCounter, 445 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 689 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 00:49:35,962 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 689 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 00:49:35,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3040 states. [2023-12-20 00:49:36,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3040 to 2937. [2023-12-20 00:49:36,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2937 states, 2168 states have (on average 1.3228782287822878) internal successors, (2868), 2192 states have internal predecessors, (2868), 502 states have call successors, (502), 266 states have call predecessors, (502), 266 states have return successors, (502), 478 states have call predecessors, (502), 502 states have call successors, (502) [2023-12-20 00:49:36,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2937 states to 2937 states and 3872 transitions. [2023-12-20 00:49:36,162 INFO L78 Accepts]: Start accepts. Automaton has 2937 states and 3872 transitions. Word has length 95 [2023-12-20 00:49:36,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:49:36,163 INFO L495 AbstractCegarLoop]: Abstraction has 2937 states and 3872 transitions. [2023-12-20 00:49:36,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-20 00:49:36,163 INFO L276 IsEmpty]: Start isEmpty. Operand 2937 states and 3872 transitions. [2023-12-20 00:49:36,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-20 00:49:36,164 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:49:36,164 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 00:49:36,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-20 00:49:36,164 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:49:36,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:49:36,165 INFO L85 PathProgramCache]: Analyzing trace with hash -58029957, now seen corresponding path program 1 times [2023-12-20 00:49:36,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:49:36,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669776820] [2023-12-20 00:49:36,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:49:36,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:49:36,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:36,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-20 00:49:36,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:36,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-20 00:49:36,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:36,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-20 00:49:36,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:36,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-20 00:49:36,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:36,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-20 00:49:36,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:36,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-12-20 00:49:36,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:36,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-20 00:49:36,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:36,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-12-20 00:49:36,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:36,243 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-20 00:49:36,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:49:36,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669776820] [2023-12-20 00:49:36,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669776820] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:49:36,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:49:36,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 00:49:36,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894678648] [2023-12-20 00:49:36,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:49:36,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 00:49:36,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:49:36,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 00:49:36,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 00:49:36,245 INFO L87 Difference]: Start difference. First operand 2937 states and 3872 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-20 00:49:36,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:49:36,460 INFO L93 Difference]: Finished difference Result 5747 states and 7608 transitions. [2023-12-20 00:49:36,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 00:49:36,460 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 97 [2023-12-20 00:49:36,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:49:36,475 INFO L225 Difference]: With dead ends: 5747 [2023-12-20 00:49:36,475 INFO L226 Difference]: Without dead ends: 2979 [2023-12-20 00:49:36,481 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 00:49:36,482 INFO L413 NwaCegarLoop]: 239 mSDtfsCounter, 9 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 445 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 00:49:36,482 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 445 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 00:49:36,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2979 states. [2023-12-20 00:49:36,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2979 to 2944. [2023-12-20 00:49:36,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2944 states, 2175 states have (on average 1.3218390804597702) internal successors, (2875), 2199 states have internal predecessors, (2875), 502 states have call successors, (502), 266 states have call predecessors, (502), 266 states have return successors, (502), 478 states have call predecessors, (502), 502 states have call successors, (502) [2023-12-20 00:49:36,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2944 states to 2944 states and 3879 transitions. [2023-12-20 00:49:36,927 INFO L78 Accepts]: Start accepts. Automaton has 2944 states and 3879 transitions. Word has length 97 [2023-12-20 00:49:36,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:49:36,928 INFO L495 AbstractCegarLoop]: Abstraction has 2944 states and 3879 transitions. [2023-12-20 00:49:36,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-20 00:49:36,928 INFO L276 IsEmpty]: Start isEmpty. Operand 2944 states and 3879 transitions. [2023-12-20 00:49:36,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-20 00:49:36,929 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:49:36,929 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 00:49:36,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-12-20 00:49:36,929 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:49:36,930 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:49:36,930 INFO L85 PathProgramCache]: Analyzing trace with hash 963007751, now seen corresponding path program 1 times [2023-12-20 00:49:36,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:49:36,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44352900] [2023-12-20 00:49:36,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:49:36,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:49:36,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:37,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-20 00:49:37,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:37,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-20 00:49:37,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:37,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-20 00:49:37,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:37,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-20 00:49:37,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:37,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-20 00:49:37,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:37,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-12-20 00:49:37,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:37,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-20 00:49:37,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:37,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-12-20 00:49:37,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:37,022 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-20 00:49:37,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:49:37,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44352900] [2023-12-20 00:49:37,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44352900] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:49:37,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:49:37,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 00:49:37,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557637233] [2023-12-20 00:49:37,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:49:37,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 00:49:37,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:49:37,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 00:49:37,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 00:49:37,024 INFO L87 Difference]: Start difference. First operand 2944 states and 3879 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-20 00:49:37,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:49:37,354 INFO L93 Difference]: Finished difference Result 5706 states and 7536 transitions. [2023-12-20 00:49:37,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 00:49:37,355 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 97 [2023-12-20 00:49:37,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:49:37,366 INFO L225 Difference]: With dead ends: 5706 [2023-12-20 00:49:37,366 INFO L226 Difference]: Without dead ends: 2871 [2023-12-20 00:49:37,375 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 00:49:37,375 INFO L413 NwaCegarLoop]: 244 mSDtfsCounter, 62 mSDsluCounter, 438 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 682 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 00:49:37,375 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 682 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 00:49:37,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2871 states. [2023-12-20 00:49:37,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2871 to 2706. [2023-12-20 00:49:37,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2706 states, 1996 states have (on average 1.3211422845691383) internal successors, (2637), 2015 states have internal predecessors, (2637), 464 states have call successors, (464), 245 states have call predecessors, (464), 245 states have return successors, (464), 445 states have call predecessors, (464), 464 states have call successors, (464) [2023-12-20 00:49:37,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2706 states to 2706 states and 3565 transitions. [2023-12-20 00:49:37,717 INFO L78 Accepts]: Start accepts. Automaton has 2706 states and 3565 transitions. Word has length 97 [2023-12-20 00:49:37,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:49:37,717 INFO L495 AbstractCegarLoop]: Abstraction has 2706 states and 3565 transitions. [2023-12-20 00:49:37,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-20 00:49:37,718 INFO L276 IsEmpty]: Start isEmpty. Operand 2706 states and 3565 transitions. [2023-12-20 00:49:37,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-12-20 00:49:37,722 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:49:37,723 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:49:37,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-12-20 00:49:37,723 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:49:37,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:49:37,723 INFO L85 PathProgramCache]: Analyzing trace with hash -1659213603, now seen corresponding path program 1 times [2023-12-20 00:49:37,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:49:37,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303404300] [2023-12-20 00:49:37,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:49:37,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:49:37,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:37,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-20 00:49:37,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:37,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-20 00:49:38,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:38,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-12-20 00:49:38,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:38,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-20 00:49:38,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:38,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-20 00:49:38,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:38,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-12-20 00:49:38,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:38,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-20 00:49:38,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:38,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-20 00:49:38,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:38,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-20 00:49:38,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:38,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-12-20 00:49:38,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:38,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-20 00:49:38,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:38,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-12-20 00:49:38,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:38,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-12-20 00:49:38,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:38,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-20 00:49:38,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:38,029 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 14 proven. 8 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-12-20 00:49:38,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:49:38,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303404300] [2023-12-20 00:49:38,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303404300] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 00:49:38,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1385802568] [2023-12-20 00:49:38,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:49:38,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 00:49:38,031 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 00:49:38,046 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) [2023-12-20 00:49:38,053 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-20 00:49:38,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:38,300 INFO L262 TraceCheckSpWp]: Trace formula consists of 612 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-20 00:49:38,315 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 00:49:38,499 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 55 proven. 4 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-12-20 00:49:38,500 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 00:49:38,657 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 22 proven. 2 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2023-12-20 00:49:38,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1385802568] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 00:49:38,657 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 00:49:38,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2023-12-20 00:49:38,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308252109] [2023-12-20 00:49:38,658 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 00:49:38,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-20 00:49:38,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:49:38,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-20 00:49:38,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2023-12-20 00:49:38,660 INFO L87 Difference]: Start difference. First operand 2706 states and 3565 transitions. Second operand has 13 states, 13 states have (on average 13.384615384615385) internal successors, (174), 12 states have internal predecessors, (174), 6 states have call successors, (37), 4 states have call predecessors, (37), 6 states have return successors, (37), 7 states have call predecessors, (37), 6 states have call successors, (37) [2023-12-20 00:49:40,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:49:40,230 INFO L93 Difference]: Finished difference Result 6443 states and 8628 transitions. [2023-12-20 00:49:40,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-20 00:49:40,231 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 13.384615384615385) internal successors, (174), 12 states have internal predecessors, (174), 6 states have call successors, (37), 4 states have call predecessors, (37), 6 states have return successors, (37), 7 states have call predecessors, (37), 6 states have call successors, (37) Word has length 140 [2023-12-20 00:49:40,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:49:40,246 INFO L225 Difference]: With dead ends: 6443 [2023-12-20 00:49:40,246 INFO L226 Difference]: Without dead ends: 3973 [2023-12-20 00:49:40,255 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 306 SyntacticMatches, 4 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=252, Invalid=938, Unknown=0, NotChecked=0, Total=1190 [2023-12-20 00:49:40,255 INFO L413 NwaCegarLoop]: 227 mSDtfsCounter, 1782 mSDsluCounter, 1573 mSDsCounter, 0 mSdLazyCounter, 483 mSolverCounterSat, 597 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1782 SdHoareTripleChecker+Valid, 1800 SdHoareTripleChecker+Invalid, 1080 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 597 IncrementalHoareTripleChecker+Valid, 483 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-20 00:49:40,255 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1782 Valid, 1800 Invalid, 1080 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [597 Valid, 483 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-20 00:49:40,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3973 states. [2023-12-20 00:49:40,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3973 to 3416. [2023-12-20 00:49:40,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3416 states, 2527 states have (on average 1.3126236644242184) internal successors, (3317), 2551 states have internal predecessors, (3317), 575 states have call successors, (575), 313 states have call predecessors, (575), 313 states have return successors, (575), 551 states have call predecessors, (575), 575 states have call successors, (575) [2023-12-20 00:49:40,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3416 states to 3416 states and 4467 transitions. [2023-12-20 00:49:40,667 INFO L78 Accepts]: Start accepts. Automaton has 3416 states and 4467 transitions. Word has length 140 [2023-12-20 00:49:40,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:49:40,668 INFO L495 AbstractCegarLoop]: Abstraction has 3416 states and 4467 transitions. [2023-12-20 00:49:40,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 13.384615384615385) internal successors, (174), 12 states have internal predecessors, (174), 6 states have call successors, (37), 4 states have call predecessors, (37), 6 states have return successors, (37), 7 states have call predecessors, (37), 6 states have call successors, (37) [2023-12-20 00:49:40,668 INFO L276 IsEmpty]: Start isEmpty. Operand 3416 states and 4467 transitions. [2023-12-20 00:49:40,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2023-12-20 00:49:40,672 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:49:40,672 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:49:40,691 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-20 00:49:40,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-12-20 00:49:40,879 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:49:40,879 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:49:40,879 INFO L85 PathProgramCache]: Analyzing trace with hash -1609450868, now seen corresponding path program 1 times [2023-12-20 00:49:40,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:49:40,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969496596] [2023-12-20 00:49:40,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:49:40,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:49:40,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:41,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-20 00:49:41,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:41,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-20 00:49:41,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:41,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-20 00:49:41,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:41,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-20 00:49:41,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:41,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-20 00:49:41,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:41,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-20 00:49:41,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:41,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-20 00:49:41,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:41,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-20 00:49:41,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:41,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-12-20 00:49:41,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:41,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-20 00:49:41,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:41,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-20 00:49:41,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:41,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-20 00:49:41,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:41,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-12-20 00:49:41,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:41,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2023-12-20 00:49:41,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:41,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-12-20 00:49:41,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:41,219 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 9 proven. 14 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2023-12-20 00:49:41,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:49:41,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969496596] [2023-12-20 00:49:41,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969496596] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 00:49:41,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1214033666] [2023-12-20 00:49:41,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:49:41,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 00:49:41,220 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 00:49:41,239 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) [2023-12-20 00:49:41,266 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-20 00:49:41,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:41,391 INFO L262 TraceCheckSpWp]: Trace formula consists of 648 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-20 00:49:41,402 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 00:49:41,583 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 30 proven. 43 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-20 00:49:41,584 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 00:49:41,762 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-12-20 00:49:41,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1214033666] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 00:49:41,763 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 00:49:41,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 16 [2023-12-20 00:49:41,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178133185] [2023-12-20 00:49:41,763 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 00:49:41,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-20 00:49:41,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:49:41,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-20 00:49:41,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2023-12-20 00:49:41,765 INFO L87 Difference]: Start difference. First operand 3416 states and 4467 transitions. Second operand has 16 states, 16 states have (on average 11.375) internal successors, (182), 14 states have internal predecessors, (182), 6 states have call successors, (43), 4 states have call predecessors, (43), 7 states have return successors, (42), 8 states have call predecessors, (42), 6 states have call successors, (42) [2023-12-20 00:49:46,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:49:46,812 INFO L93 Difference]: Finished difference Result 13961 states and 18788 transitions. [2023-12-20 00:49:46,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2023-12-20 00:49:46,813 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 11.375) internal successors, (182), 14 states have internal predecessors, (182), 6 states have call successors, (43), 4 states have call predecessors, (43), 7 states have return successors, (42), 8 states have call predecessors, (42), 6 states have call successors, (42) Word has length 149 [2023-12-20 00:49:46,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:49:46,850 INFO L225 Difference]: With dead ends: 13961 [2023-12-20 00:49:46,851 INFO L226 Difference]: Without dead ends: 10807 [2023-12-20 00:49:46,866 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 349 SyntacticMatches, 4 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4167 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1651, Invalid=10559, Unknown=0, NotChecked=0, Total=12210 [2023-12-20 00:49:46,867 INFO L413 NwaCegarLoop]: 928 mSDtfsCounter, 4003 mSDsluCounter, 7130 mSDsCounter, 0 mSdLazyCounter, 2245 mSolverCounterSat, 1739 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4003 SdHoareTripleChecker+Valid, 8058 SdHoareTripleChecker+Invalid, 3984 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1739 IncrementalHoareTripleChecker+Valid, 2245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-20 00:49:46,867 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4003 Valid, 8058 Invalid, 3984 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1739 Valid, 2245 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-20 00:49:46,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10807 states. [2023-12-20 00:49:47,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10807 to 5998. [2023-12-20 00:49:47,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5998 states, 4441 states have (on average 1.316595361405089) internal successors, (5847), 4482 states have internal predecessors, (5847), 1005 states have call successors, (1005), 551 states have call predecessors, (1005), 551 states have return successors, (1005), 964 states have call predecessors, (1005), 1005 states have call successors, (1005) [2023-12-20 00:49:47,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5998 states to 5998 states and 7857 transitions. [2023-12-20 00:49:47,495 INFO L78 Accepts]: Start accepts. Automaton has 5998 states and 7857 transitions. Word has length 149 [2023-12-20 00:49:47,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:49:47,496 INFO L495 AbstractCegarLoop]: Abstraction has 5998 states and 7857 transitions. [2023-12-20 00:49:47,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 11.375) internal successors, (182), 14 states have internal predecessors, (182), 6 states have call successors, (43), 4 states have call predecessors, (43), 7 states have return successors, (42), 8 states have call predecessors, (42), 6 states have call successors, (42) [2023-12-20 00:49:47,497 INFO L276 IsEmpty]: Start isEmpty. Operand 5998 states and 7857 transitions. [2023-12-20 00:49:47,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-20 00:49:47,506 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:49:47,506 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:49:47,528 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-20 00:49:47,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-12-20 00:49:47,713 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:49:47,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:49:47,713 INFO L85 PathProgramCache]: Analyzing trace with hash -1279532320, now seen corresponding path program 1 times [2023-12-20 00:49:47,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:49:47,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554355746] [2023-12-20 00:49:47,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:49:47,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:49:47,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:47,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-20 00:49:47,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:47,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-20 00:49:47,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:47,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-20 00:49:47,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:47,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-20 00:49:47,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:47,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-20 00:49:47,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:47,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-20 00:49:47,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:47,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-20 00:49:47,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:47,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-20 00:49:47,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:47,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-20 00:49:47,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:47,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-12-20 00:49:47,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:47,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-20 00:49:47,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:47,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-12-20 00:49:47,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:47,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-12-20 00:49:47,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:47,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-12-20 00:49:47,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:47,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-12-20 00:49:47,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:47,855 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-12-20 00:49:47,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:49:47,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554355746] [2023-12-20 00:49:47,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554355746] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:49:47,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:49:47,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 00:49:47,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595544764] [2023-12-20 00:49:47,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:49:47,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 00:49:47,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:49:47,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 00:49:47,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 00:49:47,857 INFO L87 Difference]: Start difference. First operand 5998 states and 7857 transitions. Second operand has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 6 states have internal predecessors, (86), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-20 00:49:49,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:49:49,045 INFO L93 Difference]: Finished difference Result 18544 states and 24701 transitions. [2023-12-20 00:49:49,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-20 00:49:49,046 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 6 states have internal predecessors, (86), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) Word has length 151 [2023-12-20 00:49:49,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:49:49,087 INFO L225 Difference]: With dead ends: 18544 [2023-12-20 00:49:49,087 INFO L226 Difference]: Without dead ends: 12887 [2023-12-20 00:49:49,104 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-12-20 00:49:49,106 INFO L413 NwaCegarLoop]: 461 mSDtfsCounter, 287 mSDsluCounter, 1992 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 2453 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 00:49:49,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [306 Valid, 2453 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 00:49:49,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12887 states. [2023-12-20 00:49:49,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12887 to 8156. [2023-12-20 00:49:49,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8156 states, 5993 states have (on average 1.3133655931920574) internal successors, (7871), 6051 states have internal predecessors, (7871), 1408 states have call successors, (1408), 754 states have call predecessors, (1408), 754 states have return successors, (1408), 1350 states have call predecessors, (1408), 1408 states have call successors, (1408) [2023-12-20 00:49:50,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8156 states to 8156 states and 10687 transitions. [2023-12-20 00:49:50,028 INFO L78 Accepts]: Start accepts. Automaton has 8156 states and 10687 transitions. Word has length 151 [2023-12-20 00:49:50,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:49:50,030 INFO L495 AbstractCegarLoop]: Abstraction has 8156 states and 10687 transitions. [2023-12-20 00:49:50,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 6 states have internal predecessors, (86), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2023-12-20 00:49:50,030 INFO L276 IsEmpty]: Start isEmpty. Operand 8156 states and 10687 transitions. [2023-12-20 00:49:50,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-12-20 00:49:50,042 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:49:50,042 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:49:50,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-12-20 00:49:50,042 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:49:50,042 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:49:50,043 INFO L85 PathProgramCache]: Analyzing trace with hash -1423134939, now seen corresponding path program 1 times [2023-12-20 00:49:50,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:49:50,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469451594] [2023-12-20 00:49:50,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:49:50,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:49:50,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:50,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-20 00:49:50,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:50,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-20 00:49:50,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:50,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-20 00:49:50,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:50,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-20 00:49:50,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:50,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-20 00:49:50,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:50,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-20 00:49:50,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:50,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-20 00:49:50,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:50,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-20 00:49:50,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:50,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-20 00:49:50,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:50,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-12-20 00:49:50,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:50,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-12-20 00:49:50,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:50,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-20 00:49:50,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:50,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-20 00:49:50,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:50,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-12-20 00:49:50,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:50,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-12-20 00:49:50,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:50,244 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 14 proven. 10 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2023-12-20 00:49:50,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:49:50,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469451594] [2023-12-20 00:49:50,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469451594] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 00:49:50,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [128986428] [2023-12-20 00:49:50,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:49:50,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 00:49:50,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 00:49:50,273 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) [2023-12-20 00:49:50,299 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-20 00:49:50,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:50,418 INFO L262 TraceCheckSpWp]: Trace formula consists of 653 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-20 00:49:50,424 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 00:49:50,468 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 49 proven. 6 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-20 00:49:50,468 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 00:49:50,531 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-12-20 00:49:50,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [128986428] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-20 00:49:50,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-20 00:49:50,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7, 7] total 13 [2023-12-20 00:49:50,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174631480] [2023-12-20 00:49:50,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:49:50,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 00:49:50,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:49:50,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 00:49:50,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2023-12-20 00:49:50,533 INFO L87 Difference]: Start difference. First operand 8156 states and 10687 transitions. Second operand has 5 states, 4 states have (on average 21.5) internal successors, (86), 5 states have internal predecessors, (86), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2023-12-20 00:49:51,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:49:51,046 INFO L93 Difference]: Finished difference Result 13340 states and 17531 transitions. [2023-12-20 00:49:51,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 00:49:51,047 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 21.5) internal successors, (86), 5 states have internal predecessors, (86), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) Word has length 153 [2023-12-20 00:49:51,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:49:51,061 INFO L225 Difference]: With dead ends: 13340 [2023-12-20 00:49:51,061 INFO L226 Difference]: Without dead ends: 5370 [2023-12-20 00:49:51,075 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 329 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2023-12-20 00:49:51,075 INFO L413 NwaCegarLoop]: 236 mSDtfsCounter, 0 mSDsluCounter, 696 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 932 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 00:49:51,076 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 932 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 00:49:51,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5370 states. [2023-12-20 00:49:51,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5370 to 5148. [2023-12-20 00:49:51,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5148 states, 3786 states have (on average 1.3124669836238774) internal successors, (4969), 3820 states have internal predecessors, (4969), 891 states have call successors, (891), 470 states have call predecessors, (891), 470 states have return successors, (891), 857 states have call predecessors, (891), 891 states have call successors, (891) [2023-12-20 00:49:51,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5148 states to 5148 states and 6751 transitions. [2023-12-20 00:49:51,528 INFO L78 Accepts]: Start accepts. Automaton has 5148 states and 6751 transitions. Word has length 153 [2023-12-20 00:49:51,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:49:51,528 INFO L495 AbstractCegarLoop]: Abstraction has 5148 states and 6751 transitions. [2023-12-20 00:49:51,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 21.5) internal successors, (86), 5 states have internal predecessors, (86), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2023-12-20 00:49:51,529 INFO L276 IsEmpty]: Start isEmpty. Operand 5148 states and 6751 transitions. [2023-12-20 00:49:51,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-12-20 00:49:51,534 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:49:51,535 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:49:51,546 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-20 00:49:51,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 00:49:51,737 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:49:51,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:49:51,737 INFO L85 PathProgramCache]: Analyzing trace with hash -1968547094, now seen corresponding path program 1 times [2023-12-20 00:49:51,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:49:51,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053359977] [2023-12-20 00:49:51,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:49:51,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:49:51,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:51,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-20 00:49:51,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:51,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-20 00:49:51,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:51,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-20 00:49:51,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:51,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-20 00:49:51,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:51,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-20 00:49:51,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:51,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-20 00:49:51,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:51,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-20 00:49:51,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:51,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-20 00:49:51,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:51,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-20 00:49:51,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:51,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-20 00:49:51,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:51,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-20 00:49:51,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:51,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-20 00:49:51,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:51,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-12-20 00:49:51,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:51,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-12-20 00:49:51,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:51,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-20 00:49:51,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:51,962 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 13 proven. 10 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2023-12-20 00:49:51,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:49:51,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053359977] [2023-12-20 00:49:51,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053359977] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 00:49:51,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [868857258] [2023-12-20 00:49:51,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:49:51,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 00:49:51,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 00:49:51,963 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 00:49:51,988 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-20 00:49:52,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:52,146 INFO L262 TraceCheckSpWp]: Trace formula consists of 670 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-20 00:49:52,150 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 00:49:52,498 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 57 proven. 18 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-20 00:49:52,499 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 00:49:52,753 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 13 proven. 10 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2023-12-20 00:49:52,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [868857258] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 00:49:52,754 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 00:49:52,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 10, 8] total 21 [2023-12-20 00:49:52,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127974640] [2023-12-20 00:49:52,754 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 00:49:52,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-20 00:49:52,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:49:52,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-20 00:49:52,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=340, Unknown=0, NotChecked=0, Total=420 [2023-12-20 00:49:52,756 INFO L87 Difference]: Start difference. First operand 5148 states and 6751 transitions. Second operand has 21 states, 21 states have (on average 11.285714285714286) internal successors, (237), 21 states have internal predecessors, (237), 9 states have call successors, (41), 5 states have call predecessors, (41), 5 states have return successors, (40), 9 states have call predecessors, (40), 9 states have call successors, (40) [2023-12-20 00:49:57,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:49:57,064 INFO L93 Difference]: Finished difference Result 14591 states and 19285 transitions. [2023-12-20 00:49:57,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2023-12-20 00:49:57,065 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 11.285714285714286) internal successors, (237), 21 states have internal predecessors, (237), 9 states have call successors, (41), 5 states have call predecessors, (41), 5 states have return successors, (40), 9 states have call predecessors, (40), 9 states have call successors, (40) Word has length 154 [2023-12-20 00:49:57,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:49:57,125 INFO L225 Difference]: With dead ends: 14591 [2023-12-20 00:49:57,125 INFO L226 Difference]: Without dead ends: 9684 [2023-12-20 00:49:57,136 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 456 GetRequests, 350 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3954 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1778, Invalid=9778, Unknown=0, NotChecked=0, Total=11556 [2023-12-20 00:49:57,136 INFO L413 NwaCegarLoop]: 529 mSDtfsCounter, 3034 mSDsluCounter, 4375 mSDsCounter, 0 mSdLazyCounter, 2696 mSolverCounterSat, 998 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3034 SdHoareTripleChecker+Valid, 4904 SdHoareTripleChecker+Invalid, 3694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 998 IncrementalHoareTripleChecker+Valid, 2696 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-20 00:49:57,136 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3034 Valid, 4904 Invalid, 3694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [998 Valid, 2696 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-20 00:49:57,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9684 states. [2023-12-20 00:49:58,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9684 to 8637. [2023-12-20 00:49:58,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8637 states, 6438 states have (on average 1.3134513824168996) internal successors, (8456), 6491 states have internal predecessors, (8456), 1422 states have call successors, (1422), 776 states have call predecessors, (1422), 776 states have return successors, (1422), 1369 states have call predecessors, (1422), 1422 states have call successors, (1422) [2023-12-20 00:49:58,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8637 states to 8637 states and 11300 transitions. [2023-12-20 00:49:58,034 INFO L78 Accepts]: Start accepts. Automaton has 8637 states and 11300 transitions. Word has length 154 [2023-12-20 00:49:58,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:49:58,035 INFO L495 AbstractCegarLoop]: Abstraction has 8637 states and 11300 transitions. [2023-12-20 00:49:58,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 11.285714285714286) internal successors, (237), 21 states have internal predecessors, (237), 9 states have call successors, (41), 5 states have call predecessors, (41), 5 states have return successors, (40), 9 states have call predecessors, (40), 9 states have call successors, (40) [2023-12-20 00:49:58,035 INFO L276 IsEmpty]: Start isEmpty. Operand 8637 states and 11300 transitions. [2023-12-20 00:49:58,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-12-20 00:49:58,046 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:49:58,046 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:49:58,060 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-20 00:49:58,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 00:49:58,254 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:49:58,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:49:58,254 INFO L85 PathProgramCache]: Analyzing trace with hash 1365470785, now seen corresponding path program 1 times [2023-12-20 00:49:58,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:49:58,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587758262] [2023-12-20 00:49:58,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:49:58,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:49:58,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:58,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-20 00:49:58,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:58,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-20 00:49:58,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:58,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-20 00:49:58,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:58,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-20 00:49:58,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:58,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-20 00:49:58,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:58,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-20 00:49:58,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:58,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-20 00:49:58,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:58,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-20 00:49:58,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:58,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-20 00:49:58,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:58,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-20 00:49:58,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:58,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-20 00:49:58,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:58,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-20 00:49:58,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:58,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-12-20 00:49:58,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:58,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-12-20 00:49:58,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:58,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-20 00:49:58,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:58,869 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 22 proven. 2 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2023-12-20 00:49:58,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:49:58,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587758262] [2023-12-20 00:49:58,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587758262] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 00:49:58,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1813746509] [2023-12-20 00:49:58,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:49:58,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 00:49:58,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 00:49:58,886 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 00:49:58,920 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-20 00:49:59,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:49:59,039 INFO L262 TraceCheckSpWp]: Trace formula consists of 668 conjuncts, 44 conjunts are in the unsatisfiable core [2023-12-20 00:49:59,042 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 00:49:59,496 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 66 proven. 10 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-20 00:49:59,496 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 00:49:59,920 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 14 proven. 10 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2023-12-20 00:49:59,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1813746509] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 00:49:59,921 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 00:49:59,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 10] total 25 [2023-12-20 00:49:59,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691626397] [2023-12-20 00:49:59,921 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 00:49:59,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-12-20 00:49:59,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:49:59,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-12-20 00:49:59,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=504, Unknown=0, NotChecked=0, Total=600 [2023-12-20 00:49:59,925 INFO L87 Difference]: Start difference. First operand 8637 states and 11300 transitions. Second operand has 25 states, 25 states have (on average 9.04) internal successors, (226), 25 states have internal predecessors, (226), 10 states have call successors, (41), 5 states have call predecessors, (41), 5 states have return successors, (40), 10 states have call predecessors, (40), 10 states have call successors, (40) [2023-12-20 00:50:03,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:50:03,480 INFO L93 Difference]: Finished difference Result 18211 states and 23854 transitions. [2023-12-20 00:50:03,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2023-12-20 00:50:03,480 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 9.04) internal successors, (226), 25 states have internal predecessors, (226), 10 states have call successors, (41), 5 states have call predecessors, (41), 5 states have return successors, (40), 10 states have call predecessors, (40), 10 states have call successors, (40) Word has length 154 [2023-12-20 00:50:03,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:50:03,509 INFO L225 Difference]: With dead ends: 18211 [2023-12-20 00:50:03,509 INFO L226 Difference]: Without dead ends: 9822 [2023-12-20 00:50:03,523 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 413 GetRequests, 340 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1618 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=831, Invalid=4719, Unknown=0, NotChecked=0, Total=5550 [2023-12-20 00:50:03,524 INFO L413 NwaCegarLoop]: 314 mSDtfsCounter, 1440 mSDsluCounter, 2782 mSDsCounter, 0 mSdLazyCounter, 1520 mSolverCounterSat, 451 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1440 SdHoareTripleChecker+Valid, 3096 SdHoareTripleChecker+Invalid, 1971 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 451 IncrementalHoareTripleChecker+Valid, 1520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-20 00:50:03,524 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1440 Valid, 3096 Invalid, 1971 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [451 Valid, 1520 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-20 00:50:03,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9822 states. [2023-12-20 00:50:04,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9822 to 9568. [2023-12-20 00:50:04,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9568 states, 7141 states have (on average 1.3097605377398123) internal successors, (9353), 7200 states have internal predecessors, (9353), 1562 states have call successors, (1562), 864 states have call predecessors, (1562), 864 states have return successors, (1562), 1503 states have call predecessors, (1562), 1562 states have call successors, (1562) [2023-12-20 00:50:04,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9568 states to 9568 states and 12477 transitions. [2023-12-20 00:50:04,656 INFO L78 Accepts]: Start accepts. Automaton has 9568 states and 12477 transitions. Word has length 154 [2023-12-20 00:50:04,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:50:04,657 INFO L495 AbstractCegarLoop]: Abstraction has 9568 states and 12477 transitions. [2023-12-20 00:50:04,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 9.04) internal successors, (226), 25 states have internal predecessors, (226), 10 states have call successors, (41), 5 states have call predecessors, (41), 5 states have return successors, (40), 10 states have call predecessors, (40), 10 states have call successors, (40) [2023-12-20 00:50:04,657 INFO L276 IsEmpty]: Start isEmpty. Operand 9568 states and 12477 transitions. [2023-12-20 00:50:04,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2023-12-20 00:50:04,664 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:50:04,664 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:50:04,671 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-20 00:50:04,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2023-12-20 00:50:04,871 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:50:04,871 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:50:04,871 INFO L85 PathProgramCache]: Analyzing trace with hash 769356944, now seen corresponding path program 1 times [2023-12-20 00:50:04,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:50:04,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620932314] [2023-12-20 00:50:04,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:50:04,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:50:04,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:04,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-20 00:50:05,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:05,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-20 00:50:05,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:05,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-20 00:50:05,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:05,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-20 00:50:05,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:05,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-20 00:50:05,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:05,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-20 00:50:05,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:05,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-20 00:50:05,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:05,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-20 00:50:05,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:05,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-12-20 00:50:05,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:05,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-12-20 00:50:05,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:05,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-20 00:50:05,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:05,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-12-20 00:50:05,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:05,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-12-20 00:50:05,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:05,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-12-20 00:50:05,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:05,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-20 00:50:05,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:05,080 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 14 proven. 25 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2023-12-20 00:50:05,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:50:05,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620932314] [2023-12-20 00:50:05,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620932314] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 00:50:05,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [57612791] [2023-12-20 00:50:05,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:50:05,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 00:50:05,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 00:50:05,082 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 00:50:05,121 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-20 00:50:05,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:05,229 INFO L262 TraceCheckSpWp]: Trace formula consists of 670 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-20 00:50:05,232 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 00:50:05,373 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 8 proven. 84 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-20 00:50:05,373 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 00:50:05,486 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 14 proven. 25 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2023-12-20 00:50:05,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [57612791] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 00:50:05,486 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 00:50:05,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 10 [2023-12-20 00:50:05,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235747056] [2023-12-20 00:50:05,486 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 00:50:05,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-20 00:50:05,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:50:05,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-20 00:50:05,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-12-20 00:50:05,489 INFO L87 Difference]: Start difference. First operand 9568 states and 12477 transitions. Second operand has 10 states, 10 states have (on average 14.2) internal successors, (142), 9 states have internal predecessors, (142), 4 states have call successors, (32), 5 states have call predecessors, (32), 7 states have return successors, (31), 4 states have call predecessors, (31), 3 states have call successors, (31) [2023-12-20 00:50:07,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:50:07,024 INFO L93 Difference]: Finished difference Result 24381 states and 31523 transitions. [2023-12-20 00:50:07,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-20 00:50:07,024 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 14.2) internal successors, (142), 9 states have internal predecessors, (142), 4 states have call successors, (32), 5 states have call predecessors, (32), 7 states have return successors, (31), 4 states have call predecessors, (31), 3 states have call successors, (31) Word has length 156 [2023-12-20 00:50:07,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:50:07,069 INFO L225 Difference]: With dead ends: 24381 [2023-12-20 00:50:07,069 INFO L226 Difference]: Without dead ends: 15142 [2023-12-20 00:50:07,084 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 360 GetRequests, 338 SyntacticMatches, 4 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2023-12-20 00:50:07,085 INFO L413 NwaCegarLoop]: 268 mSDtfsCounter, 316 mSDsluCounter, 1512 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 1780 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 00:50:07,085 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [317 Valid, 1780 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 00:50:07,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15142 states. [2023-12-20 00:50:08,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15142 to 12796. [2023-12-20 00:50:08,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12796 states, 9586 states have (on average 1.2921969538910911) internal successors, (12387), 9674 states have internal predecessors, (12387), 2039 states have call successors, (2039), 1170 states have call predecessors, (2039), 1170 states have return successors, (2039), 1951 states have call predecessors, (2039), 2039 states have call successors, (2039) [2023-12-20 00:50:08,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12796 states to 12796 states and 16465 transitions. [2023-12-20 00:50:08,544 INFO L78 Accepts]: Start accepts. Automaton has 12796 states and 16465 transitions. Word has length 156 [2023-12-20 00:50:08,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:50:08,545 INFO L495 AbstractCegarLoop]: Abstraction has 12796 states and 16465 transitions. [2023-12-20 00:50:08,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.2) internal successors, (142), 9 states have internal predecessors, (142), 4 states have call successors, (32), 5 states have call predecessors, (32), 7 states have return successors, (31), 4 states have call predecessors, (31), 3 states have call successors, (31) [2023-12-20 00:50:08,545 INFO L276 IsEmpty]: Start isEmpty. Operand 12796 states and 16465 transitions. [2023-12-20 00:50:08,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-12-20 00:50:08,552 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:50:08,553 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:50:08,574 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-20 00:50:08,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 00:50:08,759 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:50:08,759 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:50:08,759 INFO L85 PathProgramCache]: Analyzing trace with hash -393426588, now seen corresponding path program 1 times [2023-12-20 00:50:08,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:50:08,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264442815] [2023-12-20 00:50:08,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:50:08,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:50:08,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:09,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-20 00:50:09,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:09,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-20 00:50:09,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:09,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-20 00:50:09,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:09,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-20 00:50:09,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:09,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-20 00:50:09,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:09,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-20 00:50:09,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:09,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-20 00:50:09,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:09,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-20 00:50:09,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:09,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-20 00:50:09,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:09,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-20 00:50:09,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:09,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-12-20 00:50:09,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:09,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-12-20 00:50:09,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:09,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-12-20 00:50:09,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:09,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2023-12-20 00:50:09,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:09,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-12-20 00:50:09,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:09,340 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 22 proven. 5 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2023-12-20 00:50:09,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:50:09,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264442815] [2023-12-20 00:50:09,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264442815] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 00:50:09,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [882966628] [2023-12-20 00:50:09,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:50:09,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 00:50:09,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 00:50:09,358 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 00:50:09,379 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-20 00:50:09,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:09,508 INFO L262 TraceCheckSpWp]: Trace formula consists of 669 conjuncts, 40 conjunts are in the unsatisfiable core [2023-12-20 00:50:09,511 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 00:50:09,968 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 66 proven. 13 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-20 00:50:09,968 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 00:50:10,508 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 15 proven. 12 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2023-12-20 00:50:10,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [882966628] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 00:50:10,509 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 00:50:10,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 10] total 25 [2023-12-20 00:50:10,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517105753] [2023-12-20 00:50:10,510 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 00:50:10,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-12-20 00:50:10,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:50:10,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-12-20 00:50:10,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=505, Unknown=0, NotChecked=0, Total=600 [2023-12-20 00:50:10,511 INFO L87 Difference]: Start difference. First operand 12796 states and 16465 transitions. Second operand has 25 states, 25 states have (on average 9.16) internal successors, (229), 25 states have internal predecessors, (229), 10 states have call successors, (41), 5 states have call predecessors, (41), 5 states have return successors, (40), 10 states have call predecessors, (40), 10 states have call successors, (40) [2023-12-20 00:50:14,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:50:14,266 INFO L93 Difference]: Finished difference Result 21329 states and 27564 transitions. [2023-12-20 00:50:14,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-12-20 00:50:14,266 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 9.16) internal successors, (229), 25 states have internal predecessors, (229), 10 states have call successors, (41), 5 states have call predecessors, (41), 5 states have return successors, (40), 10 states have call predecessors, (40), 10 states have call successors, (40) Word has length 155 [2023-12-20 00:50:14,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:50:14,305 INFO L225 Difference]: With dead ends: 21329 [2023-12-20 00:50:14,305 INFO L226 Difference]: Without dead ends: 12381 [2023-12-20 00:50:14,317 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 395 GetRequests, 336 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 965 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=555, Invalid=3105, Unknown=0, NotChecked=0, Total=3660 [2023-12-20 00:50:14,318 INFO L413 NwaCegarLoop]: 349 mSDtfsCounter, 1691 mSDsluCounter, 2410 mSDsCounter, 0 mSdLazyCounter, 1292 mSolverCounterSat, 567 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1691 SdHoareTripleChecker+Valid, 2759 SdHoareTripleChecker+Invalid, 1859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 567 IncrementalHoareTripleChecker+Valid, 1292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-20 00:50:14,318 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1691 Valid, 2759 Invalid, 1859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [567 Valid, 1292 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-20 00:50:14,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12381 states. [2023-12-20 00:50:15,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12381 to 12223. [2023-12-20 00:50:15,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12223 states, 9175 states have (on average 1.2941689373297003) internal successors, (11874), 9255 states have internal predecessors, (11874), 1934 states have call successors, (1934), 1113 states have call predecessors, (1934), 1113 states have return successors, (1934), 1854 states have call predecessors, (1934), 1934 states have call successors, (1934) [2023-12-20 00:50:15,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12223 states to 12223 states and 15742 transitions. [2023-12-20 00:50:15,824 INFO L78 Accepts]: Start accepts. Automaton has 12223 states and 15742 transitions. Word has length 155 [2023-12-20 00:50:15,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:50:15,825 INFO L495 AbstractCegarLoop]: Abstraction has 12223 states and 15742 transitions. [2023-12-20 00:50:15,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 9.16) internal successors, (229), 25 states have internal predecessors, (229), 10 states have call successors, (41), 5 states have call predecessors, (41), 5 states have return successors, (40), 10 states have call predecessors, (40), 10 states have call successors, (40) [2023-12-20 00:50:15,825 INFO L276 IsEmpty]: Start isEmpty. Operand 12223 states and 15742 transitions. [2023-12-20 00:50:15,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2023-12-20 00:50:15,830 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:50:15,831 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:50:15,841 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-20 00:50:16,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 00:50:16,037 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:50:16,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:50:16,037 INFO L85 PathProgramCache]: Analyzing trace with hash 1657623740, now seen corresponding path program 1 times [2023-12-20 00:50:16,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:50:16,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008322541] [2023-12-20 00:50:16,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:50:16,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:50:16,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:16,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-20 00:50:16,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:16,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-20 00:50:16,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:16,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-20 00:50:16,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:16,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-20 00:50:16,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:16,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-20 00:50:16,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:16,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-20 00:50:16,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:16,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-20 00:50:16,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:16,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-20 00:50:16,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:16,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-20 00:50:16,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:16,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-12-20 00:50:16,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:16,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-12-20 00:50:16,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:16,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-12-20 00:50:16,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:16,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-20 00:50:16,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:16,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2023-12-20 00:50:16,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:16,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2023-12-20 00:50:16,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:16,208 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 19 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-12-20 00:50:16,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:50:16,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008322541] [2023-12-20 00:50:16,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008322541] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 00:50:16,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1470346034] [2023-12-20 00:50:16,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:50:16,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 00:50:16,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 00:50:16,209 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 00:50:16,234 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-20 00:50:16,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:16,352 INFO L262 TraceCheckSpWp]: Trace formula consists of 670 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-20 00:50:16,355 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 00:50:16,759 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 57 proven. 23 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-20 00:50:16,759 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 00:50:16,997 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 13 proven. 11 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2023-12-20 00:50:16,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1470346034] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 00:50:16,997 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 00:50:16,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 20 [2023-12-20 00:50:16,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411897971] [2023-12-20 00:50:16,998 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 00:50:17,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-20 00:50:17,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:50:17,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-20 00:50:17,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=318, Unknown=0, NotChecked=0, Total=380 [2023-12-20 00:50:17,002 INFO L87 Difference]: Start difference. First operand 12223 states and 15742 transitions. Second operand has 20 states, 20 states have (on average 12.75) internal successors, (255), 19 states have internal predecessors, (255), 11 states have call successors, (40), 6 states have call predecessors, (40), 7 states have return successors, (39), 12 states have call predecessors, (39), 11 states have call successors, (39) [2023-12-20 00:50:20,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:50:20,722 INFO L93 Difference]: Finished difference Result 27257 states and 36062 transitions. [2023-12-20 00:50:20,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-12-20 00:50:20,723 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 12.75) internal successors, (255), 19 states have internal predecessors, (255), 11 states have call successors, (40), 6 states have call predecessors, (40), 7 states have return successors, (39), 12 states have call predecessors, (39), 11 states have call successors, (39) Word has length 156 [2023-12-20 00:50:20,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:50:20,762 INFO L225 Difference]: With dead ends: 27257 [2023-12-20 00:50:20,762 INFO L226 Difference]: Without dead ends: 15180 [2023-12-20 00:50:20,775 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 394 GetRequests, 338 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 764 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=727, Invalid=2579, Unknown=0, NotChecked=0, Total=3306 [2023-12-20 00:50:20,779 INFO L413 NwaCegarLoop]: 398 mSDtfsCounter, 1398 mSDsluCounter, 3257 mSDsCounter, 0 mSdLazyCounter, 1566 mSolverCounterSat, 436 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1398 SdHoareTripleChecker+Valid, 3655 SdHoareTripleChecker+Invalid, 2002 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 436 IncrementalHoareTripleChecker+Valid, 1566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-20 00:50:20,779 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1398 Valid, 3655 Invalid, 2002 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [436 Valid, 1566 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-20 00:50:20,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15180 states. [2023-12-20 00:50:22,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15180 to 12101. [2023-12-20 00:50:22,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12101 states, 9096 states have (on average 1.2817722075637643) internal successors, (11659), 9173 states have internal predecessors, (11659), 1903 states have call successors, (1903), 1101 states have call predecessors, (1903), 1101 states have return successors, (1903), 1826 states have call predecessors, (1903), 1903 states have call successors, (1903) [2023-12-20 00:50:22,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12101 states to 12101 states and 15465 transitions. [2023-12-20 00:50:22,636 INFO L78 Accepts]: Start accepts. Automaton has 12101 states and 15465 transitions. Word has length 156 [2023-12-20 00:50:22,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:50:22,637 INFO L495 AbstractCegarLoop]: Abstraction has 12101 states and 15465 transitions. [2023-12-20 00:50:22,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 12.75) internal successors, (255), 19 states have internal predecessors, (255), 11 states have call successors, (40), 6 states have call predecessors, (40), 7 states have return successors, (39), 12 states have call predecessors, (39), 11 states have call successors, (39) [2023-12-20 00:50:22,637 INFO L276 IsEmpty]: Start isEmpty. Operand 12101 states and 15465 transitions. [2023-12-20 00:50:22,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2023-12-20 00:50:22,642 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:50:22,642 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:50:22,649 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-20 00:50:22,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2023-12-20 00:50:22,849 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:50:22,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:50:22,849 INFO L85 PathProgramCache]: Analyzing trace with hash -519257889, now seen corresponding path program 1 times [2023-12-20 00:50:22,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:50:22,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092796189] [2023-12-20 00:50:22,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:50:22,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:50:22,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:22,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-20 00:50:22,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:22,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-20 00:50:22,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:22,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-20 00:50:22,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:22,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-20 00:50:22,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:22,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-20 00:50:22,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:22,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-20 00:50:22,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:22,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-20 00:50:22,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:22,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-20 00:50:22,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:22,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-20 00:50:22,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:22,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-12-20 00:50:22,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:22,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-20 00:50:22,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:22,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-20 00:50:22,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:22,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-12-20 00:50:22,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:22,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-12-20 00:50:22,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:22,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-20 00:50:22,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:22,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2023-12-20 00:50:22,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:22,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2023-12-20 00:50:22,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:22,990 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2023-12-20 00:50:22,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:50:22,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092796189] [2023-12-20 00:50:22,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092796189] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:50:22,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:50:22,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 00:50:22,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290874541] [2023-12-20 00:50:22,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:50:22,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 00:50:22,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:50:22,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 00:50:22,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 00:50:22,993 INFO L87 Difference]: Start difference. First operand 12101 states and 15465 transitions. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 6 states have internal predecessors, (87), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-20 00:50:25,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:50:25,987 INFO L93 Difference]: Finished difference Result 28827 states and 37481 transitions. [2023-12-20 00:50:25,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-20 00:50:25,988 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 6 states have internal predecessors, (87), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) Word has length 166 [2023-12-20 00:50:25,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:50:26,032 INFO L225 Difference]: With dead ends: 28827 [2023-12-20 00:50:26,032 INFO L226 Difference]: Without dead ends: 19519 [2023-12-20 00:50:26,044 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-12-20 00:50:26,045 INFO L413 NwaCegarLoop]: 371 mSDtfsCounter, 253 mSDsluCounter, 1643 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 267 SdHoareTripleChecker+Valid, 2014 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 00:50:26,045 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [267 Valid, 2014 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 00:50:26,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19519 states. [2023-12-20 00:50:28,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19519 to 15544. [2023-12-20 00:50:28,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15544 states, 11574 states have (on average 1.2730257473647832) internal successors, (14734), 11688 states have internal predecessors, (14734), 2515 states have call successors, (2515), 1454 states have call predecessors, (2515), 1454 states have return successors, (2515), 2401 states have call predecessors, (2515), 2515 states have call successors, (2515) [2023-12-20 00:50:28,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15544 states to 15544 states and 19764 transitions. [2023-12-20 00:50:28,561 INFO L78 Accepts]: Start accepts. Automaton has 15544 states and 19764 transitions. Word has length 166 [2023-12-20 00:50:28,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:50:28,561 INFO L495 AbstractCegarLoop]: Abstraction has 15544 states and 19764 transitions. [2023-12-20 00:50:28,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 6 states have internal predecessors, (87), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2023-12-20 00:50:28,562 INFO L276 IsEmpty]: Start isEmpty. Operand 15544 states and 19764 transitions. [2023-12-20 00:50:28,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2023-12-20 00:50:28,568 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:50:28,568 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:50:28,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2023-12-20 00:50:28,569 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:50:28,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:50:28,569 INFO L85 PathProgramCache]: Analyzing trace with hash -1777537642, now seen corresponding path program 1 times [2023-12-20 00:50:28,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:50:28,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303716319] [2023-12-20 00:50:28,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:50:28,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:50:28,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:28,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-20 00:50:28,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:28,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-20 00:50:28,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:28,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-20 00:50:28,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:28,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-20 00:50:28,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:28,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-20 00:50:28,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:28,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-20 00:50:28,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:28,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-20 00:50:28,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:28,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-20 00:50:28,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:28,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-20 00:50:28,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:28,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-12-20 00:50:28,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:28,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-20 00:50:28,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:28,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-20 00:50:28,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:28,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-12-20 00:50:28,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:28,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-12-20 00:50:28,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:28,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-12-20 00:50:28,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:28,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-12-20 00:50:28,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:28,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2023-12-20 00:50:28,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:28,738 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 19 proven. 11 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2023-12-20 00:50:28,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:50:28,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303716319] [2023-12-20 00:50:28,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303716319] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 00:50:28,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [87143885] [2023-12-20 00:50:28,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:50:28,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 00:50:28,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 00:50:28,739 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 00:50:28,741 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-20 00:50:28,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:28,892 INFO L262 TraceCheckSpWp]: Trace formula consists of 702 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-20 00:50:28,895 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 00:50:28,984 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 62 proven. 4 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-12-20 00:50:28,984 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 00:50:29,094 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 19 proven. 8 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2023-12-20 00:50:29,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [87143885] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 00:50:29,095 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 00:50:29,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2023-12-20 00:50:29,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109724536] [2023-12-20 00:50:29,095 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 00:50:29,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-20 00:50:29,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:50:29,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-20 00:50:29,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2023-12-20 00:50:29,096 INFO L87 Difference]: Start difference. First operand 15544 states and 19764 transitions. Second operand has 13 states, 13 states have (on average 14.153846153846153) internal successors, (184), 12 states have internal predecessors, (184), 6 states have call successors, (39), 4 states have call predecessors, (39), 6 states have return successors, (39), 7 states have call predecessors, (39), 6 states have call successors, (39) [2023-12-20 00:50:33,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:50:33,149 INFO L93 Difference]: Finished difference Result 35055 states and 45783 transitions. [2023-12-20 00:50:33,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-20 00:50:33,150 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 14.153846153846153) internal successors, (184), 12 states have internal predecessors, (184), 6 states have call successors, (39), 4 states have call predecessors, (39), 6 states have return successors, (39), 7 states have call predecessors, (39), 6 states have call successors, (39) Word has length 167 [2023-12-20 00:50:33,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:50:33,212 INFO L225 Difference]: With dead ends: 35055 [2023-12-20 00:50:33,213 INFO L226 Difference]: Without dead ends: 19679 [2023-12-20 00:50:33,231 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 403 GetRequests, 366 SyntacticMatches, 4 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=252, Invalid=938, Unknown=0, NotChecked=0, Total=1190 [2023-12-20 00:50:33,231 INFO L413 NwaCegarLoop]: 356 mSDtfsCounter, 1602 mSDsluCounter, 2231 mSDsCounter, 0 mSdLazyCounter, 620 mSolverCounterSat, 566 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1602 SdHoareTripleChecker+Valid, 2587 SdHoareTripleChecker+Invalid, 1186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 566 IncrementalHoareTripleChecker+Valid, 620 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-20 00:50:33,231 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1602 Valid, 2587 Invalid, 1186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [566 Valid, 620 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-20 00:50:33,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19679 states. [2023-12-20 00:50:35,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19679 to 15828. [2023-12-20 00:50:35,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15828 states, 11814 states have (on average 1.2699339766378872) internal successors, (15003), 11926 states have internal predecessors, (15003), 2537 states have call successors, (2537), 1476 states have call predecessors, (2537), 1476 states have return successors, (2537), 2425 states have call predecessors, (2537), 2537 states have call successors, (2537) [2023-12-20 00:50:35,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15828 states to 15828 states and 20077 transitions. [2023-12-20 00:50:35,983 INFO L78 Accepts]: Start accepts. Automaton has 15828 states and 20077 transitions. Word has length 167 [2023-12-20 00:50:35,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:50:35,983 INFO L495 AbstractCegarLoop]: Abstraction has 15828 states and 20077 transitions. [2023-12-20 00:50:35,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 14.153846153846153) internal successors, (184), 12 states have internal predecessors, (184), 6 states have call successors, (39), 4 states have call predecessors, (39), 6 states have return successors, (39), 7 states have call predecessors, (39), 6 states have call successors, (39) [2023-12-20 00:50:35,983 INFO L276 IsEmpty]: Start isEmpty. Operand 15828 states and 20077 transitions. [2023-12-20 00:50:35,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2023-12-20 00:50:35,990 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:50:35,990 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:50:35,998 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-20 00:50:36,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-12-20 00:50:36,192 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:50:36,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:50:36,193 INFO L85 PathProgramCache]: Analyzing trace with hash 303803725, now seen corresponding path program 1 times [2023-12-20 00:50:36,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:50:36,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595811438] [2023-12-20 00:50:36,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:50:36,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:50:36,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:36,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-20 00:50:36,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:36,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-20 00:50:36,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:36,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-20 00:50:36,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:36,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-20 00:50:36,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:36,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-20 00:50:36,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:36,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-20 00:50:36,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:36,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-20 00:50:36,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:36,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-20 00:50:36,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:36,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-20 00:50:36,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:36,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-20 00:50:36,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:36,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-12-20 00:50:36,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:36,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-12-20 00:50:36,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:36,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-12-20 00:50:36,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:36,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2023-12-20 00:50:36,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:36,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2023-12-20 00:50:36,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:36,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-20 00:50:36,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:36,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2023-12-20 00:50:36,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:36,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2023-12-20 00:50:36,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:36,811 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 29 proven. 3 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2023-12-20 00:50:36,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:50:36,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595811438] [2023-12-20 00:50:36,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595811438] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 00:50:36,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [617105910] [2023-12-20 00:50:36,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:50:36,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 00:50:36,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 00:50:36,825 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 00:50:36,848 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-20 00:50:36,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:36,978 INFO L262 TraceCheckSpWp]: Trace formula consists of 720 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-20 00:50:36,980 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 00:50:37,084 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2023-12-20 00:50:37,084 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 00:50:37,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [617105910] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:50:37,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 00:50:37,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2023-12-20 00:50:37,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681937686] [2023-12-20 00:50:37,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:50:37,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 00:50:37,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:50:37,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 00:50:37,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2023-12-20 00:50:37,085 INFO L87 Difference]: Start difference. First operand 15828 states and 20077 transitions. Second operand has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 6 states have internal predecessors, (110), 3 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2023-12-20 00:50:40,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:50:40,401 INFO L93 Difference]: Finished difference Result 34196 states and 44353 transitions. [2023-12-20 00:50:40,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-20 00:50:40,402 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 6 states have internal predecessors, (110), 3 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) Word has length 176 [2023-12-20 00:50:40,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:50:40,487 INFO L225 Difference]: With dead ends: 34196 [2023-12-20 00:50:40,487 INFO L226 Difference]: Without dead ends: 18753 [2023-12-20 00:50:40,502 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2023-12-20 00:50:40,503 INFO L413 NwaCegarLoop]: 352 mSDtfsCounter, 525 mSDsluCounter, 1007 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 525 SdHoareTripleChecker+Valid, 1359 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-20 00:50:40,503 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [525 Valid, 1359 Invalid, 356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-20 00:50:40,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18753 states. [2023-12-20 00:50:43,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18753 to 15828. [2023-12-20 00:50:43,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15828 states, 11814 states have (on average 1.2624851870661926) internal successors, (14915), 11926 states have internal predecessors, (14915), 2537 states have call successors, (2537), 1476 states have call predecessors, (2537), 1476 states have return successors, (2537), 2425 states have call predecessors, (2537), 2537 states have call successors, (2537) [2023-12-20 00:50:43,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15828 states to 15828 states and 19989 transitions. [2023-12-20 00:50:43,061 INFO L78 Accepts]: Start accepts. Automaton has 15828 states and 19989 transitions. Word has length 176 [2023-12-20 00:50:43,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:50:43,061 INFO L495 AbstractCegarLoop]: Abstraction has 15828 states and 19989 transitions. [2023-12-20 00:50:43,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 6 states have internal predecessors, (110), 3 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2023-12-20 00:50:43,061 INFO L276 IsEmpty]: Start isEmpty. Operand 15828 states and 19989 transitions. [2023-12-20 00:50:43,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2023-12-20 00:50:43,068 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:50:43,068 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:50:43,090 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-20 00:50:43,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2023-12-20 00:50:43,274 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:50:43,274 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:50:43,274 INFO L85 PathProgramCache]: Analyzing trace with hash -611892066, now seen corresponding path program 1 times [2023-12-20 00:50:43,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:50:43,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668226479] [2023-12-20 00:50:43,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:50:43,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:50:43,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:43,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-20 00:50:43,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:43,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-20 00:50:43,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:43,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-20 00:50:43,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:43,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-20 00:50:43,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:43,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-20 00:50:43,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:43,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-20 00:50:43,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:43,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-20 00:50:43,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:43,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-20 00:50:43,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:43,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-20 00:50:43,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:43,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-20 00:50:43,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:43,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-20 00:50:43,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:43,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-20 00:50:43,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:43,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-12-20 00:50:43,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:43,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2023-12-20 00:50:43,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:43,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2023-12-20 00:50:43,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:43,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2023-12-20 00:50:43,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:43,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2023-12-20 00:50:43,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:43,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2023-12-20 00:50:43,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:43,612 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 19 proven. 22 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2023-12-20 00:50:43,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:50:43,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668226479] [2023-12-20 00:50:43,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668226479] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 00:50:43,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [154781151] [2023-12-20 00:50:43,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:50:43,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 00:50:43,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 00:50:43,614 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 00:50:43,615 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-20 00:50:43,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:43,785 INFO L262 TraceCheckSpWp]: Trace formula consists of 726 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-20 00:50:43,801 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 00:50:44,011 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 60 proven. 56 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-12-20 00:50:44,011 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 00:50:44,207 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 19 proven. 22 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2023-12-20 00:50:44,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [154781151] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 00:50:44,207 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 00:50:44,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 12 [2023-12-20 00:50:44,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999619793] [2023-12-20 00:50:44,208 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 00:50:44,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-20 00:50:44,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:50:44,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-20 00:50:44,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-12-20 00:50:44,209 INFO L87 Difference]: Start difference. First operand 15828 states and 19989 transitions. Second operand has 12 states, 12 states have (on average 14.416666666666666) internal successors, (173), 11 states have internal predecessors, (173), 5 states have call successors, (37), 4 states have call predecessors, (37), 7 states have return successors, (37), 6 states have call predecessors, (37), 5 states have call successors, (37) [2023-12-20 00:50:47,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:50:47,523 INFO L93 Difference]: Finished difference Result 26121 states and 33228 transitions. [2023-12-20 00:50:47,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-20 00:50:47,524 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 14.416666666666666) internal successors, (173), 11 states have internal predecessors, (173), 5 states have call successors, (37), 4 states have call predecessors, (37), 7 states have return successors, (37), 6 states have call predecessors, (37), 5 states have call successors, (37) Word has length 180 [2023-12-20 00:50:47,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:50:47,563 INFO L225 Difference]: With dead ends: 26121 [2023-12-20 00:50:47,563 INFO L226 Difference]: Without dead ends: 16394 [2023-12-20 00:50:47,578 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 417 GetRequests, 389 SyntacticMatches, 6 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=140, Invalid=412, Unknown=0, NotChecked=0, Total=552 [2023-12-20 00:50:47,578 INFO L413 NwaCegarLoop]: 605 mSDtfsCounter, 620 mSDsluCounter, 2762 mSDsCounter, 0 mSdLazyCounter, 731 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 632 SdHoareTripleChecker+Valid, 3367 SdHoareTripleChecker+Invalid, 815 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 731 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-20 00:50:47,578 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [632 Valid, 3367 Invalid, 815 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 731 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-20 00:50:47,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16394 states. [2023-12-20 00:50:50,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16394 to 15828. [2023-12-20 00:50:50,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15828 states, 11814 states have (on average 1.2595226003047233) internal successors, (14880), 11926 states have internal predecessors, (14880), 2537 states have call successors, (2537), 1476 states have call predecessors, (2537), 1476 states have return successors, (2537), 2425 states have call predecessors, (2537), 2537 states have call successors, (2537) [2023-12-20 00:50:50,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15828 states to 15828 states and 19954 transitions. [2023-12-20 00:50:50,108 INFO L78 Accepts]: Start accepts. Automaton has 15828 states and 19954 transitions. Word has length 180 [2023-12-20 00:50:50,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:50:50,109 INFO L495 AbstractCegarLoop]: Abstraction has 15828 states and 19954 transitions. [2023-12-20 00:50:50,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 14.416666666666666) internal successors, (173), 11 states have internal predecessors, (173), 5 states have call successors, (37), 4 states have call predecessors, (37), 7 states have return successors, (37), 6 states have call predecessors, (37), 5 states have call successors, (37) [2023-12-20 00:50:50,109 INFO L276 IsEmpty]: Start isEmpty. Operand 15828 states and 19954 transitions. [2023-12-20 00:50:50,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2023-12-20 00:50:50,115 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:50:50,115 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:50:50,132 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-20 00:50:50,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2023-12-20 00:50:50,321 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:50:50,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:50:50,321 INFO L85 PathProgramCache]: Analyzing trace with hash 423620756, now seen corresponding path program 1 times [2023-12-20 00:50:50,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:50:50,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377661362] [2023-12-20 00:50:50,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:50:50,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:50:50,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:50,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-20 00:50:50,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:50,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-20 00:50:50,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:50,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-20 00:50:50,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:50,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-20 00:50:50,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:50,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-20 00:50:50,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:50,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-20 00:50:50,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:50,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-20 00:50:50,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:50,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-20 00:50:50,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:50,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-20 00:50:50,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:50,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-20 00:50:50,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:50,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-20 00:50:50,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:50,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-20 00:50:50,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:50,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-12-20 00:50:50,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:50,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2023-12-20 00:50:50,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:50,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2023-12-20 00:50:50,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:50,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2023-12-20 00:50:50,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:50,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2023-12-20 00:50:50,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:50,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2023-12-20 00:50:50,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:50,503 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2023-12-20 00:50:50,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:50:50,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377661362] [2023-12-20 00:50:50,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377661362] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:50:50,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:50:50,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 00:50:50,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578332228] [2023-12-20 00:50:50,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:50:50,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 00:50:50,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:50:50,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 00:50:50,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 00:50:50,504 INFO L87 Difference]: Start difference. First operand 15828 states and 19954 transitions. Second operand has 7 states, 7 states have (on average 15.0) internal successors, (105), 6 states have internal predecessors, (105), 3 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-20 00:50:53,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:50:53,428 INFO L93 Difference]: Finished difference Result 26870 states and 34611 transitions. [2023-12-20 00:50:53,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-20 00:50:53,428 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 6 states have internal predecessors, (105), 3 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) Word has length 180 [2023-12-20 00:50:53,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:50:53,465 INFO L225 Difference]: With dead ends: 26870 [2023-12-20 00:50:53,465 INFO L226 Difference]: Without dead ends: 17228 [2023-12-20 00:50:53,477 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2023-12-20 00:50:53,481 INFO L413 NwaCegarLoop]: 349 mSDtfsCounter, 492 mSDsluCounter, 1172 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 495 SdHoareTripleChecker+Valid, 1521 SdHoareTripleChecker+Invalid, 407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-20 00:50:53,481 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [495 Valid, 1521 Invalid, 407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 288 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-20 00:50:53,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17228 states. [2023-12-20 00:50:55,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17228 to 15821. [2023-12-20 00:50:55,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15821 states, 11807 states have (on average 1.258490725840603) internal successors, (14859), 11919 states have internal predecessors, (14859), 2537 states have call successors, (2537), 1476 states have call predecessors, (2537), 1476 states have return successors, (2537), 2425 states have call predecessors, (2537), 2537 states have call successors, (2537) [2023-12-20 00:50:55,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15821 states to 15821 states and 19933 transitions. [2023-12-20 00:50:55,991 INFO L78 Accepts]: Start accepts. Automaton has 15821 states and 19933 transitions. Word has length 180 [2023-12-20 00:50:55,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:50:55,992 INFO L495 AbstractCegarLoop]: Abstraction has 15821 states and 19933 transitions. [2023-12-20 00:50:55,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 6 states have internal predecessors, (105), 3 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-20 00:50:55,992 INFO L276 IsEmpty]: Start isEmpty. Operand 15821 states and 19933 transitions. [2023-12-20 00:50:55,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2023-12-20 00:50:55,998 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:50:55,998 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:50:55,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2023-12-20 00:50:55,998 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:50:55,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:50:55,999 INFO L85 PathProgramCache]: Analyzing trace with hash 1239355003, now seen corresponding path program 1 times [2023-12-20 00:50:55,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:50:55,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910249760] [2023-12-20 00:50:55,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:50:55,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:50:56,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:56,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-20 00:50:56,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:56,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-20 00:50:56,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:56,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-20 00:50:56,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:56,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-20 00:50:56,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:56,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-20 00:50:56,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:56,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-20 00:50:56,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:56,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-20 00:50:56,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:56,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-20 00:50:56,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:56,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-20 00:50:56,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:56,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-20 00:50:56,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:56,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-20 00:50:56,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:56,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-12-20 00:50:56,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:56,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-12-20 00:50:56,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:56,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-20 00:50:56,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:56,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2023-12-20 00:50:56,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:56,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2023-12-20 00:50:56,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:56,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2023-12-20 00:50:56,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:56,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2023-12-20 00:50:56,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:50:56,075 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2023-12-20 00:50:56,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:50:56,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910249760] [2023-12-20 00:50:56,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910249760] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:50:56,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:50:56,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 00:50:56,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721679582] [2023-12-20 00:50:56,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:50:56,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 00:50:56,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:50:56,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 00:50:56,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 00:50:56,077 INFO L87 Difference]: Start difference. First operand 15821 states and 19933 transitions. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-20 00:50:58,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:50:58,616 INFO L93 Difference]: Finished difference Result 26783 states and 34141 transitions. [2023-12-20 00:50:58,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 00:50:58,617 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 182 [2023-12-20 00:50:58,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:50:58,650 INFO L225 Difference]: With dead ends: 26783 [2023-12-20 00:50:58,650 INFO L226 Difference]: Without dead ends: 17114 [2023-12-20 00:50:58,661 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 00:50:58,661 INFO L413 NwaCegarLoop]: 382 mSDtfsCounter, 195 mSDsluCounter, 599 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 981 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 00:50:58,661 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [195 Valid, 981 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 00:50:58,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17114 states. [2023-12-20 00:51:01,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17114 to 16456. [2023-12-20 00:51:01,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16456 states, 12262 states have (on average 1.2586038166693851) internal successors, (15433), 12380 states have internal predecessors, (15433), 2652 states have call successors, (2652), 1541 states have call predecessors, (2652), 1541 states have return successors, (2652), 2534 states have call predecessors, (2652), 2652 states have call successors, (2652) [2023-12-20 00:51:01,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16456 states to 16456 states and 20737 transitions. [2023-12-20 00:51:01,235 INFO L78 Accepts]: Start accepts. Automaton has 16456 states and 20737 transitions. Word has length 182 [2023-12-20 00:51:01,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:51:01,235 INFO L495 AbstractCegarLoop]: Abstraction has 16456 states and 20737 transitions. [2023-12-20 00:51:01,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-20 00:51:01,235 INFO L276 IsEmpty]: Start isEmpty. Operand 16456 states and 20737 transitions. [2023-12-20 00:51:01,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2023-12-20 00:51:01,240 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:51:01,240 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:51:01,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2023-12-20 00:51:01,240 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:51:01,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:51:01,241 INFO L85 PathProgramCache]: Analyzing trace with hash -1976028611, now seen corresponding path program 1 times [2023-12-20 00:51:01,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:51:01,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082188943] [2023-12-20 00:51:01,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:51:01,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:51:01,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:51:01,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-20 00:51:01,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:51:01,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-20 00:51:01,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:51:01,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-20 00:51:01,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:51:01,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-20 00:51:01,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:51:01,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-20 00:51:01,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:51:01,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-20 00:51:01,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:51:01,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-20 00:51:01,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:51:01,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-20 00:51:01,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:51:01,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-20 00:51:01,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:51:01,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-20 00:51:01,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:51:01,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-12-20 00:51:01,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:51:01,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-12-20 00:51:01,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:51:01,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-12-20 00:51:01,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:51:01,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2023-12-20 00:51:01,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:51:01,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2023-12-20 00:51:01,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:51:01,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-20 00:51:01,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:51:01,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2023-12-20 00:51:01,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:51:01,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2023-12-20 00:51:01,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:51:01,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2023-12-20 00:51:01,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:51:01,537 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 29 proven. 3 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2023-12-20 00:51:01,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:51:01,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082188943] [2023-12-20 00:51:01,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082188943] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 00:51:01,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [666734855] [2023-12-20 00:51:01,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:51:01,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 00:51:01,537 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 00:51:01,538 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 00:51:01,564 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-20 00:51:01,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:51:01,704 INFO L262 TraceCheckSpWp]: Trace formula consists of 738 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-20 00:51:01,707 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 00:51:01,823 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 90 proven. 4 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-12-20 00:51:01,823 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 00:51:01,941 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 21 proven. 4 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2023-12-20 00:51:01,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [666734855] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 00:51:01,942 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 00:51:01,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 15 [2023-12-20 00:51:01,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507046650] [2023-12-20 00:51:01,942 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 00:51:01,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-20 00:51:01,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:51:01,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-20 00:51:01,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2023-12-20 00:51:01,943 INFO L87 Difference]: Start difference. First operand 16456 states and 20737 transitions. Second operand has 15 states, 15 states have (on average 12.866666666666667) internal successors, (193), 14 states have internal predecessors, (193), 6 states have call successors, (44), 4 states have call predecessors, (44), 6 states have return successors, (44), 7 states have call predecessors, (44), 6 states have call successors, (44) [2023-12-20 00:51:06,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:51:06,908 INFO L93 Difference]: Finished difference Result 36324 states and 46833 transitions. [2023-12-20 00:51:06,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-12-20 00:51:06,909 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 12.866666666666667) internal successors, (193), 14 states have internal predecessors, (193), 6 states have call successors, (44), 4 states have call predecessors, (44), 6 states have return successors, (44), 7 states have call predecessors, (44), 6 states have call successors, (44) Word has length 184 [2023-12-20 00:51:06,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:51:06,948 INFO L225 Difference]: With dead ends: 36324 [2023-12-20 00:51:06,948 INFO L226 Difference]: Without dead ends: 20342 [2023-12-20 00:51:06,962 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 457 GetRequests, 407 SyntacticMatches, 4 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 563 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=333, Invalid=1923, Unknown=0, NotChecked=0, Total=2256 [2023-12-20 00:51:06,962 INFO L413 NwaCegarLoop]: 453 mSDtfsCounter, 957 mSDsluCounter, 4119 mSDsCounter, 0 mSdLazyCounter, 2009 mSolverCounterSat, 309 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 957 SdHoareTripleChecker+Valid, 4572 SdHoareTripleChecker+Invalid, 2318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 309 IncrementalHoareTripleChecker+Valid, 2009 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-20 00:51:06,963 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [957 Valid, 4572 Invalid, 2318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [309 Valid, 2009 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-20 00:51:06,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20342 states. [2023-12-20 00:51:09,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20342 to 16664. [2023-12-20 00:51:09,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16664 states, 12414 states have (on average 1.258417915256968) internal successors, (15622), 12536 states have internal predecessors, (15622), 2684 states have call successors, (2684), 1565 states have call predecessors, (2684), 1565 states have return successors, (2684), 2562 states have call predecessors, (2684), 2684 states have call successors, (2684) [2023-12-20 00:51:09,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16664 states to 16664 states and 20990 transitions. [2023-12-20 00:51:09,678 INFO L78 Accepts]: Start accepts. Automaton has 16664 states and 20990 transitions. Word has length 184 [2023-12-20 00:51:09,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:51:09,678 INFO L495 AbstractCegarLoop]: Abstraction has 16664 states and 20990 transitions. [2023-12-20 00:51:09,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 12.866666666666667) internal successors, (193), 14 states have internal predecessors, (193), 6 states have call successors, (44), 4 states have call predecessors, (44), 6 states have return successors, (44), 7 states have call predecessors, (44), 6 states have call successors, (44) [2023-12-20 00:51:09,678 INFO L276 IsEmpty]: Start isEmpty. Operand 16664 states and 20990 transitions. [2023-12-20 00:51:09,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2023-12-20 00:51:09,683 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:51:09,683 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:51:09,689 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-20 00:51:09,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2023-12-20 00:51:09,888 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:51:09,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:51:09,888 INFO L85 PathProgramCache]: Analyzing trace with hash -729153234, now seen corresponding path program 1 times [2023-12-20 00:51:09,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:51:09,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333551681] [2023-12-20 00:51:09,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:51:09,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:51:09,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:51:10,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-20 00:51:10,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:51:10,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-20 00:51:10,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:51:10,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-20 00:51:10,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:51:10,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-20 00:51:10,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:51:10,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-20 00:51:10,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:51:10,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-20 00:51:10,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:51:10,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-20 00:51:10,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:51:10,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-20 00:51:10,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:51:10,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-20 00:51:10,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:51:10,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-20 00:51:10,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:51:10,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-20 00:51:10,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:51:10,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-20 00:51:10,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:51:10,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-12-20 00:51:10,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:51:10,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2023-12-20 00:51:10,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:51:10,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2023-12-20 00:51:10,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:51:10,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2023-12-20 00:51:10,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:51:10,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2023-12-20 00:51:10,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:51:10,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2023-12-20 00:51:10,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:51:10,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2023-12-20 00:51:10,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:51:10,347 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 11 proven. 24 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2023-12-20 00:51:10,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:51:10,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333551681] [2023-12-20 00:51:10,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333551681] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 00:51:10,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [463532991] [2023-12-20 00:51:10,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:51:10,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 00:51:10,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 00:51:10,348 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 00:51:10,368 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-20 00:51:10,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:51:10,493 INFO L262 TraceCheckSpWp]: Trace formula consists of 742 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-20 00:51:10,495 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 00:51:10,693 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 40 proven. 83 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-12-20 00:51:10,693 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 00:51:10,837 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 18 proven. 23 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2023-12-20 00:51:10,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [463532991] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 00:51:10,837 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 00:51:10,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 17 [2023-12-20 00:51:10,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568597548] [2023-12-20 00:51:10,837 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 00:51:10,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-20 00:51:10,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:51:10,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-20 00:51:10,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2023-12-20 00:51:10,838 INFO L87 Difference]: Start difference. First operand 16664 states and 20990 transitions. Second operand has 17 states, 17 states have (on average 13.058823529411764) internal successors, (222), 15 states have internal predecessors, (222), 7 states have call successors, (55), 4 states have call predecessors, (55), 7 states have return successors, (54), 9 states have call predecessors, (54), 7 states have call successors, (54) [2023-12-20 00:51:17,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:51:17,103 INFO L93 Difference]: Finished difference Result 35037 states and 45117 transitions. [2023-12-20 00:51:17,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2023-12-20 00:51:17,104 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 13.058823529411764) internal successors, (222), 15 states have internal predecessors, (222), 7 states have call successors, (55), 4 states have call predecessors, (55), 7 states have return successors, (54), 9 states have call predecessors, (54), 7 states have call successors, (54) Word has length 188 [2023-12-20 00:51:17,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:51:17,161 INFO L225 Difference]: With dead ends: 35037 [2023-12-20 00:51:17,161 INFO L226 Difference]: Without dead ends: 24189 [2023-12-20 00:51:17,176 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 493 GetRequests, 418 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1674 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=963, Invalid=4737, Unknown=0, NotChecked=0, Total=5700 [2023-12-20 00:51:17,177 INFO L413 NwaCegarLoop]: 560 mSDtfsCounter, 2238 mSDsluCounter, 5027 mSDsCounter, 0 mSdLazyCounter, 1491 mSolverCounterSat, 955 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2238 SdHoareTripleChecker+Valid, 5587 SdHoareTripleChecker+Invalid, 2446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 955 IncrementalHoareTripleChecker+Valid, 1491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-20 00:51:17,178 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2238 Valid, 5587 Invalid, 2446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [955 Valid, 1491 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-20 00:51:17,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24189 states. [2023-12-20 00:51:20,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24189 to 18272. [2023-12-20 00:51:20,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18272 states, 13610 states have (on average 1.2534166054371785) internal successors, (17059), 13744 states have internal predecessors, (17059), 2901 states have call successors, (2901), 1760 states have call predecessors, (2901), 1760 states have return successors, (2901), 2767 states have call predecessors, (2901), 2901 states have call successors, (2901) [2023-12-20 00:51:20,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18272 states to 18272 states and 22861 transitions. [2023-12-20 00:51:20,435 INFO L78 Accepts]: Start accepts. Automaton has 18272 states and 22861 transitions. Word has length 188 [2023-12-20 00:51:20,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:51:20,435 INFO L495 AbstractCegarLoop]: Abstraction has 18272 states and 22861 transitions. [2023-12-20 00:51:20,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 13.058823529411764) internal successors, (222), 15 states have internal predecessors, (222), 7 states have call successors, (55), 4 states have call predecessors, (55), 7 states have return successors, (54), 9 states have call predecessors, (54), 7 states have call successors, (54) [2023-12-20 00:51:20,435 INFO L276 IsEmpty]: Start isEmpty. Operand 18272 states and 22861 transitions. [2023-12-20 00:51:20,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2023-12-20 00:51:20,441 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:51:20,441 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:51:20,446 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-12-20 00:51:20,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2023-12-20 00:51:20,646 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:51:20,646 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:51:20,647 INFO L85 PathProgramCache]: Analyzing trace with hash 814379766, now seen corresponding path program 1 times [2023-12-20 00:51:20,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:51:20,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227087164] [2023-12-20 00:51:20,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:51:20,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:51:20,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:51:21,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-20 00:51:21,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:51:21,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-20 00:51:21,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:51:21,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-20 00:51:21,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:51:21,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-20 00:51:21,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:51:21,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-20 00:51:21,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:51:21,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-20 00:51:21,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:51:21,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-20 00:51:21,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:51:21,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-20 00:51:21,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:51:21,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-12-20 00:51:21,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:51:21,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-20 00:51:21,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:51:21,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-12-20 00:51:21,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:51:21,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-12-20 00:51:21,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:51:21,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-20 00:51:21,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:51:21,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-12-20 00:51:21,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:51:21,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-12-20 00:51:21,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:51:21,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-20 00:51:21,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:51:21,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2023-12-20 00:51:21,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:51:21,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2023-12-20 00:51:21,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:51:21,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2023-12-20 00:51:21,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:51:21,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2023-12-20 00:51:21,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:51:21,167 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 26 proven. 4 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2023-12-20 00:51:21,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:51:21,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227087164] [2023-12-20 00:51:21,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227087164] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 00:51:21,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1309186914] [2023-12-20 00:51:21,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:51:21,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 00:51:21,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 00:51:21,173 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 00:51:21,198 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-20 00:51:21,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:51:21,328 INFO L262 TraceCheckSpWp]: Trace formula consists of 756 conjuncts, 49 conjunts are in the unsatisfiable core [2023-12-20 00:51:21,331 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 00:51:21,862 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 107 proven. 12 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2023-12-20 00:51:21,862 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 00:51:22,348 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 26 proven. 10 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2023-12-20 00:51:22,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1309186914] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 00:51:22,349 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 00:51:22,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 13] total 28 [2023-12-20 00:51:22,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57882015] [2023-12-20 00:51:22,349 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 00:51:22,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-20 00:51:22,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:51:22,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-20 00:51:22,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=661, Unknown=0, NotChecked=0, Total=756 [2023-12-20 00:51:22,350 INFO L87 Difference]: Start difference. First operand 18272 states and 22861 transitions. Second operand has 28 states, 27 states have (on average 9.592592592592593) internal successors, (259), 28 states have internal predecessors, (259), 11 states have call successors, (56), 5 states have call predecessors, (56), 7 states have return successors, (55), 10 states have call predecessors, (55), 11 states have call successors, (55) [2023-12-20 00:51:28,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:51:28,659 INFO L93 Difference]: Finished difference Result 35305 states and 44383 transitions. [2023-12-20 00:51:28,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2023-12-20 00:51:28,659 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 9.592592592592593) internal successors, (259), 28 states have internal predecessors, (259), 11 states have call successors, (56), 5 states have call predecessors, (56), 7 states have return successors, (55), 10 states have call predecessors, (55), 11 states have call successors, (55) Word has length 192 [2023-12-20 00:51:28,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:51:28,710 INFO L225 Difference]: With dead ends: 35305 [2023-12-20 00:51:28,711 INFO L226 Difference]: Without dead ends: 18967 [2023-12-20 00:51:28,735 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 519 GetRequests, 424 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2791 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1105, Invalid=8207, Unknown=0, NotChecked=0, Total=9312 [2023-12-20 00:51:28,738 INFO L413 NwaCegarLoop]: 491 mSDtfsCounter, 1583 mSDsluCounter, 6352 mSDsCounter, 0 mSdLazyCounter, 4179 mSolverCounterSat, 463 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1583 SdHoareTripleChecker+Valid, 6843 SdHoareTripleChecker+Invalid, 4642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 463 IncrementalHoareTripleChecker+Valid, 4179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-20 00:51:28,738 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1583 Valid, 6843 Invalid, 4642 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [463 Valid, 4179 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-20 00:51:28,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18967 states. [2023-12-20 00:51:31,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18967 to 18599. [2023-12-20 00:51:31,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18599 states, 13867 states have (on average 1.254344847479628) internal successors, (17394), 14000 states have internal predecessors, (17394), 2953 states have call successors, (2953), 1778 states have call predecessors, (2953), 1778 states have return successors, (2953), 2820 states have call predecessors, (2953), 2953 states have call successors, (2953) [2023-12-20 00:51:32,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18599 states to 18599 states and 23300 transitions. [2023-12-20 00:51:32,026 INFO L78 Accepts]: Start accepts. Automaton has 18599 states and 23300 transitions. Word has length 192 [2023-12-20 00:51:32,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:51:32,026 INFO L495 AbstractCegarLoop]: Abstraction has 18599 states and 23300 transitions. [2023-12-20 00:51:32,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 9.592592592592593) internal successors, (259), 28 states have internal predecessors, (259), 11 states have call successors, (56), 5 states have call predecessors, (56), 7 states have return successors, (55), 10 states have call predecessors, (55), 11 states have call successors, (55) [2023-12-20 00:51:32,026 INFO L276 IsEmpty]: Start isEmpty. Operand 18599 states and 23300 transitions. [2023-12-20 00:51:32,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2023-12-20 00:51:32,031 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:51:32,031 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:51:32,036 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-20 00:51:32,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 00:51:32,237 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:51:32,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:51:32,238 INFO L85 PathProgramCache]: Analyzing trace with hash 446617501, now seen corresponding path program 1 times [2023-12-20 00:51:32,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:51:32,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754096780] [2023-12-20 00:51:32,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:51:32,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:51:32,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:51:32,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-20 00:51:32,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:51:32,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-20 00:51:32,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:51:32,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-20 00:51:32,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:51:32,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-20 00:51:32,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:51:32,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-20 00:51:32,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:51:32,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-20 00:51:32,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:51:32,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-20 00:51:32,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:51:32,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-20 00:51:32,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:51:32,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-12-20 00:51:32,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:51:32,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-20 00:51:32,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:51:32,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-12-20 00:51:32,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:51:32,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-12-20 00:51:32,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:51:32,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-20 00:51:32,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:51:32,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-12-20 00:51:32,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:51:32,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2023-12-20 00:51:32,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:51:32,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2023-12-20 00:51:32,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:51:32,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-20 00:51:32,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:51:32,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2023-12-20 00:51:32,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:51:32,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2023-12-20 00:51:32,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:51:32,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2023-12-20 00:51:32,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:51:32,558 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 22 proven. 10 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2023-12-20 00:51:32,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:51:32,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754096780] [2023-12-20 00:51:32,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754096780] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 00:51:32,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [676033409] [2023-12-20 00:51:32,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:51:32,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 00:51:32,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 00:51:32,574 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 00:51:32,598 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-20 00:51:32,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:51:32,725 INFO L262 TraceCheckSpWp]: Trace formula consists of 758 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-20 00:51:32,728 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 00:51:33,087 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 103 proven. 18 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2023-12-20 00:51:33,088 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 00:51:33,512 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 19 proven. 13 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2023-12-20 00:51:33,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [676033409] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 00:51:33,513 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 00:51:33,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 23 [2023-12-20 00:51:33,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126879160] [2023-12-20 00:51:33,513 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 00:51:33,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-20 00:51:33,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:51:33,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-20 00:51:33,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=404, Unknown=0, NotChecked=0, Total=506 [2023-12-20 00:51:33,515 INFO L87 Difference]: Start difference. First operand 18599 states and 23300 transitions. Second operand has 23 states, 23 states have (on average 12.347826086956522) internal successors, (284), 23 states have internal predecessors, (284), 10 states have call successors, (55), 5 states have call predecessors, (55), 6 states have return successors, (54), 10 states have call predecessors, (54), 10 states have call successors, (54) [2023-12-20 00:51:38,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:51:38,958 INFO L93 Difference]: Finished difference Result 41394 states and 52125 transitions. [2023-12-20 00:51:38,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-12-20 00:51:38,959 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 12.347826086956522) internal successors, (284), 23 states have internal predecessors, (284), 10 states have call successors, (55), 5 states have call predecessors, (55), 6 states have return successors, (54), 10 states have call predecessors, (54), 10 states have call successors, (54) Word has length 194 [2023-12-20 00:51:38,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:51:39,023 INFO L225 Difference]: With dead ends: 41394 [2023-12-20 00:51:39,024 INFO L226 Difference]: Without dead ends: 23166 [2023-12-20 00:51:39,060 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 479 GetRequests, 423 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 946 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=669, Invalid=2637, Unknown=0, NotChecked=0, Total=3306 [2023-12-20 00:51:39,060 INFO L413 NwaCegarLoop]: 366 mSDtfsCounter, 1102 mSDsluCounter, 2758 mSDsCounter, 0 mSdLazyCounter, 2373 mSolverCounterSat, 213 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1102 SdHoareTripleChecker+Valid, 3124 SdHoareTripleChecker+Invalid, 2586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 213 IncrementalHoareTripleChecker+Valid, 2373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-20 00:51:39,060 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1102 Valid, 3124 Invalid, 2586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [213 Valid, 2373 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-20 00:51:39,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23166 states. [2023-12-20 00:51:42,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23166 to 20937. [2023-12-20 00:51:42,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20937 states, 15620 states have (on average 1.2653008962868117) internal successors, (19764), 15770 states have internal predecessors, (19764), 3314 states have call successors, (3314), 2002 states have call predecessors, (3314), 2002 states have return successors, (3314), 3164 states have call predecessors, (3314), 3314 states have call successors, (3314) [2023-12-20 00:51:42,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20937 states to 20937 states and 26392 transitions. [2023-12-20 00:51:42,863 INFO L78 Accepts]: Start accepts. Automaton has 20937 states and 26392 transitions. Word has length 194 [2023-12-20 00:51:42,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:51:42,863 INFO L495 AbstractCegarLoop]: Abstraction has 20937 states and 26392 transitions. [2023-12-20 00:51:42,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 12.347826086956522) internal successors, (284), 23 states have internal predecessors, (284), 10 states have call successors, (55), 5 states have call predecessors, (55), 6 states have return successors, (54), 10 states have call predecessors, (54), 10 states have call successors, (54) [2023-12-20 00:51:42,863 INFO L276 IsEmpty]: Start isEmpty. Operand 20937 states and 26392 transitions. [2023-12-20 00:51:42,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2023-12-20 00:51:42,867 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:51:42,867 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:51:42,873 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-12-20 00:51:43,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 00:51:43,072 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:51:43,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:51:43,072 INFO L85 PathProgramCache]: Analyzing trace with hash 1585313194, now seen corresponding path program 1 times [2023-12-20 00:51:43,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:51:43,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758249269] [2023-12-20 00:51:43,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:51:43,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:51:43,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:51:43,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-20 00:51:43,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:51:43,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-20 00:51:43,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:51:43,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-20 00:51:43,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:51:43,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-20 00:51:43,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:51:43,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-20 00:51:43,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:51:43,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-20 00:51:43,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:51:43,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-20 00:51:43,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:51:43,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-20 00:51:43,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:51:43,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-12-20 00:51:43,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:51:43,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-20 00:51:43,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:51:43,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-12-20 00:51:43,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:51:43,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-12-20 00:51:43,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:51:43,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-20 00:51:43,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:51:43,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-12-20 00:51:43,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:51:43,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2023-12-20 00:51:43,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:51:43,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2023-12-20 00:51:43,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:51:43,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2023-12-20 00:51:43,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:51:43,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2023-12-20 00:51:43,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:51:43,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2023-12-20 00:51:43,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:51:43,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2023-12-20 00:51:43,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:51:43,298 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 18 proven. 22 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2023-12-20 00:51:43,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:51:43,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758249269] [2023-12-20 00:51:43,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758249269] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 00:51:43,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [494173228] [2023-12-20 00:51:43,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:51:43,298 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 00:51:43,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 00:51:43,299 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 00:51:43,301 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-20 00:51:43,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:51:43,452 INFO L262 TraceCheckSpWp]: Trace formula consists of 776 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-20 00:51:43,455 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 00:51:43,609 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 120 proven. 31 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-12-20 00:51:43,609 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 00:51:43,831 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 38 proven. 8 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2023-12-20 00:51:43,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [494173228] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 00:51:43,831 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 00:51:43,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 10] total 16 [2023-12-20 00:51:43,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321148492] [2023-12-20 00:51:43,831 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 00:51:43,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-20 00:51:43,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:51:43,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-20 00:51:43,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2023-12-20 00:51:43,833 INFO L87 Difference]: Start difference. First operand 20937 states and 26392 transitions. Second operand has 16 states, 16 states have (on average 11.1875) internal successors, (179), 13 states have internal predecessors, (179), 4 states have call successors, (40), 4 states have call predecessors, (40), 9 states have return successors, (41), 7 states have call predecessors, (41), 4 states have call successors, (41) [2023-12-20 00:51:51,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:51:51,584 INFO L93 Difference]: Finished difference Result 52211 states and 67417 transitions. [2023-12-20 00:51:51,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-12-20 00:51:51,585 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 11.1875) internal successors, (179), 13 states have internal predecessors, (179), 4 states have call successors, (40), 4 states have call predecessors, (40), 9 states have return successors, (41), 7 states have call predecessors, (41), 4 states have call successors, (41) Word has length 196 [2023-12-20 00:51:51,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:51:51,668 INFO L225 Difference]: With dead ends: 52211 [2023-12-20 00:51:51,668 INFO L226 Difference]: Without dead ends: 32572 [2023-12-20 00:51:51,694 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 468 GetRequests, 425 SyntacticMatches, 6 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=257, Invalid=1225, Unknown=0, NotChecked=0, Total=1482 [2023-12-20 00:51:51,694 INFO L413 NwaCegarLoop]: 540 mSDtfsCounter, 1082 mSDsluCounter, 4348 mSDsCounter, 0 mSdLazyCounter, 1640 mSolverCounterSat, 346 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1091 SdHoareTripleChecker+Valid, 4888 SdHoareTripleChecker+Invalid, 1986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 346 IncrementalHoareTripleChecker+Valid, 1640 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-20 00:51:51,694 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1091 Valid, 4888 Invalid, 1986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [346 Valid, 1640 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-20 00:51:51,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32572 states. [2023-12-20 00:51:56,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32572 to 21797. [2023-12-20 00:51:56,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21797 states, 16285 states have (on average 1.2648449493398832) internal successors, (20598), 16446 states have internal predecessors, (20598), 3428 states have call successors, (3428), 2083 states have call predecessors, (3428), 2083 states have return successors, (3428), 3267 states have call predecessors, (3428), 3428 states have call successors, (3428) [2023-12-20 00:51:56,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21797 states to 21797 states and 27454 transitions. [2023-12-20 00:51:56,312 INFO L78 Accepts]: Start accepts. Automaton has 21797 states and 27454 transitions. Word has length 196 [2023-12-20 00:51:56,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:51:56,313 INFO L495 AbstractCegarLoop]: Abstraction has 21797 states and 27454 transitions. [2023-12-20 00:51:56,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 11.1875) internal successors, (179), 13 states have internal predecessors, (179), 4 states have call successors, (40), 4 states have call predecessors, (40), 9 states have return successors, (41), 7 states have call predecessors, (41), 4 states have call successors, (41) [2023-12-20 00:51:56,313 INFO L276 IsEmpty]: Start isEmpty. Operand 21797 states and 27454 transitions. [2023-12-20 00:51:56,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2023-12-20 00:51:56,317 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:51:56,317 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:51:56,327 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-12-20 00:51:56,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2023-12-20 00:51:56,523 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:51:56,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:51:56,523 INFO L85 PathProgramCache]: Analyzing trace with hash 1548404857, now seen corresponding path program 1 times [2023-12-20 00:51:56,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:51:56,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704042842] [2023-12-20 00:51:56,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:51:56,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:51:56,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:51:56,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-20 00:51:56,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:51:56,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-20 00:51:56,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:51:56,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-20 00:51:56,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:51:56,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-20 00:51:56,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:51:56,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-20 00:51:56,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:51:56,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-20 00:51:56,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:51:56,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-20 00:51:56,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:51:56,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-20 00:51:56,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:51:56,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-12-20 00:51:56,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:51:56,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-20 00:51:56,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:51:56,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-12-20 00:51:56,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:51:56,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-12-20 00:51:56,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:51:56,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-20 00:51:56,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:51:56,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-12-20 00:51:56,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:51:56,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-20 00:51:56,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:51:56,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-12-20 00:51:56,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:51:56,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2023-12-20 00:51:56,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:51:56,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2023-12-20 00:51:56,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:51:56,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2023-12-20 00:51:56,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:51:56,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2023-12-20 00:51:56,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:51:56,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2023-12-20 00:51:56,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:51:56,939 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 4 proven. 25 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2023-12-20 00:51:56,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:51:56,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704042842] [2023-12-20 00:51:56,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704042842] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 00:51:56,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [17704826] [2023-12-20 00:51:56,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:51:56,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 00:51:56,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 00:51:56,940 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 00:51:56,943 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-20 00:51:57,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:51:57,117 INFO L262 TraceCheckSpWp]: Trace formula consists of 774 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-20 00:51:57,121 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 00:51:57,343 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 4 proven. 130 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-12-20 00:51:57,343 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 00:51:57,652 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 4 proven. 25 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2023-12-20 00:51:57,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [17704826] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 00:51:57,652 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 00:51:57,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12, 9] total 18 [2023-12-20 00:51:57,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005664728] [2023-12-20 00:51:57,653 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 00:51:57,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-20 00:51:57,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:51:57,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-20 00:51:57,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2023-12-20 00:51:57,656 INFO L87 Difference]: Start difference. First operand 21797 states and 27454 transitions. Second operand has 18 states, 17 states have (on average 11.529411764705882) internal successors, (196), 18 states have internal predecessors, (196), 8 states have call successors, (44), 6 states have call predecessors, (44), 6 states have return successors, (43), 6 states have call predecessors, (43), 7 states have call successors, (43) [2023-12-20 00:52:02,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:52:02,949 INFO L93 Difference]: Finished difference Result 43333 states and 54976 transitions. [2023-12-20 00:52:02,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-20 00:52:02,949 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 11.529411764705882) internal successors, (196), 18 states have internal predecessors, (196), 8 states have call successors, (44), 6 states have call predecessors, (44), 6 states have return successors, (43), 6 states have call predecessors, (43), 7 states have call successors, (43) Word has length 199 [2023-12-20 00:52:02,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:52:03,005 INFO L225 Difference]: With dead ends: 43333 [2023-12-20 00:52:03,006 INFO L226 Difference]: Without dead ends: 23835 [2023-12-20 00:52:03,031 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 466 GetRequests, 437 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=206, Invalid=724, Unknown=0, NotChecked=0, Total=930 [2023-12-20 00:52:03,032 INFO L413 NwaCegarLoop]: 290 mSDtfsCounter, 979 mSDsluCounter, 2051 mSDsCounter, 0 mSdLazyCounter, 1096 mSolverCounterSat, 249 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 979 SdHoareTripleChecker+Valid, 2341 SdHoareTripleChecker+Invalid, 1345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 249 IncrementalHoareTripleChecker+Valid, 1096 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-20 00:52:03,032 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [979 Valid, 2341 Invalid, 1345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [249 Valid, 1096 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-20 00:52:03,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23835 states. [2023-12-20 00:52:07,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23835 to 23198. [2023-12-20 00:52:07,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23198 states, 17269 states have (on average 1.265620475997452) internal successors, (21856), 17444 states have internal predecessors, (21856), 3695 states have call successors, (3695), 2233 states have call predecessors, (3695), 2233 states have return successors, (3695), 3520 states have call predecessors, (3695), 3695 states have call successors, (3695) [2023-12-20 00:52:07,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23198 states to 23198 states and 29246 transitions. [2023-12-20 00:52:07,992 INFO L78 Accepts]: Start accepts. Automaton has 23198 states and 29246 transitions. Word has length 199 [2023-12-20 00:52:07,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:52:07,992 INFO L495 AbstractCegarLoop]: Abstraction has 23198 states and 29246 transitions. [2023-12-20 00:52:07,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 11.529411764705882) internal successors, (196), 18 states have internal predecessors, (196), 8 states have call successors, (44), 6 states have call predecessors, (44), 6 states have return successors, (43), 6 states have call predecessors, (43), 7 states have call successors, (43) [2023-12-20 00:52:07,992 INFO L276 IsEmpty]: Start isEmpty. Operand 23198 states and 29246 transitions. [2023-12-20 00:52:07,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2023-12-20 00:52:07,996 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:52:07,997 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:52:08,003 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-12-20 00:52:08,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2023-12-20 00:52:08,203 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:52:08,203 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:52:08,204 INFO L85 PathProgramCache]: Analyzing trace with hash 105326699, now seen corresponding path program 1 times [2023-12-20 00:52:08,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:52:08,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392240034] [2023-12-20 00:52:08,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:52:08,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:52:08,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:52:08,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-20 00:52:08,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:52:08,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-20 00:52:08,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:52:08,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-20 00:52:08,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:52:08,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-20 00:52:08,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:52:08,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-20 00:52:08,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:52:08,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-20 00:52:08,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:52:08,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-20 00:52:08,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:52:08,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-20 00:52:08,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:52:08,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-12-20 00:52:08,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:52:08,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-20 00:52:08,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:52:08,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-12-20 00:52:08,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:52:08,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-12-20 00:52:08,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:52:08,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-20 00:52:08,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:52:08,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2023-12-20 00:52:08,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:52:08,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-20 00:52:08,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:52:08,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-12-20 00:52:08,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:52:08,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2023-12-20 00:52:08,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:52:08,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2023-12-20 00:52:08,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:52:08,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2023-12-20 00:52:08,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:52:08,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2023-12-20 00:52:08,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:52:08,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2023-12-20 00:52:08,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:52:08,387 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2023-12-20 00:52:08,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:52:08,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392240034] [2023-12-20 00:52:08,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392240034] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:52:08,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:52:08,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-20 00:52:08,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083400040] [2023-12-20 00:52:08,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:52:08,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-20 00:52:08,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:52:08,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-20 00:52:08,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-12-20 00:52:08,389 INFO L87 Difference]: Start difference. First operand 23198 states and 29246 transitions. Second operand has 8 states, 8 states have (on average 13.625) internal successors, (109), 7 states have internal predecessors, (109), 4 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 4 states have call predecessors, (21), 3 states have call successors, (21) [2023-12-20 00:52:13,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:52:13,489 INFO L93 Difference]: Finished difference Result 43393 states and 55221 transitions. [2023-12-20 00:52:13,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-20 00:52:13,490 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 7 states have internal predecessors, (109), 4 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 4 states have call predecessors, (21), 3 states have call successors, (21) Word has length 199 [2023-12-20 00:52:13,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:52:13,551 INFO L225 Difference]: With dead ends: 43393 [2023-12-20 00:52:13,551 INFO L226 Difference]: Without dead ends: 24042 [2023-12-20 00:52:13,577 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2023-12-20 00:52:13,577 INFO L413 NwaCegarLoop]: 356 mSDtfsCounter, 429 mSDsluCounter, 1359 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 435 SdHoareTripleChecker+Valid, 1715 SdHoareTripleChecker+Invalid, 374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-20 00:52:13,577 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [435 Valid, 1715 Invalid, 374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-20 00:52:13,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24042 states. [2023-12-20 00:52:18,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24042 to 22867. [2023-12-20 00:52:18,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22867 states, 17028 states have (on average 1.264035705896171) internal successors, (21524), 17198 states have internal predecessors, (21524), 3642 states have call successors, (3642), 2196 states have call predecessors, (3642), 2196 states have return successors, (3642), 3472 states have call predecessors, (3642), 3642 states have call successors, (3642) [2023-12-20 00:52:18,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22867 states to 22867 states and 28808 transitions. [2023-12-20 00:52:18,321 INFO L78 Accepts]: Start accepts. Automaton has 22867 states and 28808 transitions. Word has length 199 [2023-12-20 00:52:18,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:52:18,322 INFO L495 AbstractCegarLoop]: Abstraction has 22867 states and 28808 transitions. [2023-12-20 00:52:18,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 7 states have internal predecessors, (109), 4 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 4 states have call predecessors, (21), 3 states have call successors, (21) [2023-12-20 00:52:18,322 INFO L276 IsEmpty]: Start isEmpty. Operand 22867 states and 28808 transitions. [2023-12-20 00:52:18,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2023-12-20 00:52:18,327 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:52:18,327 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:52:18,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2023-12-20 00:52:18,328 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:52:18,328 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:52:18,328 INFO L85 PathProgramCache]: Analyzing trace with hash -1587671650, now seen corresponding path program 1 times [2023-12-20 00:52:18,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:52:18,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201295235] [2023-12-20 00:52:18,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:52:18,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:52:18,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:52:18,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-20 00:52:18,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:52:18,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-20 00:52:18,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:52:18,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-20 00:52:18,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:52:18,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-12-20 00:52:18,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:52:18,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-20 00:52:18,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:52:18,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-20 00:52:18,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:52:18,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-20 00:52:18,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:52:18,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-20 00:52:18,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:52:18,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-20 00:52:18,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:52:18,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-20 00:52:18,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:52:18,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-20 00:52:18,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:52:18,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-20 00:52:18,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:52:18,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-12-20 00:52:18,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:52:18,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2023-12-20 00:52:18,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:52:18,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2023-12-20 00:52:18,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:52:18,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-20 00:52:18,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:52:18,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2023-12-20 00:52:18,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:52:18,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2023-12-20 00:52:18,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:52:18,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2023-12-20 00:52:18,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:52:18,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2023-12-20 00:52:18,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:52:18,630 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 31 proven. 7 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2023-12-20 00:52:18,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:52:18,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201295235] [2023-12-20 00:52:18,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201295235] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 00:52:18,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1754493214] [2023-12-20 00:52:18,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:52:18,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 00:52:18,631 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 00:52:18,632 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 00:52:18,665 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-20 00:52:18,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:52:18,820 INFO L262 TraceCheckSpWp]: Trace formula consists of 807 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-20 00:52:18,823 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 00:52:19,186 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 121 proven. 7 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-12-20 00:52:19,186 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 00:52:19,471 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 35 proven. 3 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2023-12-20 00:52:19,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1754493214] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 00:52:19,471 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 00:52:19,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 8] total 22 [2023-12-20 00:52:19,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114508191] [2023-12-20 00:52:19,472 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 00:52:19,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-20 00:52:19,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:52:19,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-20 00:52:19,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=379, Unknown=0, NotChecked=0, Total=462 [2023-12-20 00:52:19,474 INFO L87 Difference]: Start difference. First operand 22867 states and 28808 transitions. Second operand has 22 states, 22 states have (on average 13.045454545454545) internal successors, (287), 22 states have internal predecessors, (287), 9 states have call successors, (54), 5 states have call predecessors, (54), 5 states have return successors, (53), 9 states have call predecessors, (53), 9 states have call successors, (53) [2023-12-20 00:52:27,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:52:27,472 INFO L93 Difference]: Finished difference Result 45221 states and 57357 transitions. [2023-12-20 00:52:27,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2023-12-20 00:52:27,472 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 13.045454545454545) internal successors, (287), 22 states have internal predecessors, (287), 9 states have call successors, (54), 5 states have call predecessors, (54), 5 states have return successors, (53), 9 states have call predecessors, (53), 9 states have call successors, (53) Word has length 205 [2023-12-20 00:52:27,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:52:27,548 INFO L225 Difference]: With dead ends: 45221 [2023-12-20 00:52:27,548 INFO L226 Difference]: Without dead ends: 25355 [2023-12-20 00:52:27,575 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 535 GetRequests, 453 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2130 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=972, Invalid=6000, Unknown=0, NotChecked=0, Total=6972 [2023-12-20 00:52:27,575 INFO L413 NwaCegarLoop]: 591 mSDtfsCounter, 1886 mSDsluCounter, 4663 mSDsCounter, 0 mSdLazyCounter, 3376 mSolverCounterSat, 562 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1886 SdHoareTripleChecker+Valid, 5254 SdHoareTripleChecker+Invalid, 3938 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 562 IncrementalHoareTripleChecker+Valid, 3376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-20 00:52:27,575 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1886 Valid, 5254 Invalid, 3938 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [562 Valid, 3376 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-20 00:52:27,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25355 states. [2023-12-20 00:52:32,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25355 to 24567. [2023-12-20 00:52:32,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24567 states, 18285 states have (on average 1.2679245283018867) internal successors, (23184), 18468 states have internal predecessors, (23184), 3932 states have call successors, (3932), 2349 states have call predecessors, (3932), 2349 states have return successors, (3932), 3749 states have call predecessors, (3932), 3932 states have call successors, (3932) [2023-12-20 00:52:32,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24567 states to 24567 states and 31048 transitions. [2023-12-20 00:52:32,907 INFO L78 Accepts]: Start accepts. Automaton has 24567 states and 31048 transitions. Word has length 205 [2023-12-20 00:52:32,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:52:32,908 INFO L495 AbstractCegarLoop]: Abstraction has 24567 states and 31048 transitions. [2023-12-20 00:52:32,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 13.045454545454545) internal successors, (287), 22 states have internal predecessors, (287), 9 states have call successors, (54), 5 states have call predecessors, (54), 5 states have return successors, (53), 9 states have call predecessors, (53), 9 states have call successors, (53) [2023-12-20 00:52:32,908 INFO L276 IsEmpty]: Start isEmpty. Operand 24567 states and 31048 transitions. [2023-12-20 00:52:32,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2023-12-20 00:52:32,912 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:52:32,912 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:52:32,923 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-12-20 00:52:33,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2023-12-20 00:52:33,119 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:52:33,119 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:52:33,119 INFO L85 PathProgramCache]: Analyzing trace with hash -1676142549, now seen corresponding path program 1 times [2023-12-20 00:52:33,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:52:33,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455095124] [2023-12-20 00:52:33,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:52:33,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:52:33,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:52:33,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-20 00:52:33,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:52:33,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-20 00:52:33,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:52:33,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-20 00:52:33,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:52:33,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-12-20 00:52:33,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:52:33,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-20 00:52:33,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:52:33,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-20 00:52:33,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:52:33,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-20 00:52:33,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:52:33,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-20 00:52:33,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:52:33,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-20 00:52:33,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:52:33,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-20 00:52:33,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:52:33,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-20 00:52:33,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:52:33,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-20 00:52:33,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:52:33,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-12-20 00:52:33,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:52:33,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2023-12-20 00:52:33,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:52:33,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2023-12-20 00:52:33,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:52:33,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2023-12-20 00:52:33,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:52:33,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2023-12-20 00:52:33,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:52:33,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2023-12-20 00:52:33,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:52:33,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2023-12-20 00:52:33,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:52:33,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2023-12-20 00:52:33,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:52:33,444 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 4 proven. 34 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2023-12-20 00:52:33,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:52:33,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455095124] [2023-12-20 00:52:33,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455095124] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 00:52:33,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1514369707] [2023-12-20 00:52:33,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:52:33,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 00:52:33,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 00:52:33,445 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 00:52:33,466 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-12-20 00:52:33,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:52:33,613 INFO L262 TraceCheckSpWp]: Trace formula consists of 806 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-20 00:52:33,616 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 00:52:33,885 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 4 proven. 124 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-12-20 00:52:33,885 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 00:52:34,124 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 4 proven. 34 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2023-12-20 00:52:34,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1514369707] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 00:52:34,125 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 00:52:34,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 9] total 22 [2023-12-20 00:52:34,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28245029] [2023-12-20 00:52:34,125 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 00:52:34,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-20 00:52:34,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:52:34,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-20 00:52:34,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=381, Unknown=0, NotChecked=0, Total=462 [2023-12-20 00:52:34,126 INFO L87 Difference]: Start difference. First operand 24567 states and 31048 transitions. Second operand has 22 states, 22 states have (on average 12.227272727272727) internal successors, (269), 22 states have internal predecessors, (269), 10 states have call successors, (55), 6 states have call predecessors, (55), 5 states have return successors, (54), 9 states have call predecessors, (54), 9 states have call successors, (54) [2023-12-20 00:52:42,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:52:42,258 INFO L93 Difference]: Finished difference Result 55270 states and 70257 transitions. [2023-12-20 00:52:42,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-20 00:52:42,259 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 12.227272727272727) internal successors, (269), 22 states have internal predecessors, (269), 10 states have call successors, (55), 6 states have call predecessors, (55), 5 states have return successors, (54), 9 states have call predecessors, (54), 9 states have call successors, (54) Word has length 206 [2023-12-20 00:52:42,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:52:42,341 INFO L225 Difference]: With dead ends: 55270 [2023-12-20 00:52:42,341 INFO L226 Difference]: Without dead ends: 33659 [2023-12-20 00:52:42,368 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 476 GetRequests, 443 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=240, Invalid=950, Unknown=0, NotChecked=0, Total=1190 [2023-12-20 00:52:42,369 INFO L413 NwaCegarLoop]: 352 mSDtfsCounter, 1439 mSDsluCounter, 2919 mSDsCounter, 0 mSdLazyCounter, 1475 mSolverCounterSat, 424 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1439 SdHoareTripleChecker+Valid, 3271 SdHoareTripleChecker+Invalid, 1899 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 424 IncrementalHoareTripleChecker+Valid, 1475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-20 00:52:42,369 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1439 Valid, 3271 Invalid, 1899 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [424 Valid, 1475 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-20 00:52:42,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33659 states. [2023-12-20 00:52:49,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33659 to 32587. [2023-12-20 00:52:49,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32587 states, 24282 states have (on average 1.2709002553331685) internal successors, (30860), 24530 states have internal predecessors, (30860), 5203 states have call successors, (5203), 3101 states have call predecessors, (5203), 3101 states have return successors, (5203), 4955 states have call predecessors, (5203), 5203 states have call successors, (5203) [2023-12-20 00:52:49,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32587 states to 32587 states and 41266 transitions. [2023-12-20 00:52:49,969 INFO L78 Accepts]: Start accepts. Automaton has 32587 states and 41266 transitions. Word has length 206 [2023-12-20 00:52:49,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:52:49,969 INFO L495 AbstractCegarLoop]: Abstraction has 32587 states and 41266 transitions. [2023-12-20 00:52:49,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 12.227272727272727) internal successors, (269), 22 states have internal predecessors, (269), 10 states have call successors, (55), 6 states have call predecessors, (55), 5 states have return successors, (54), 9 states have call predecessors, (54), 9 states have call successors, (54) [2023-12-20 00:52:49,970 INFO L276 IsEmpty]: Start isEmpty. Operand 32587 states and 41266 transitions. [2023-12-20 00:52:49,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2023-12-20 00:52:49,990 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:52:49,990 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:52:49,998 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-12-20 00:52:50,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 00:52:50,196 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:52:50,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:52:50,197 INFO L85 PathProgramCache]: Analyzing trace with hash -183340016, now seen corresponding path program 1 times [2023-12-20 00:52:50,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:52:50,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885795849] [2023-12-20 00:52:50,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:52:50,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:52:50,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:52:50,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-20 00:52:50,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:52:50,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-20 00:52:50,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:52:50,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-20 00:52:50,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:52:50,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-12-20 00:52:50,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:52:50,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-20 00:52:50,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:52:50,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-20 00:52:50,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:52:50,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-20 00:52:50,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:52:50,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-20 00:52:50,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:52:50,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-20 00:52:50,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:52:50,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-20 00:52:50,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:52:50,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-20 00:52:50,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:52:50,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-20 00:52:50,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:52:50,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-12-20 00:52:50,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:52:50,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-12-20 00:52:50,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:52:50,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2023-12-20 00:52:50,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:52:50,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2023-12-20 00:52:50,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:52:50,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2023-12-20 00:52:50,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:52:50,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2023-12-20 00:52:50,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:52:50,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2023-12-20 00:52:50,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:52:50,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2023-12-20 00:52:50,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:52:50,703 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 22 proven. 18 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2023-12-20 00:52:50,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:52:50,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885795849] [2023-12-20 00:52:50,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885795849] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 00:52:50,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1619031202] [2023-12-20 00:52:50,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:52:50,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 00:52:50,704 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 00:52:50,721 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 00:52:50,721 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-12-20 00:52:50,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:52:50,895 INFO L262 TraceCheckSpWp]: Trace formula consists of 819 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-20 00:52:50,898 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 00:52:51,152 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 113 proven. 15 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-12-20 00:52:51,152 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 00:52:51,357 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 31 proven. 7 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2023-12-20 00:52:51,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1619031202] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 00:52:51,357 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 00:52:51,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 8] total 28 [2023-12-20 00:52:51,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734823270] [2023-12-20 00:52:51,358 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 00:52:51,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-20 00:52:51,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:52:51,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-20 00:52:51,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=675, Unknown=0, NotChecked=0, Total=756 [2023-12-20 00:52:51,369 INFO L87 Difference]: Start difference. First operand 32587 states and 41266 transitions. Second operand has 28 states, 28 states have (on average 11.642857142857142) internal successors, (326), 27 states have internal predecessors, (326), 11 states have call successors, (57), 5 states have call predecessors, (57), 6 states have return successors, (56), 12 states have call predecessors, (56), 11 states have call successors, (56) [2023-12-20 00:53:01,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:53:01,641 INFO L93 Difference]: Finished difference Result 68466 states and 86867 transitions. [2023-12-20 00:53:01,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-12-20 00:53:01,641 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 11.642857142857142) internal successors, (326), 27 states have internal predecessors, (326), 11 states have call successors, (57), 5 states have call predecessors, (57), 6 states have return successors, (56), 12 states have call predecessors, (56), 11 states have call successors, (56) Word has length 208 [2023-12-20 00:53:01,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:53:01,762 INFO L225 Difference]: With dead ends: 68466 [2023-12-20 00:53:01,762 INFO L226 Difference]: Without dead ends: 39016 [2023-12-20 00:53:01,806 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 520 GetRequests, 448 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1339 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=878, Invalid=4524, Unknown=0, NotChecked=0, Total=5402 [2023-12-20 00:53:01,807 INFO L413 NwaCegarLoop]: 488 mSDtfsCounter, 2460 mSDsluCounter, 5328 mSDsCounter, 0 mSdLazyCounter, 1931 mSolverCounterSat, 744 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2460 SdHoareTripleChecker+Valid, 5816 SdHoareTripleChecker+Invalid, 2675 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 744 IncrementalHoareTripleChecker+Valid, 1931 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-20 00:53:01,807 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2460 Valid, 5816 Invalid, 2675 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [744 Valid, 1931 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-20 00:53:01,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39016 states. [2023-12-20 00:53:10,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39016 to 35268. [2023-12-20 00:53:10,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35268 states, 26279 states have (on average 1.27063434681685) internal successors, (33391), 26545 states have internal predecessors, (33391), 5619 states have call successors, (5619), 3369 states have call predecessors, (5619), 3369 states have return successors, (5619), 5353 states have call predecessors, (5619), 5619 states have call successors, (5619) [2023-12-20 00:53:10,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35268 states to 35268 states and 44629 transitions. [2023-12-20 00:53:10,578 INFO L78 Accepts]: Start accepts. Automaton has 35268 states and 44629 transitions. Word has length 208 [2023-12-20 00:53:10,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:53:10,578 INFO L495 AbstractCegarLoop]: Abstraction has 35268 states and 44629 transitions. [2023-12-20 00:53:10,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 11.642857142857142) internal successors, (326), 27 states have internal predecessors, (326), 11 states have call successors, (57), 5 states have call predecessors, (57), 6 states have return successors, (56), 12 states have call predecessors, (56), 11 states have call successors, (56) [2023-12-20 00:53:10,578 INFO L276 IsEmpty]: Start isEmpty. Operand 35268 states and 44629 transitions. [2023-12-20 00:53:10,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2023-12-20 00:53:10,593 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:53:10,593 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 6, 6, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:53:10,610 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-12-20 00:53:10,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2023-12-20 00:53:10,799 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:53:10,799 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:53:10,800 INFO L85 PathProgramCache]: Analyzing trace with hash -1718927262, now seen corresponding path program 1 times [2023-12-20 00:53:10,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:53:10,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484505347] [2023-12-20 00:53:10,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:53:10,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:53:10,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:53:10,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-20 00:53:10,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:53:10,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-20 00:53:10,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:53:10,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-20 00:53:10,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:53:10,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-20 00:53:10,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:53:10,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-20 00:53:10,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:53:10,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-20 00:53:10,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:53:10,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-20 00:53:10,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:53:10,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-20 00:53:10,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:53:10,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-20 00:53:10,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:53:10,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-20 00:53:10,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:53:10,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-20 00:53:10,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:53:10,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-20 00:53:10,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:53:10,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-12-20 00:53:10,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:53:10,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2023-12-20 00:53:10,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:53:10,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2023-12-20 00:53:10,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:53:10,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2023-12-20 00:53:10,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:53:10,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2023-12-20 00:53:10,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:53:10,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2023-12-20 00:53:10,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:53:10,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2023-12-20 00:53:10,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:53:10,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2023-12-20 00:53:10,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:53:10,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2023-12-20 00:53:10,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:53:10,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2023-12-20 00:53:10,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:53:10,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2023-12-20 00:53:10,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:53:10,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-12-20 00:53:10,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:53:10,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2023-12-20 00:53:10,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:53:10,961 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2023-12-20 00:53:10,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:53:10,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484505347] [2023-12-20 00:53:10,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484505347] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 00:53:10,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 00:53:10,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 00:53:10,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571290287] [2023-12-20 00:53:10,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 00:53:10,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 00:53:10,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:53:10,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 00:53:10,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 00:53:10,963 INFO L87 Difference]: Start difference. First operand 35268 states and 44629 transitions. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-20 00:53:18,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:53:18,866 INFO L93 Difference]: Finished difference Result 68498 states and 87085 transitions. [2023-12-20 00:53:18,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 00:53:18,866 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 247 [2023-12-20 00:53:18,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:53:18,958 INFO L225 Difference]: With dead ends: 68498 [2023-12-20 00:53:18,958 INFO L226 Difference]: Without dead ends: 34762 [2023-12-20 00:53:18,998 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 00:53:18,999 INFO L413 NwaCegarLoop]: 231 mSDtfsCounter, 7 mSDsluCounter, 454 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 685 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 00:53:18,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 685 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 00:53:19,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34762 states. [2023-12-20 00:53:27,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34762 to 34762. [2023-12-20 00:53:27,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34762 states, 26026 states have (on average 1.2476369784062091) internal successors, (32471), 26292 states have internal predecessors, (32471), 5366 states have call successors, (5366), 3369 states have call predecessors, (5366), 3369 states have return successors, (5366), 5100 states have call predecessors, (5366), 5366 states have call successors, (5366) [2023-12-20 00:53:27,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34762 states to 34762 states and 43203 transitions. [2023-12-20 00:53:27,272 INFO L78 Accepts]: Start accepts. Automaton has 34762 states and 43203 transitions. Word has length 247 [2023-12-20 00:53:27,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:53:27,272 INFO L495 AbstractCegarLoop]: Abstraction has 34762 states and 43203 transitions. [2023-12-20 00:53:27,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-12-20 00:53:27,272 INFO L276 IsEmpty]: Start isEmpty. Operand 34762 states and 43203 transitions. [2023-12-20 00:53:27,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2023-12-20 00:53:27,291 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:53:27,291 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:53:27,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2023-12-20 00:53:27,292 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:53:27,292 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:53:27,292 INFO L85 PathProgramCache]: Analyzing trace with hash 2034320583, now seen corresponding path program 1 times [2023-12-20 00:53:27,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:53:27,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800728461] [2023-12-20 00:53:27,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:53:27,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:53:27,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:53:27,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-20 00:53:27,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:53:27,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-20 00:53:27,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:53:27,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-20 00:53:27,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:53:27,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-20 00:53:27,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:53:27,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-20 00:53:27,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:53:27,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-20 00:53:27,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:53:27,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-20 00:53:27,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:53:27,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-20 00:53:27,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:53:27,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-20 00:53:27,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:53:27,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-20 00:53:27,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:53:27,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-20 00:53:27,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:53:27,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-12-20 00:53:27,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:53:27,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-12-20 00:53:27,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:53:27,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-20 00:53:27,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:53:27,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2023-12-20 00:53:27,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:53:27,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2023-12-20 00:53:27,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:53:27,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2023-12-20 00:53:27,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:53:27,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2023-12-20 00:53:27,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:53:27,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2023-12-20 00:53:27,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:53:27,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2023-12-20 00:53:27,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:53:27,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2023-12-20 00:53:27,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:53:27,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2023-12-20 00:53:27,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:53:27,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-12-20 00:53:27,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:53:27,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2023-12-20 00:53:27,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:53:27,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2023-12-20 00:53:27,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:53:27,579 INFO L134 CoverageAnalysis]: Checked inductivity of 305 backedges. 65 proven. 23 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2023-12-20 00:53:27,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:53:27,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800728461] [2023-12-20 00:53:27,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800728461] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 00:53:27,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [58000948] [2023-12-20 00:53:27,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:53:27,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 00:53:27,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 00:53:27,581 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 00:53:27,583 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-12-20 00:53:27,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:53:27,782 INFO L262 TraceCheckSpWp]: Trace formula consists of 973 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-20 00:53:27,786 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 00:53:27,937 INFO L134 CoverageAnalysis]: Checked inductivity of 305 backedges. 191 proven. 62 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-12-20 00:53:27,937 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 00:53:28,113 INFO L134 CoverageAnalysis]: Checked inductivity of 305 backedges. 65 proven. 23 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2023-12-20 00:53:28,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [58000948] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 00:53:28,113 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 00:53:28,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 12 [2023-12-20 00:53:28,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329075506] [2023-12-20 00:53:28,113 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 00:53:28,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-20 00:53:28,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:53:28,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-20 00:53:28,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-12-20 00:53:28,129 INFO L87 Difference]: Start difference. First operand 34762 states and 43203 transitions. Second operand has 12 states, 12 states have (on average 18.0) internal successors, (216), 11 states have internal predecessors, (216), 5 states have call successors, (50), 4 states have call predecessors, (50), 7 states have return successors, (51), 6 states have call predecessors, (51), 5 states have call successors, (51) [2023-12-20 00:53:36,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:53:36,844 INFO L93 Difference]: Finished difference Result 67826 states and 84233 transitions. [2023-12-20 00:53:36,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-20 00:53:36,845 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 18.0) internal successors, (216), 11 states have internal predecessors, (216), 5 states have call successors, (50), 4 states have call predecessors, (50), 7 states have return successors, (51), 6 states have call predecessors, (51), 5 states have call successors, (51) Word has length 249 [2023-12-20 00:53:36,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:53:36,931 INFO L225 Difference]: With dead ends: 67826 [2023-12-20 00:53:36,932 INFO L226 Difference]: Without dead ends: 36287 [2023-12-20 00:53:36,963 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 577 GetRequests, 546 SyntacticMatches, 6 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=172, Invalid=530, Unknown=0, NotChecked=0, Total=702 [2023-12-20 00:53:36,964 INFO L413 NwaCegarLoop]: 352 mSDtfsCounter, 946 mSDsluCounter, 1773 mSDsCounter, 0 mSdLazyCounter, 415 mSolverCounterSat, 224 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 953 SdHoareTripleChecker+Valid, 2125 SdHoareTripleChecker+Invalid, 639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 224 IncrementalHoareTripleChecker+Valid, 415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-20 00:53:36,964 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [953 Valid, 2125 Invalid, 639 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [224 Valid, 415 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-20 00:53:36,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36287 states. [2023-12-20 00:53:44,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36287 to 34762. [2023-12-20 00:53:44,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34762 states, 26026 states have (on average 1.2441788980250519) internal successors, (32381), 26292 states have internal predecessors, (32381), 5366 states have call successors, (5366), 3369 states have call predecessors, (5366), 3369 states have return successors, (5366), 5100 states have call predecessors, (5366), 5366 states have call successors, (5366) [2023-12-20 00:53:45,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34762 states to 34762 states and 43113 transitions. [2023-12-20 00:53:45,038 INFO L78 Accepts]: Start accepts. Automaton has 34762 states and 43113 transitions. Word has length 249 [2023-12-20 00:53:45,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:53:45,039 INFO L495 AbstractCegarLoop]: Abstraction has 34762 states and 43113 transitions. [2023-12-20 00:53:45,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 18.0) internal successors, (216), 11 states have internal predecessors, (216), 5 states have call successors, (50), 4 states have call predecessors, (50), 7 states have return successors, (51), 6 states have call predecessors, (51), 5 states have call successors, (51) [2023-12-20 00:53:45,039 INFO L276 IsEmpty]: Start isEmpty. Operand 34762 states and 43113 transitions. [2023-12-20 00:53:45,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2023-12-20 00:53:45,054 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:53:45,055 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:53:45,063 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2023-12-20 00:53:45,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 00:53:45,260 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:53:45,260 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:53:45,261 INFO L85 PathProgramCache]: Analyzing trace with hash 912233656, now seen corresponding path program 1 times [2023-12-20 00:53:45,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:53:45,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78791631] [2023-12-20 00:53:45,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:53:45,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:53:45,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:53:45,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-20 00:53:45,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:53:45,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-20 00:53:45,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:53:45,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-20 00:53:45,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:53:45,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-12-20 00:53:45,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:53:45,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-20 00:53:45,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:53:45,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-20 00:53:45,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:53:45,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-20 00:53:45,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:53:45,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-20 00:53:45,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:53:45,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-20 00:53:45,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:53:45,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-20 00:53:45,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:53:45,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-20 00:53:45,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:53:45,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-20 00:53:45,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:53:45,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-12-20 00:53:45,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:53:45,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2023-12-20 00:53:45,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:53:45,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2023-12-20 00:53:45,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:53:45,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2023-12-20 00:53:45,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:53:45,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2023-12-20 00:53:45,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:53:45,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2023-12-20 00:53:45,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:53:45,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2023-12-20 00:53:45,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:53:45,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2023-12-20 00:53:45,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:53:45,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2023-12-20 00:53:45,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:53:45,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2023-12-20 00:53:45,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:53:45,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2023-12-20 00:53:45,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:53:45,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2023-12-20 00:53:45,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:53:45,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2023-12-20 00:53:45,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:53:45,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2023-12-20 00:53:45,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:53:45,530 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 42 proven. 4 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2023-12-20 00:53:45,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:53:45,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78791631] [2023-12-20 00:53:45,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78791631] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 00:53:45,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [517124582] [2023-12-20 00:53:45,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:53:45,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 00:53:45,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 00:53:45,531 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 00:53:45,536 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-12-20 00:53:45,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:53:45,737 INFO L262 TraceCheckSpWp]: Trace formula consists of 1001 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-20 00:53:45,740 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 00:53:45,936 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 168 proven. 76 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2023-12-20 00:53:45,936 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 00:53:46,106 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 63 proven. 23 refuted. 0 times theorem prover too weak. 221 trivial. 0 not checked. [2023-12-20 00:53:46,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [517124582] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 00:53:46,106 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 00:53:46,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 15 [2023-12-20 00:53:46,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221709837] [2023-12-20 00:53:46,106 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 00:53:46,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-20 00:53:46,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:53:46,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-20 00:53:46,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2023-12-20 00:53:46,108 INFO L87 Difference]: Start difference. First operand 34762 states and 43113 transitions. Second operand has 15 states, 15 states have (on average 16.333333333333332) internal successors, (245), 13 states have internal predecessors, (245), 5 states have call successors, (60), 4 states have call predecessors, (60), 7 states have return successors, (60), 7 states have call predecessors, (60), 5 states have call successors, (60) [2023-12-20 00:53:53,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:53:53,707 INFO L93 Difference]: Finished difference Result 61312 states and 75960 transitions. [2023-12-20 00:53:53,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-12-20 00:53:53,708 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 16.333333333333332) internal successors, (245), 13 states have internal predecessors, (245), 5 states have call successors, (60), 4 states have call predecessors, (60), 7 states have return successors, (60), 7 states have call predecessors, (60), 5 states have call successors, (60) Word has length 252 [2023-12-20 00:53:53,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:53:53,764 INFO L225 Difference]: With dead ends: 61312 [2023-12-20 00:53:53,765 INFO L226 Difference]: Without dead ends: 27609 [2023-12-20 00:53:53,792 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 614 GetRequests, 558 SyntacticMatches, 4 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 656 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=589, Invalid=2273, Unknown=0, NotChecked=0, Total=2862 [2023-12-20 00:53:53,793 INFO L413 NwaCegarLoop]: 577 mSDtfsCounter, 1696 mSDsluCounter, 3947 mSDsCounter, 0 mSdLazyCounter, 1072 mSolverCounterSat, 649 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1696 SdHoareTripleChecker+Valid, 4524 SdHoareTripleChecker+Invalid, 1721 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 649 IncrementalHoareTripleChecker+Valid, 1072 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-20 00:53:53,793 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1696 Valid, 4524 Invalid, 1721 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [649 Valid, 1072 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-20 00:53:53,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27609 states. [2023-12-20 00:53:59,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27609 to 25938. [2023-12-20 00:53:59,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25938 states, 19429 states have (on average 1.2309434350712851) internal successors, (23916), 19621 states have internal predecessors, (23916), 3998 states have call successors, (3998), 2510 states have call predecessors, (3998), 2510 states have return successors, (3998), 3806 states have call predecessors, (3998), 3998 states have call successors, (3998) [2023-12-20 00:53:59,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25938 states to 25938 states and 31912 transitions. [2023-12-20 00:53:59,729 INFO L78 Accepts]: Start accepts. Automaton has 25938 states and 31912 transitions. Word has length 252 [2023-12-20 00:53:59,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:53:59,729 INFO L495 AbstractCegarLoop]: Abstraction has 25938 states and 31912 transitions. [2023-12-20 00:53:59,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 16.333333333333332) internal successors, (245), 13 states have internal predecessors, (245), 5 states have call successors, (60), 4 states have call predecessors, (60), 7 states have return successors, (60), 7 states have call predecessors, (60), 5 states have call successors, (60) [2023-12-20 00:53:59,729 INFO L276 IsEmpty]: Start isEmpty. Operand 25938 states and 31912 transitions. [2023-12-20 00:53:59,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2023-12-20 00:53:59,743 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:53:59,744 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-20 00:53:59,749 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-12-20 00:53:59,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 00:53:59,950 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:53:59,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:53:59,950 INFO L85 PathProgramCache]: Analyzing trace with hash -2063681580, now seen corresponding path program 1 times [2023-12-20 00:53:59,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:53:59,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009059136] [2023-12-20 00:53:59,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:53:59,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:54:00,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:54:01,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-20 00:54:01,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:54:01,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-20 00:54:01,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:54:01,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-20 00:54:01,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:54:01,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-20 00:54:01,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:54:01,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-20 00:54:01,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:54:01,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-20 00:54:01,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:54:01,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-20 00:54:01,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:54:01,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-20 00:54:01,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:54:01,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-12-20 00:54:01,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:54:01,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-20 00:54:01,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:54:01,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-12-20 00:54:01,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:54:01,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-12-20 00:54:01,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:54:01,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-20 00:54:01,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:54:01,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-12-20 00:54:01,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:54:01,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-20 00:54:01,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:54:01,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-12-20 00:54:01,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:54:01,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2023-12-20 00:54:01,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:54:01,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2023-12-20 00:54:01,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:54:01,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2023-12-20 00:54:01,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:54:01,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2023-12-20 00:54:01,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:54:01,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2023-12-20 00:54:01,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:54:01,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2023-12-20 00:54:01,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:54:01,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2023-12-20 00:54:01,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:54:01,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2023-12-20 00:54:01,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:54:01,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2023-12-20 00:54:01,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:54:01,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2023-12-20 00:54:01,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:54:01,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2023-12-20 00:54:01,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:54:01,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2023-12-20 00:54:01,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:54:01,151 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 58 proven. 34 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked. [2023-12-20 00:54:01,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:54:01,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009059136] [2023-12-20 00:54:01,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009059136] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 00:54:01,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1226143142] [2023-12-20 00:54:01,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:54:01,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 00:54:01,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 00:54:01,152 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 00:54:01,155 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-12-20 00:54:01,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:54:01,374 INFO L262 TraceCheckSpWp]: Trace formula consists of 1017 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-20 00:54:01,377 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 00:54:01,577 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 293 proven. 42 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2023-12-20 00:54:01,578 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 00:54:01,773 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 87 proven. 17 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2023-12-20 00:54:01,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1226143142] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 00:54:01,773 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 00:54:01,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10, 10] total 25 [2023-12-20 00:54:01,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421858016] [2023-12-20 00:54:01,773 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 00:54:01,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-12-20 00:54:01,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:54:01,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-12-20 00:54:01,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2023-12-20 00:54:01,775 INFO L87 Difference]: Start difference. First operand 25938 states and 31912 transitions. Second operand has 25 states, 25 states have (on average 10.92) internal successors, (273), 22 states have internal predecessors, (273), 9 states have call successors, (69), 4 states have call predecessors, (69), 8 states have return successors, (70), 12 states have call predecessors, (70), 9 states have call successors, (70) [2023-12-20 00:54:17,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:54:17,253 INFO L93 Difference]: Finished difference Result 65011 states and 80631 transitions. [2023-12-20 00:54:17,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2023-12-20 00:54:17,254 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 10.92) internal successors, (273), 22 states have internal predecessors, (273), 9 states have call successors, (69), 4 states have call predecessors, (69), 8 states have return successors, (70), 12 states have call predecessors, (70), 9 states have call successors, (70) Word has length 263 [2023-12-20 00:54:17,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:54:17,355 INFO L225 Difference]: With dead ends: 65011 [2023-12-20 00:54:17,355 INFO L226 Difference]: Without dead ends: 40333 [2023-12-20 00:54:17,392 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 734 GetRequests, 601 SyntacticMatches, 1 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5962 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1455, Invalid=16367, Unknown=0, NotChecked=0, Total=17822 [2023-12-20 00:54:17,393 INFO L413 NwaCegarLoop]: 843 mSDtfsCounter, 1951 mSDsluCounter, 13346 mSDsCounter, 0 mSdLazyCounter, 7031 mSolverCounterSat, 625 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1964 SdHoareTripleChecker+Valid, 14189 SdHoareTripleChecker+Invalid, 7656 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 625 IncrementalHoareTripleChecker+Valid, 7031 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-12-20 00:54:17,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1964 Valid, 14189 Invalid, 7656 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [625 Valid, 7031 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-12-20 00:54:17,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40333 states. [2023-12-20 00:54:25,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40333 to 34395. [2023-12-20 00:54:26,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34395 states, 25660 states have (on average 1.2293452844894779) internal successors, (31545), 25918 states have internal predecessors, (31545), 5394 states have call successors, (5394), 3340 states have call predecessors, (5394), 3340 states have return successors, (5394), 5136 states have call predecessors, (5394), 5394 states have call successors, (5394) [2023-12-20 00:54:26,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34395 states to 34395 states and 42333 transitions. [2023-12-20 00:54:26,091 INFO L78 Accepts]: Start accepts. Automaton has 34395 states and 42333 transitions. Word has length 263 [2023-12-20 00:54:26,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:54:26,092 INFO L495 AbstractCegarLoop]: Abstraction has 34395 states and 42333 transitions. [2023-12-20 00:54:26,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 10.92) internal successors, (273), 22 states have internal predecessors, (273), 9 states have call successors, (69), 4 states have call predecessors, (69), 8 states have return successors, (70), 12 states have call predecessors, (70), 9 states have call successors, (70) [2023-12-20 00:54:26,092 INFO L276 IsEmpty]: Start isEmpty. Operand 34395 states and 42333 transitions. [2023-12-20 00:54:26,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2023-12-20 00:54:26,109 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:54:26,109 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:54:26,117 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-12-20 00:54:26,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 00:54:26,315 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:54:26,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:54:26,316 INFO L85 PathProgramCache]: Analyzing trace with hash 453834742, now seen corresponding path program 1 times [2023-12-20 00:54:26,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:54:26,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48934760] [2023-12-20 00:54:26,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:54:26,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:54:26,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:54:26,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-20 00:54:26,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:54:26,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-20 00:54:26,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:54:26,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-20 00:54:26,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:54:26,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-20 00:54:26,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:54:26,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-20 00:54:26,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:54:26,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-20 00:54:26,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:54:26,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-20 00:54:26,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:54:26,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-20 00:54:26,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:54:26,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-20 00:54:26,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:54:26,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-20 00:54:26,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:54:26,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-20 00:54:26,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:54:26,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-12-20 00:54:26,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:54:26,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-12-20 00:54:26,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:54:26,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-20 00:54:26,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:54:26,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2023-12-20 00:54:26,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:54:26,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2023-12-20 00:54:26,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:54:26,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2023-12-20 00:54:26,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:54:26,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2023-12-20 00:54:26,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:54:26,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2023-12-20 00:54:26,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:54:26,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2023-12-20 00:54:26,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:54:26,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2023-12-20 00:54:26,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:54:26,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2023-12-20 00:54:26,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:54:26,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2023-12-20 00:54:26,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:54:26,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2023-12-20 00:54:26,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:54:26,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2023-12-20 00:54:26,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:54:26,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2023-12-20 00:54:26,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:54:26,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2023-12-20 00:54:26,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:54:26,543 INFO L134 CoverageAnalysis]: Checked inductivity of 344 backedges. 88 proven. 2 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2023-12-20 00:54:26,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:54:26,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48934760] [2023-12-20 00:54:26,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48934760] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 00:54:26,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [932909488] [2023-12-20 00:54:26,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:54:26,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 00:54:26,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 00:54:26,547 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 00:54:26,548 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-12-20 00:54:26,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:54:26,733 INFO L262 TraceCheckSpWp]: Trace formula consists of 1009 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-20 00:54:26,736 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 00:54:26,867 INFO L134 CoverageAnalysis]: Checked inductivity of 344 backedges. 213 proven. 11 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2023-12-20 00:54:26,867 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 00:54:27,005 INFO L134 CoverageAnalysis]: Checked inductivity of 344 backedges. 73 proven. 2 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2023-12-20 00:54:27,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [932909488] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 00:54:27,005 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 00:54:27,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 10] total 19 [2023-12-20 00:54:27,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413370418] [2023-12-20 00:54:27,005 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 00:54:27,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-20 00:54:27,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:54:27,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-20 00:54:27,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2023-12-20 00:54:27,006 INFO L87 Difference]: Start difference. First operand 34395 states and 42333 transitions. Second operand has 19 states, 19 states have (on average 11.368421052631579) internal successors, (216), 15 states have internal predecessors, (216), 6 states have call successors, (48), 4 states have call predecessors, (48), 8 states have return successors, (48), 10 states have call predecessors, (48), 6 states have call successors, (48) [2023-12-20 00:54:36,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:54:36,015 INFO L93 Difference]: Finished difference Result 64588 states and 79112 transitions. [2023-12-20 00:54:36,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-20 00:54:36,016 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 11.368421052631579) internal successors, (216), 15 states have internal predecessors, (216), 6 states have call successors, (48), 4 states have call predecessors, (48), 8 states have return successors, (48), 10 states have call predecessors, (48), 6 states have call successors, (48) Word has length 263 [2023-12-20 00:54:36,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:54:36,104 INFO L225 Difference]: With dead ends: 64588 [2023-12-20 00:54:36,105 INFO L226 Difference]: Without dead ends: 33511 [2023-12-20 00:54:36,142 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 620 GetRequests, 582 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=242, Invalid=1240, Unknown=0, NotChecked=0, Total=1482 [2023-12-20 00:54:36,143 INFO L413 NwaCegarLoop]: 693 mSDtfsCounter, 1330 mSDsluCounter, 5865 mSDsCounter, 0 mSdLazyCounter, 1976 mSolverCounterSat, 580 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1330 SdHoareTripleChecker+Valid, 6558 SdHoareTripleChecker+Invalid, 2556 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 580 IncrementalHoareTripleChecker+Valid, 1976 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-20 00:54:36,143 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1330 Valid, 6558 Invalid, 2556 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [580 Valid, 1976 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-20 00:54:36,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33511 states. [2023-12-20 00:54:43,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33511 to 31474. [2023-12-20 00:54:43,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31474 states, 23559 states have (on average 1.2204253151661786) internal successors, (28752), 23797 states have internal predecessors, (28752), 4836 states have call successors, (4836), 3078 states have call predecessors, (4836), 3078 states have return successors, (4836), 4598 states have call predecessors, (4836), 4836 states have call successors, (4836) [2023-12-20 00:54:43,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31474 states to 31474 states and 38424 transitions. [2023-12-20 00:54:43,875 INFO L78 Accepts]: Start accepts. Automaton has 31474 states and 38424 transitions. Word has length 263 [2023-12-20 00:54:43,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:54:43,875 INFO L495 AbstractCegarLoop]: Abstraction has 31474 states and 38424 transitions. [2023-12-20 00:54:43,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 11.368421052631579) internal successors, (216), 15 states have internal predecessors, (216), 6 states have call successors, (48), 4 states have call predecessors, (48), 8 states have return successors, (48), 10 states have call predecessors, (48), 6 states have call successors, (48) [2023-12-20 00:54:43,876 INFO L276 IsEmpty]: Start isEmpty. Operand 31474 states and 38424 transitions. [2023-12-20 00:54:43,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2023-12-20 00:54:43,892 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:54:43,893 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:54:43,902 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2023-12-20 00:54:44,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 00:54:44,100 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:54:44,100 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:54:44,100 INFO L85 PathProgramCache]: Analyzing trace with hash 816057275, now seen corresponding path program 1 times [2023-12-20 00:54:44,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:54:44,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435367172] [2023-12-20 00:54:44,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:54:44,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:54:44,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:54:45,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-20 00:54:45,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:54:45,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-20 00:54:45,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:54:45,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-20 00:54:45,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:54:45,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-12-20 00:54:45,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:54:45,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-20 00:54:45,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:54:45,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-20 00:54:45,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:54:45,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-20 00:54:45,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:54:45,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-20 00:54:45,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:54:45,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-20 00:54:45,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:54:45,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-20 00:54:45,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:54:45,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-20 00:54:45,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:54:45,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-20 00:54:45,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:54:45,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-12-20 00:54:45,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:54:45,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2023-12-20 00:54:45,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:54:45,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2023-12-20 00:54:45,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:54:45,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2023-12-20 00:54:45,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:54:45,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2023-12-20 00:54:45,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:54:45,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2023-12-20 00:54:45,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:54:45,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2023-12-20 00:54:45,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:54:45,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2023-12-20 00:54:45,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:54:45,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2023-12-20 00:54:45,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:54:45,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2023-12-20 00:54:45,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:54:45,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2023-12-20 00:54:45,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:54:45,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2023-12-20 00:54:45,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:54:45,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2023-12-20 00:54:45,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:54:45,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2023-12-20 00:54:45,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:54:45,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2023-12-20 00:54:45,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:54:45,572 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 37 proven. 42 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2023-12-20 00:54:45,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:54:45,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435367172] [2023-12-20 00:54:45,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435367172] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 00:54:45,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [472226510] [2023-12-20 00:54:45,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:54:45,572 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 00:54:45,572 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 00:54:45,601 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 00:54:45,603 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-12-20 00:54:45,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:54:45,808 INFO L262 TraceCheckSpWp]: Trace formula consists of 1028 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-20 00:54:45,811 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 00:54:46,347 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 120 proven. 160 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2023-12-20 00:54:46,347 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 00:54:47,740 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 26 proven. 53 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2023-12-20 00:54:47,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [472226510] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 00:54:47,740 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 00:54:47,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13, 13] total 38 [2023-12-20 00:54:47,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960812135] [2023-12-20 00:54:47,740 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 00:54:47,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-12-20 00:54:47,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:54:47,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-12-20 00:54:47,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=1280, Unknown=0, NotChecked=0, Total=1406 [2023-12-20 00:54:47,742 INFO L87 Difference]: Start difference. First operand 31474 states and 38424 transitions. Second operand has 38 states, 38 states have (on average 10.631578947368421) internal successors, (404), 38 states have internal predecessors, (404), 17 states have call successors, (77), 7 states have call predecessors, (77), 7 states have return successors, (76), 17 states have call predecessors, (76), 17 states have call successors, (76) [2023-12-20 00:55:08,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:55:08,709 INFO L93 Difference]: Finished difference Result 74029 states and 90651 transitions. [2023-12-20 00:55:08,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 178 states. [2023-12-20 00:55:08,710 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 10.631578947368421) internal successors, (404), 38 states have internal predecessors, (404), 17 states have call successors, (77), 7 states have call predecessors, (77), 7 states have return successors, (76), 17 states have call predecessors, (76), 17 states have call successors, (76) Word has length 264 [2023-12-20 00:55:08,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:55:08,820 INFO L225 Difference]: With dead ends: 74029 [2023-12-20 00:55:08,820 INFO L226 Difference]: Without dead ends: 45907 [2023-12-20 00:55:08,858 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 795 GetRequests, 585 SyntacticMatches, 0 SemanticMatches, 210 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16034 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=4425, Invalid=40307, Unknown=0, NotChecked=0, Total=44732 [2023-12-20 00:55:08,859 INFO L413 NwaCegarLoop]: 768 mSDtfsCounter, 2763 mSDsluCounter, 10856 mSDsCounter, 0 mSdLazyCounter, 6956 mSolverCounterSat, 789 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2763 SdHoareTripleChecker+Valid, 11624 SdHoareTripleChecker+Invalid, 7745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 789 IncrementalHoareTripleChecker+Valid, 6956 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-12-20 00:55:08,859 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2763 Valid, 11624 Invalid, 7745 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [789 Valid, 6956 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-12-20 00:55:08,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45907 states. [2023-12-20 00:55:18,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45907 to 41115. [2023-12-20 00:55:18,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41115 states, 30897 states have (on average 1.2234844806939185) internal successors, (37802), 31205 states have internal predecessors, (37802), 6226 states have call successors, (6226), 3991 states have call predecessors, (6226), 3991 states have return successors, (6226), 5918 states have call predecessors, (6226), 6226 states have call successors, (6226) [2023-12-20 00:55:18,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41115 states to 41115 states and 50254 transitions. [2023-12-20 00:55:18,917 INFO L78 Accepts]: Start accepts. Automaton has 41115 states and 50254 transitions. Word has length 264 [2023-12-20 00:55:18,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:55:18,918 INFO L495 AbstractCegarLoop]: Abstraction has 41115 states and 50254 transitions. [2023-12-20 00:55:18,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 10.631578947368421) internal successors, (404), 38 states have internal predecessors, (404), 17 states have call successors, (77), 7 states have call predecessors, (77), 7 states have return successors, (76), 17 states have call predecessors, (76), 17 states have call successors, (76) [2023-12-20 00:55:18,918 INFO L276 IsEmpty]: Start isEmpty. Operand 41115 states and 50254 transitions. [2023-12-20 00:55:18,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2023-12-20 00:55:18,937 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:55:18,937 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:55:18,945 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2023-12-20 00:55:19,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2023-12-20 00:55:19,145 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:55:19,145 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:55:19,145 INFO L85 PathProgramCache]: Analyzing trace with hash 1133349940, now seen corresponding path program 1 times [2023-12-20 00:55:19,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:55:19,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459965898] [2023-12-20 00:55:19,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:55:19,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:55:19,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:55:19,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-20 00:55:19,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:55:19,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-20 00:55:19,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:55:19,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-20 00:55:19,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:55:19,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-12-20 00:55:19,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:55:19,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-20 00:55:19,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:55:19,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-20 00:55:19,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:55:19,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-20 00:55:19,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:55:19,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-20 00:55:19,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:55:19,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-20 00:55:19,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:55:19,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-20 00:55:19,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:55:19,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-20 00:55:19,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:55:19,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-20 00:55:19,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:55:19,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-12-20 00:55:19,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:55:19,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-20 00:55:19,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:55:19,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2023-12-20 00:55:19,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:55:19,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2023-12-20 00:55:19,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:55:19,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2023-12-20 00:55:19,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:55:19,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2023-12-20 00:55:19,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:55:19,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2023-12-20 00:55:19,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:55:19,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2023-12-20 00:55:19,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:55:19,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2023-12-20 00:55:19,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:55:19,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2023-12-20 00:55:19,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:55:19,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2023-12-20 00:55:19,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:55:19,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2023-12-20 00:55:19,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:55:19,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2023-12-20 00:55:19,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:55:19,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2023-12-20 00:55:19,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:55:19,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2023-12-20 00:55:19,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:55:19,820 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 45 proven. 34 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2023-12-20 00:55:19,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:55:19,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459965898] [2023-12-20 00:55:19,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459965898] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 00:55:19,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [744457359] [2023-12-20 00:55:19,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:55:19,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 00:55:19,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 00:55:19,821 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 00:55:19,823 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-12-20 00:55:20,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:55:20,027 INFO L262 TraceCheckSpWp]: Trace formula consists of 1040 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-20 00:55:20,031 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 00:55:20,253 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 165 proven. 115 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2023-12-20 00:55:20,253 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 00:55:20,518 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 51 proven. 28 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2023-12-20 00:55:20,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [744457359] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 00:55:20,518 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 00:55:20,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 8] total 21 [2023-12-20 00:55:20,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729911112] [2023-12-20 00:55:20,518 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 00:55:20,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-20 00:55:20,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:55:20,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-20 00:55:20,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=364, Unknown=0, NotChecked=0, Total=420 [2023-12-20 00:55:20,520 INFO L87 Difference]: Start difference. First operand 41115 states and 50254 transitions. Second operand has 21 states, 21 states have (on average 16.333333333333332) internal successors, (343), 21 states have internal predecessors, (343), 10 states have call successors, (75), 5 states have call predecessors, (75), 6 states have return successors, (74), 10 states have call predecessors, (74), 10 states have call successors, (74) [2023-12-20 00:55:33,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:55:33,312 INFO L93 Difference]: Finished difference Result 83662 states and 102331 transitions. [2023-12-20 00:55:33,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2023-12-20 00:55:33,312 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 16.333333333333332) internal successors, (343), 21 states have internal predecessors, (343), 10 states have call successors, (75), 5 states have call predecessors, (75), 6 states have return successors, (74), 10 states have call predecessors, (74), 10 states have call successors, (74) Word has length 266 [2023-12-20 00:55:33,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:55:33,412 INFO L225 Difference]: With dead ends: 83662 [2023-12-20 00:55:33,412 INFO L226 Difference]: Without dead ends: 45556 [2023-12-20 00:55:33,453 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 678 GetRequests, 602 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1676 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=807, Invalid=5199, Unknown=0, NotChecked=0, Total=6006 [2023-12-20 00:55:33,453 INFO L413 NwaCegarLoop]: 418 mSDtfsCounter, 986 mSDsluCounter, 4427 mSDsCounter, 0 mSdLazyCounter, 2532 mSolverCounterSat, 336 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 986 SdHoareTripleChecker+Valid, 4845 SdHoareTripleChecker+Invalid, 2868 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 336 IncrementalHoareTripleChecker+Valid, 2532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-20 00:55:33,453 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [986 Valid, 4845 Invalid, 2868 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [336 Valid, 2532 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-20 00:55:33,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45556 states. [2023-12-20 00:55:43,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45556 to 39581. [2023-12-20 00:55:43,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39581 states, 29802 states have (on average 1.2196496879404066) internal successors, (36348), 30093 states have internal predecessors, (36348), 5930 states have call successors, (5930), 3848 states have call predecessors, (5930), 3848 states have return successors, (5930), 5639 states have call predecessors, (5930), 5930 states have call successors, (5930) [2023-12-20 00:55:43,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39581 states to 39581 states and 48208 transitions. [2023-12-20 00:55:43,485 INFO L78 Accepts]: Start accepts. Automaton has 39581 states and 48208 transitions. Word has length 266 [2023-12-20 00:55:43,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:55:43,486 INFO L495 AbstractCegarLoop]: Abstraction has 39581 states and 48208 transitions. [2023-12-20 00:55:43,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 16.333333333333332) internal successors, (343), 21 states have internal predecessors, (343), 10 states have call successors, (75), 5 states have call predecessors, (75), 6 states have return successors, (74), 10 states have call predecessors, (74), 10 states have call successors, (74) [2023-12-20 00:55:43,486 INFO L276 IsEmpty]: Start isEmpty. Operand 39581 states and 48208 transitions. [2023-12-20 00:55:43,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2023-12-20 00:55:43,503 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:55:43,503 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:55:43,511 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2023-12-20 00:55:43,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2023-12-20 00:55:43,709 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:55:43,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:55:43,709 INFO L85 PathProgramCache]: Analyzing trace with hash -1828244164, now seen corresponding path program 1 times [2023-12-20 00:55:43,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:55:43,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986913554] [2023-12-20 00:55:43,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:55:43,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:55:43,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:55:44,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-20 00:55:44,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:55:44,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-20 00:55:44,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:55:44,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-20 00:55:44,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:55:44,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-20 00:55:44,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:55:44,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-20 00:55:44,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:55:44,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-20 00:55:44,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:55:44,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-20 00:55:44,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:55:44,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-20 00:55:44,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:55:44,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-20 00:55:44,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:55:44,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-20 00:55:44,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:55:44,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-20 00:55:44,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:55:44,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-20 00:55:44,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:55:44,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-12-20 00:55:44,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:55:44,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2023-12-20 00:55:44,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:55:44,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2023-12-20 00:55:44,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:55:44,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2023-12-20 00:55:44,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:55:44,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2023-12-20 00:55:44,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:55:44,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2023-12-20 00:55:44,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:55:44,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2023-12-20 00:55:44,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:55:44,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2023-12-20 00:55:44,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:55:44,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2023-12-20 00:55:44,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:55:44,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2023-12-20 00:55:44,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:55:44,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2023-12-20 00:55:44,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:55:44,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2023-12-20 00:55:44,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:55:44,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2023-12-20 00:55:44,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:55:44,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2023-12-20 00:55:44,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:55:44,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2023-12-20 00:55:44,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:55:44,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2023-12-20 00:55:44,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:55:44,362 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 56 proven. 33 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2023-12-20 00:55:44,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:55:44,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986913554] [2023-12-20 00:55:44,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986913554] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 00:55:44,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1543748458] [2023-12-20 00:55:44,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:55:44,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 00:55:44,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 00:55:44,363 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 00:55:44,365 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-12-20 00:55:44,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:55:44,568 INFO L262 TraceCheckSpWp]: Trace formula consists of 1023 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-20 00:55:44,571 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 00:55:45,235 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 163 proven. 158 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-12-20 00:55:45,235 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 00:55:45,787 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 41 proven. 48 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2023-12-20 00:55:45,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1543748458] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 00:55:45,787 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 00:55:45,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 25 [2023-12-20 00:55:45,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009744303] [2023-12-20 00:55:45,787 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 00:55:45,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-12-20 00:55:45,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:55:45,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-12-20 00:55:45,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=513, Unknown=0, NotChecked=0, Total=600 [2023-12-20 00:55:45,791 INFO L87 Difference]: Start difference. First operand 39581 states and 48208 transitions. Second operand has 25 states, 25 states have (on average 15.16) internal successors, (379), 25 states have internal predecessors, (379), 13 states have call successors, (79), 6 states have call predecessors, (79), 6 states have return successors, (78), 13 states have call predecessors, (78), 13 states have call successors, (78) [2023-12-20 00:55:57,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:55:57,654 INFO L93 Difference]: Finished difference Result 77845 states and 94999 transitions. [2023-12-20 00:55:57,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-12-20 00:55:57,655 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 15.16) internal successors, (379), 25 states have internal predecessors, (379), 13 states have call successors, (79), 6 states have call predecessors, (79), 6 states have return successors, (78), 13 states have call predecessors, (78), 13 states have call successors, (78) Word has length 267 [2023-12-20 00:55:57,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:55:57,761 INFO L225 Difference]: With dead ends: 77845 [2023-12-20 00:55:57,761 INFO L226 Difference]: Without dead ends: 39805 [2023-12-20 00:55:57,802 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 650 GetRequests, 586 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 897 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=810, Invalid=3480, Unknown=0, NotChecked=0, Total=4290 [2023-12-20 00:55:57,803 INFO L413 NwaCegarLoop]: 496 mSDtfsCounter, 2889 mSDsluCounter, 3787 mSDsCounter, 0 mSdLazyCounter, 2535 mSolverCounterSat, 956 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2889 SdHoareTripleChecker+Valid, 4283 SdHoareTripleChecker+Invalid, 3491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 956 IncrementalHoareTripleChecker+Valid, 2535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-20 00:55:57,803 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2889 Valid, 4283 Invalid, 3491 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [956 Valid, 2535 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-20 00:55:57,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39805 states. [2023-12-20 00:56:07,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39805 to 39533. [2023-12-20 00:56:07,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39533 states, 29754 states have (on average 1.216038179740539) internal successors, (36182), 30045 states have internal predecessors, (36182), 5930 states have call successors, (5930), 3848 states have call predecessors, (5930), 3848 states have return successors, (5930), 5639 states have call predecessors, (5930), 5930 states have call successors, (5930) [2023-12-20 00:56:07,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39533 states to 39533 states and 48042 transitions. [2023-12-20 00:56:07,887 INFO L78 Accepts]: Start accepts. Automaton has 39533 states and 48042 transitions. Word has length 267 [2023-12-20 00:56:07,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:56:07,887 INFO L495 AbstractCegarLoop]: Abstraction has 39533 states and 48042 transitions. [2023-12-20 00:56:07,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 15.16) internal successors, (379), 25 states have internal predecessors, (379), 13 states have call successors, (79), 6 states have call predecessors, (79), 6 states have return successors, (78), 13 states have call predecessors, (78), 13 states have call successors, (78) [2023-12-20 00:56:07,887 INFO L276 IsEmpty]: Start isEmpty. Operand 39533 states and 48042 transitions. [2023-12-20 00:56:07,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2023-12-20 00:56:07,906 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:56:07,906 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:56:07,916 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2023-12-20 00:56:08,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2023-12-20 00:56:08,112 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:56:08,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:56:08,112 INFO L85 PathProgramCache]: Analyzing trace with hash -275434109, now seen corresponding path program 1 times [2023-12-20 00:56:08,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:56:08,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880222540] [2023-12-20 00:56:08,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:56:08,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:56:08,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:56:08,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-20 00:56:08,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:56:08,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-20 00:56:08,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:56:08,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-20 00:56:08,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:56:08,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-20 00:56:08,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:56:08,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-20 00:56:08,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:56:08,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-20 00:56:08,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:56:08,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-20 00:56:08,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:56:08,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-20 00:56:08,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:56:08,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-20 00:56:08,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:56:08,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-20 00:56:08,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:56:08,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-20 00:56:08,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:56:08,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-20 00:56:08,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:56:08,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-12-20 00:56:08,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:56:08,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2023-12-20 00:56:08,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:56:08,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2023-12-20 00:56:08,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:56:08,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2023-12-20 00:56:08,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:56:08,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2023-12-20 00:56:08,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:56:08,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2023-12-20 00:56:08,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:56:08,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2023-12-20 00:56:08,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:56:08,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2023-12-20 00:56:08,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:56:08,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2023-12-20 00:56:08,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:56:08,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2023-12-20 00:56:08,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:56:08,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2023-12-20 00:56:08,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:56:08,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2023-12-20 00:56:08,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:56:08,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2023-12-20 00:56:08,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:56:08,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2023-12-20 00:56:08,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:56:08,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2023-12-20 00:56:08,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:56:08,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2023-12-20 00:56:08,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:56:08,436 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 40 proven. 53 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2023-12-20 00:56:08,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:56:08,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880222540] [2023-12-20 00:56:08,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880222540] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 00:56:08,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [183129213] [2023-12-20 00:56:08,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:56:08,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 00:56:08,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 00:56:08,437 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 00:56:08,439 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-12-20 00:56:08,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:56:08,646 INFO L262 TraceCheckSpWp]: Trace formula consists of 1025 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-20 00:56:08,650 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 00:56:09,167 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 200 proven. 133 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2023-12-20 00:56:09,167 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 00:56:09,901 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 57 proven. 36 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2023-12-20 00:56:09,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [183129213] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 00:56:09,902 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 00:56:09,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 10] total 28 [2023-12-20 00:56:09,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274308397] [2023-12-20 00:56:09,902 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 00:56:09,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-20 00:56:09,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:56:09,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-20 00:56:09,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=628, Unknown=0, NotChecked=0, Total=756 [2023-12-20 00:56:09,904 INFO L87 Difference]: Start difference. First operand 39533 states and 48042 transitions. Second operand has 28 states, 28 states have (on average 13.964285714285714) internal successors, (391), 28 states have internal predecessors, (391), 15 states have call successors, (79), 7 states have call predecessors, (79), 7 states have return successors, (78), 15 states have call predecessors, (78), 15 states have call successors, (78) [2023-12-20 00:56:23,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:56:23,659 INFO L93 Difference]: Finished difference Result 83826 states and 102251 transitions. [2023-12-20 00:56:23,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-12-20 00:56:23,660 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 13.964285714285714) internal successors, (391), 28 states have internal predecessors, (391), 15 states have call successors, (79), 7 states have call predecessors, (79), 7 states have return successors, (78), 15 states have call predecessors, (78), 15 states have call successors, (78) Word has length 269 [2023-12-20 00:56:23,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:56:23,771 INFO L225 Difference]: With dead ends: 83826 [2023-12-20 00:56:23,771 INFO L226 Difference]: Without dead ends: 47240 [2023-12-20 00:56:23,811 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 657 GetRequests, 584 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1376 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=998, Invalid=4552, Unknown=0, NotChecked=0, Total=5550 [2023-12-20 00:56:23,813 INFO L413 NwaCegarLoop]: 424 mSDtfsCounter, 1793 mSDsluCounter, 3965 mSDsCounter, 0 mSdLazyCounter, 3717 mSolverCounterSat, 418 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1793 SdHoareTripleChecker+Valid, 4389 SdHoareTripleChecker+Invalid, 4135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 418 IncrementalHoareTripleChecker+Valid, 3717 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-20 00:56:23,813 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1793 Valid, 4389 Invalid, 4135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [418 Valid, 3717 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-20 00:56:23,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47240 states. [2023-12-20 00:56:35,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47240 to 46559. [2023-12-20 00:56:35,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46559 states, 35066 states have (on average 1.2198711002110307) internal successors, (42776), 35408 states have internal predecessors, (42776), 6962 states have call successors, (6962), 4530 states have call predecessors, (6962), 4530 states have return successors, (6962), 6620 states have call predecessors, (6962), 6962 states have call successors, (6962) [2023-12-20 00:56:35,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46559 states to 46559 states and 56700 transitions. [2023-12-20 00:56:35,857 INFO L78 Accepts]: Start accepts. Automaton has 46559 states and 56700 transitions. Word has length 269 [2023-12-20 00:56:35,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:56:35,858 INFO L495 AbstractCegarLoop]: Abstraction has 46559 states and 56700 transitions. [2023-12-20 00:56:35,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 13.964285714285714) internal successors, (391), 28 states have internal predecessors, (391), 15 states have call successors, (79), 7 states have call predecessors, (79), 7 states have return successors, (78), 15 states have call predecessors, (78), 15 states have call successors, (78) [2023-12-20 00:56:35,858 INFO L276 IsEmpty]: Start isEmpty. Operand 46559 states and 56700 transitions. [2023-12-20 00:56:35,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2023-12-20 00:56:35,874 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:56:35,875 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:56:35,884 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2023-12-20 00:56:36,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 00:56:36,085 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:56:36,085 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:56:36,085 INFO L85 PathProgramCache]: Analyzing trace with hash -1240530148, now seen corresponding path program 1 times [2023-12-20 00:56:36,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:56:36,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481798827] [2023-12-20 00:56:36,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:56:36,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:56:36,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:56:37,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-20 00:56:37,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:56:37,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-20 00:56:37,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:56:37,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-20 00:56:37,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:56:37,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-12-20 00:56:37,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:56:37,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-20 00:56:37,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:56:37,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-20 00:56:37,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:56:37,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-20 00:56:37,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:56:37,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-20 00:56:37,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:56:37,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-20 00:56:37,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:56:37,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-20 00:56:37,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:56:37,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-20 00:56:37,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:56:37,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-20 00:56:37,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:56:37,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-12-20 00:56:37,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:56:37,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-12-20 00:56:37,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:56:37,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-20 00:56:37,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:56:37,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2023-12-20 00:56:37,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:56:37,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2023-12-20 00:56:37,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:56:37,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2023-12-20 00:56:37,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:56:37,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2023-12-20 00:56:37,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:56:37,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2023-12-20 00:56:37,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:56:37,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2023-12-20 00:56:37,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:56:37,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2023-12-20 00:56:37,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:56:37,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-12-20 00:56:37,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:56:37,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2023-12-20 00:56:37,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:56:37,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2023-12-20 00:56:37,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:56:37,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2023-12-20 00:56:37,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:56:37,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2023-12-20 00:56:37,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:56:37,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2023-12-20 00:56:37,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:56:37,090 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 50 proven. 40 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked. [2023-12-20 00:56:37,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:56:37,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481798827] [2023-12-20 00:56:37,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481798827] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 00:56:37,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1510134765] [2023-12-20 00:56:37,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:56:37,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 00:56:37,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 00:56:37,092 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 00:56:37,144 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-12-20 00:56:37,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:56:37,364 INFO L262 TraceCheckSpWp]: Trace formula consists of 1043 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-20 00:56:37,369 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 00:56:37,954 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 164 proven. 156 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2023-12-20 00:56:37,955 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 00:56:38,823 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 41 proven. 49 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked. [2023-12-20 00:56:38,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1510134765] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 00:56:38,823 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 00:56:38,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 12] total 32 [2023-12-20 00:56:38,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179781867] [2023-12-20 00:56:38,823 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 00:56:38,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-20 00:56:38,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:56:38,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-20 00:56:38,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=880, Unknown=0, NotChecked=0, Total=992 [2023-12-20 00:56:38,825 INFO L87 Difference]: Start difference. First operand 46559 states and 56700 transitions. Second operand has 32 states, 32 states have (on average 11.46875) internal successors, (367), 32 states have internal predecessors, (367), 14 states have call successors, (79), 7 states have call predecessors, (79), 8 states have return successors, (78), 14 states have call predecessors, (78), 14 states have call successors, (78) [2023-12-20 00:56:59,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:56:59,716 INFO L93 Difference]: Finished difference Result 104196 states and 126920 transitions. [2023-12-20 00:56:59,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2023-12-20 00:56:59,717 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 11.46875) internal successors, (367), 32 states have internal predecessors, (367), 14 states have call successors, (79), 7 states have call predecessors, (79), 8 states have return successors, (78), 14 states have call predecessors, (78), 14 states have call successors, (78) Word has length 270 [2023-12-20 00:56:59,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:56:59,882 INFO L225 Difference]: With dead ends: 104196 [2023-12-20 00:56:59,882 INFO L226 Difference]: Without dead ends: 58263 [2023-12-20 00:56:59,940 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 712 GetRequests, 599 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3726 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1766, Invalid=11344, Unknown=0, NotChecked=0, Total=13110 [2023-12-20 00:56:59,940 INFO L413 NwaCegarLoop]: 628 mSDtfsCounter, 1905 mSDsluCounter, 9122 mSDsCounter, 0 mSdLazyCounter, 7673 mSolverCounterSat, 504 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1905 SdHoareTripleChecker+Valid, 9750 SdHoareTripleChecker+Invalid, 8177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 504 IncrementalHoareTripleChecker+Valid, 7673 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-12-20 00:56:59,940 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1905 Valid, 9750 Invalid, 8177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [504 Valid, 7673 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-12-20 00:56:59,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58263 states. [2023-12-20 00:57:12,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58263 to 48128. [2023-12-20 00:57:12,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48128 states, 36191 states have (on average 1.2186178884252992) internal successors, (44103), 36553 states have internal predecessors, (44103), 7236 states have call successors, (7236), 4700 states have call predecessors, (7236), 4700 states have return successors, (7236), 6874 states have call predecessors, (7236), 7236 states have call successors, (7236) [2023-12-20 00:57:13,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48128 states to 48128 states and 58575 transitions. [2023-12-20 00:57:13,040 INFO L78 Accepts]: Start accepts. Automaton has 48128 states and 58575 transitions. Word has length 270 [2023-12-20 00:57:13,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:57:13,040 INFO L495 AbstractCegarLoop]: Abstraction has 48128 states and 58575 transitions. [2023-12-20 00:57:13,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 11.46875) internal successors, (367), 32 states have internal predecessors, (367), 14 states have call successors, (79), 7 states have call predecessors, (79), 8 states have return successors, (78), 14 states have call predecessors, (78), 14 states have call successors, (78) [2023-12-20 00:57:13,040 INFO L276 IsEmpty]: Start isEmpty. Operand 48128 states and 58575 transitions. [2023-12-20 00:57:13,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2023-12-20 00:57:13,054 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:57:13,054 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:57:13,062 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2023-12-20 00:57:13,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 00:57:13,261 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:57:13,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:57:13,262 INFO L85 PathProgramCache]: Analyzing trace with hash 366358307, now seen corresponding path program 1 times [2023-12-20 00:57:13,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:57:13,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629051798] [2023-12-20 00:57:13,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:57:13,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:57:13,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:57:13,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-20 00:57:13,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:57:13,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-20 00:57:13,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:57:13,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-20 00:57:13,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:57:13,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-20 00:57:13,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:57:13,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-20 00:57:13,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:57:13,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-20 00:57:13,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:57:13,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-20 00:57:13,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:57:13,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-20 00:57:13,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:57:13,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-20 00:57:13,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:57:13,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-20 00:57:13,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:57:13,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-20 00:57:13,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:57:13,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-12-20 00:57:13,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:57:13,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-12-20 00:57:13,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:57:13,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-20 00:57:13,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:57:13,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2023-12-20 00:57:13,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:57:13,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2023-12-20 00:57:13,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:57:13,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2023-12-20 00:57:13,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:57:13,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2023-12-20 00:57:13,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:57:13,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2023-12-20 00:57:13,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:57:13,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2023-12-20 00:57:13,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:57:13,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2023-12-20 00:57:13,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:57:13,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2023-12-20 00:57:13,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:57:13,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-12-20 00:57:13,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:57:13,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2023-12-20 00:57:13,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:57:13,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2023-12-20 00:57:13,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:57:13,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2023-12-20 00:57:13,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:57:13,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2023-12-20 00:57:13,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:57:13,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2023-12-20 00:57:13,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:57:13,945 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 55 proven. 39 refuted. 0 times theorem prover too weak. 271 trivial. 0 not checked. [2023-12-20 00:57:13,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:57:13,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629051798] [2023-12-20 00:57:13,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629051798] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 00:57:13,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [648732652] [2023-12-20 00:57:13,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:57:13,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 00:57:13,945 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 00:57:13,946 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 00:57:13,950 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-12-20 00:57:14,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:57:14,256 INFO L262 TraceCheckSpWp]: Trace formula consists of 1029 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-20 00:57:14,259 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 00:57:14,795 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 181 proven. 136 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-12-20 00:57:14,795 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 00:57:15,564 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 50 proven. 44 refuted. 0 times theorem prover too weak. 271 trivial. 0 not checked. [2023-12-20 00:57:15,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [648732652] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 00:57:15,564 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 00:57:15,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 8] total 21 [2023-12-20 00:57:15,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205402338] [2023-12-20 00:57:15,565 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 00:57:15,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-20 00:57:15,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:57:15,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-20 00:57:15,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2023-12-20 00:57:15,566 INFO L87 Difference]: Start difference. First operand 48128 states and 58575 transitions. Second operand has 21 states, 21 states have (on average 17.476190476190474) internal successors, (367), 21 states have internal predecessors, (367), 13 states have call successors, (69), 7 states have call predecessors, (69), 8 states have return successors, (68), 13 states have call predecessors, (68), 13 states have call successors, (68) [2023-12-20 00:57:30,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:57:30,445 INFO L93 Difference]: Finished difference Result 100694 states and 122655 transitions. [2023-12-20 00:57:30,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-12-20 00:57:30,446 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 17.476190476190474) internal successors, (367), 21 states have internal predecessors, (367), 13 states have call successors, (69), 7 states have call predecessors, (69), 8 states have return successors, (68), 13 states have call predecessors, (68), 13 states have call successors, (68) Word has length 270 [2023-12-20 00:57:30,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:57:30,599 INFO L225 Difference]: With dead ends: 100694 [2023-12-20 00:57:30,600 INFO L226 Difference]: Without dead ends: 54833 [2023-12-20 00:57:30,656 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 648 GetRequests, 592 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 835 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=600, Invalid=2592, Unknown=0, NotChecked=0, Total=3192 [2023-12-20 00:57:30,657 INFO L413 NwaCegarLoop]: 485 mSDtfsCounter, 1050 mSDsluCounter, 3040 mSDsCounter, 0 mSdLazyCounter, 2326 mSolverCounterSat, 269 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1051 SdHoareTripleChecker+Valid, 3525 SdHoareTripleChecker+Invalid, 2595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 269 IncrementalHoareTripleChecker+Valid, 2326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-20 00:57:30,658 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1051 Valid, 3525 Invalid, 2595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [269 Valid, 2326 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-20 00:57:30,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54833 states. [2023-12-20 00:57:44,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54833 to 53143. [2023-12-20 00:57:45,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53143 states, 40009 states have (on average 1.219400634857157) internal successors, (48787), 40416 states have internal predecessors, (48787), 7949 states have call successors, (7949), 5184 states have call predecessors, (7949), 5184 states have return successors, (7949), 7542 states have call predecessors, (7949), 7949 states have call successors, (7949) [2023-12-20 00:57:45,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53143 states to 53143 states and 64685 transitions. [2023-12-20 00:57:45,130 INFO L78 Accepts]: Start accepts. Automaton has 53143 states and 64685 transitions. Word has length 270 [2023-12-20 00:57:45,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:57:45,130 INFO L495 AbstractCegarLoop]: Abstraction has 53143 states and 64685 transitions. [2023-12-20 00:57:45,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 17.476190476190474) internal successors, (367), 21 states have internal predecessors, (367), 13 states have call successors, (69), 7 states have call predecessors, (69), 8 states have return successors, (68), 13 states have call predecessors, (68), 13 states have call successors, (68) [2023-12-20 00:57:45,131 INFO L276 IsEmpty]: Start isEmpty. Operand 53143 states and 64685 transitions. [2023-12-20 00:57:45,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2023-12-20 00:57:45,144 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:57:45,144 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:57:45,151 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2023-12-20 00:57:45,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable62 [2023-12-20 00:57:45,351 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:57:45,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:57:45,351 INFO L85 PathProgramCache]: Analyzing trace with hash 700102398, now seen corresponding path program 1 times [2023-12-20 00:57:45,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:57:45,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680408445] [2023-12-20 00:57:45,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:57:45,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:57:45,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:57:46,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-20 00:57:46,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:57:46,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-20 00:57:46,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:57:46,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-20 00:57:46,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:57:46,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-12-20 00:57:46,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:57:46,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-20 00:57:46,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:57:46,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-20 00:57:46,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:57:46,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-20 00:57:46,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:57:46,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-20 00:57:46,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:57:46,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-20 00:57:46,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:57:46,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-20 00:57:46,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:57:46,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-20 00:57:46,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:57:46,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-20 00:57:46,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:57:46,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-12-20 00:57:46,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:57:46,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-20 00:57:46,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:57:46,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2023-12-20 00:57:46,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:57:46,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2023-12-20 00:57:46,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:57:46,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2023-12-20 00:57:46,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:57:46,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2023-12-20 00:57:46,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:57:46,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2023-12-20 00:57:46,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:57:46,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2023-12-20 00:57:46,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:57:46,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2023-12-20 00:57:46,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:57:46,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2023-12-20 00:57:46,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:57:46,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2023-12-20 00:57:46,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:57:46,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2023-12-20 00:57:46,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:57:46,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2023-12-20 00:57:46,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:57:46,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2023-12-20 00:57:46,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:57:46,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2023-12-20 00:57:46,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:57:46,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2023-12-20 00:57:46,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:57:46,531 INFO L134 CoverageAnalysis]: Checked inductivity of 349 backedges. 29 proven. 50 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2023-12-20 00:57:46,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:57:46,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680408445] [2023-12-20 00:57:46,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680408445] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 00:57:46,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1309659521] [2023-12-20 00:57:46,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:57:46,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 00:57:46,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 00:57:46,532 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 00:57:46,534 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-12-20 00:57:46,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:57:46,748 INFO L262 TraceCheckSpWp]: Trace formula consists of 1057 conjuncts, 43 conjunts are in the unsatisfiable core [2023-12-20 00:57:46,752 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 00:57:48,704 INFO L134 CoverageAnalysis]: Checked inductivity of 349 backedges. 137 proven. 163 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2023-12-20 00:57:48,704 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 00:57:50,808 INFO L134 CoverageAnalysis]: Checked inductivity of 349 backedges. 49 proven. 30 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2023-12-20 00:57:50,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1309659521] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 00:57:50,808 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 00:57:50,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 10] total 27 [2023-12-20 00:57:50,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727410211] [2023-12-20 00:57:50,808 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 00:57:50,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-12-20 00:57:50,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:57:50,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-12-20 00:57:50,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=591, Unknown=0, NotChecked=0, Total=702 [2023-12-20 00:57:50,814 INFO L87 Difference]: Start difference. First operand 53143 states and 64685 transitions. Second operand has 27 states, 27 states have (on average 14.481481481481481) internal successors, (391), 27 states have internal predecessors, (391), 16 states have call successors, (79), 8 states have call predecessors, (79), 8 states have return successors, (78), 16 states have call predecessors, (78), 16 states have call successors, (78) [2023-12-20 00:58:07,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:58:07,733 INFO L93 Difference]: Finished difference Result 100072 states and 122242 transitions. [2023-12-20 00:58:07,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2023-12-20 00:58:07,734 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 14.481481481481481) internal successors, (391), 27 states have internal predecessors, (391), 16 states have call successors, (79), 8 states have call predecessors, (79), 8 states have return successors, (78), 16 states have call predecessors, (78), 16 states have call successors, (78) Word has length 272 [2023-12-20 00:58:07,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:58:07,863 INFO L225 Difference]: With dead ends: 100072 [2023-12-20 00:58:07,863 INFO L226 Difference]: Without dead ends: 48851 [2023-12-20 00:58:07,922 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 679 GetRequests, 600 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1979 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1458, Invalid=5022, Unknown=0, NotChecked=0, Total=6480 [2023-12-20 00:58:07,922 INFO L413 NwaCegarLoop]: 334 mSDtfsCounter, 996 mSDsluCounter, 1905 mSDsCounter, 0 mSdLazyCounter, 1266 mSolverCounterSat, 285 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 996 SdHoareTripleChecker+Valid, 2239 SdHoareTripleChecker+Invalid, 1551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 285 IncrementalHoareTripleChecker+Valid, 1266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-20 00:58:07,923 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [996 Valid, 2239 Invalid, 1551 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [285 Valid, 1266 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-20 00:58:07,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48851 states. [2023-12-20 00:58:22,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48851 to 48018. [2023-12-20 00:58:22,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48018 states, 36152 states have (on average 1.224551892011507) internal successors, (44270), 36517 states have internal predecessors, (44270), 7222 states have call successors, (7222), 4643 states have call predecessors, (7222), 4643 states have return successors, (7222), 6857 states have call predecessors, (7222), 7222 states have call successors, (7222) [2023-12-20 00:58:22,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48018 states to 48018 states and 58714 transitions. [2023-12-20 00:58:22,398 INFO L78 Accepts]: Start accepts. Automaton has 48018 states and 58714 transitions. Word has length 272 [2023-12-20 00:58:22,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:58:22,399 INFO L495 AbstractCegarLoop]: Abstraction has 48018 states and 58714 transitions. [2023-12-20 00:58:22,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 14.481481481481481) internal successors, (391), 27 states have internal predecessors, (391), 16 states have call successors, (79), 8 states have call predecessors, (79), 8 states have return successors, (78), 16 states have call predecessors, (78), 16 states have call successors, (78) [2023-12-20 00:58:22,399 INFO L276 IsEmpty]: Start isEmpty. Operand 48018 states and 58714 transitions. [2023-12-20 00:58:22,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2023-12-20 00:58:22,413 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:58:22,413 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 7, 7, 7, 7, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:58:22,422 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2023-12-20 00:58:22,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 00:58:22,626 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:58:22,626 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:58:22,626 INFO L85 PathProgramCache]: Analyzing trace with hash 504045621, now seen corresponding path program 1 times [2023-12-20 00:58:22,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:58:22,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646444994] [2023-12-20 00:58:22,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:58:22,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:58:22,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:58:22,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-20 00:58:22,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:58:22,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-20 00:58:22,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:58:22,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-20 00:58:22,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:58:22,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-20 00:58:22,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:58:22,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-20 00:58:22,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:58:22,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-20 00:58:22,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:58:22,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-20 00:58:22,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:58:22,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-20 00:58:22,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:58:22,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-20 00:58:22,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:58:22,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-20 00:58:22,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:58:22,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-20 00:58:22,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:58:22,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-20 00:58:22,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:58:22,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-12-20 00:58:22,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:58:22,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2023-12-20 00:58:22,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:58:22,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2023-12-20 00:58:22,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:58:22,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2023-12-20 00:58:22,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:58:22,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2023-12-20 00:58:22,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:58:22,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2023-12-20 00:58:22,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:58:22,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2023-12-20 00:58:22,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:58:22,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2023-12-20 00:58:22,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:58:22,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2023-12-20 00:58:22,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:58:22,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2023-12-20 00:58:22,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:58:22,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2023-12-20 00:58:22,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:58:22,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2023-12-20 00:58:22,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:58:22,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2023-12-20 00:58:22,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:58:22,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2023-12-20 00:58:22,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:58:22,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2023-12-20 00:58:22,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:58:22,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2023-12-20 00:58:22,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:58:22,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2023-12-20 00:58:22,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:58:22,903 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 56 proven. 28 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2023-12-20 00:58:22,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:58:22,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646444994] [2023-12-20 00:58:22,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646444994] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 00:58:22,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [508475721] [2023-12-20 00:58:22,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:58:22,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 00:58:22,904 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 00:58:22,905 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 00:58:22,906 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-12-20 00:58:23,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:58:23,124 INFO L262 TraceCheckSpWp]: Trace formula consists of 1040 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-20 00:58:23,128 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 00:58:23,517 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 184 proven. 160 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2023-12-20 00:58:23,517 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 00:58:23,683 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 56 proven. 28 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2023-12-20 00:58:23,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [508475721] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 00:58:23,684 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 00:58:23,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 7] total 20 [2023-12-20 00:58:23,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641073873] [2023-12-20 00:58:23,685 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 00:58:23,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-20 00:58:23,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:58:23,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-20 00:58:23,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2023-12-20 00:58:23,686 INFO L87 Difference]: Start difference. First operand 48018 states and 58714 transitions. Second operand has 20 states, 20 states have (on average 16.95) internal successors, (339), 20 states have internal predecessors, (339), 11 states have call successors, (69), 6 states have call predecessors, (69), 7 states have return successors, (68), 11 states have call predecessors, (68), 11 states have call successors, (68) [2023-12-20 00:58:38,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:58:38,014 INFO L93 Difference]: Finished difference Result 96383 states and 117934 transitions. [2023-12-20 00:58:38,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-12-20 00:58:38,015 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 16.95) internal successors, (339), 20 states have internal predecessors, (339), 11 states have call successors, (69), 6 states have call predecessors, (69), 7 states have return successors, (68), 11 states have call predecessors, (68), 11 states have call successors, (68) Word has length 274 [2023-12-20 00:58:38,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:58:38,119 INFO L225 Difference]: With dead ends: 96383 [2023-12-20 00:58:38,119 INFO L226 Difference]: Without dead ends: 49025 [2023-12-20 00:58:38,163 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 652 GetRequests, 607 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 467 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=400, Invalid=1762, Unknown=0, NotChecked=0, Total=2162 [2023-12-20 00:58:38,163 INFO L413 NwaCegarLoop]: 323 mSDtfsCounter, 721 mSDsluCounter, 2022 mSDsCounter, 0 mSdLazyCounter, 1493 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 726 SdHoareTripleChecker+Valid, 2345 SdHoareTripleChecker+Invalid, 1669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 1493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-20 00:58:38,163 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [726 Valid, 2345 Invalid, 1669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [176 Valid, 1493 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-20 00:58:38,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49025 states. [2023-12-20 00:58:51,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49025 to 48156. [2023-12-20 00:58:51,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48156 states, 36262 states have (on average 1.2128950416413877) internal successors, (43982), 36627 states have internal predecessors, (43982), 7236 states have call successors, (7236), 4657 states have call predecessors, (7236), 4657 states have return successors, (7236), 6871 states have call predecessors, (7236), 7236 states have call successors, (7236) [2023-12-20 00:58:51,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48156 states to 48156 states and 58454 transitions. [2023-12-20 00:58:51,749 INFO L78 Accepts]: Start accepts. Automaton has 48156 states and 58454 transitions. Word has length 274 [2023-12-20 00:58:51,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:58:51,750 INFO L495 AbstractCegarLoop]: Abstraction has 48156 states and 58454 transitions. [2023-12-20 00:58:51,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 16.95) internal successors, (339), 20 states have internal predecessors, (339), 11 states have call successors, (69), 6 states have call predecessors, (69), 7 states have return successors, (68), 11 states have call predecessors, (68), 11 states have call successors, (68) [2023-12-20 00:58:51,750 INFO L276 IsEmpty]: Start isEmpty. Operand 48156 states and 58454 transitions. [2023-12-20 00:58:51,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2023-12-20 00:58:51,762 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:58:51,762 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 7, 7, 7, 7, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:58:51,769 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2023-12-20 00:58:51,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 00:58:51,964 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:58:51,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:58:51,965 INFO L85 PathProgramCache]: Analyzing trace with hash -1123839403, now seen corresponding path program 1 times [2023-12-20 00:58:51,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:58:51,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994391101] [2023-12-20 00:58:51,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:58:51,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:58:52,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:58:52,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-20 00:58:52,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:58:52,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-20 00:58:52,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:58:52,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-20 00:58:52,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:58:52,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-20 00:58:52,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:58:52,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-20 00:58:52,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:58:52,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-20 00:58:52,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:58:52,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-20 00:58:52,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:58:52,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-20 00:58:52,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:58:52,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-20 00:58:52,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:58:52,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-20 00:58:52,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:58:52,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-20 00:58:52,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:58:52,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-20 00:58:52,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:58:52,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-12-20 00:58:52,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:58:52,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2023-12-20 00:58:52,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:58:52,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2023-12-20 00:58:52,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:58:52,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2023-12-20 00:58:52,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:58:52,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2023-12-20 00:58:52,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:58:52,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2023-12-20 00:58:52,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:58:52,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2023-12-20 00:58:52,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:58:52,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2023-12-20 00:58:52,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:58:52,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2023-12-20 00:58:52,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:58:52,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2023-12-20 00:58:52,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:58:52,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2023-12-20 00:58:52,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:58:52,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2023-12-20 00:58:52,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:58:52,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2023-12-20 00:58:52,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:58:52,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2023-12-20 00:58:52,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:58:52,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2023-12-20 00:58:52,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:58:52,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2023-12-20 00:58:52,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:58:52,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2023-12-20 00:58:52,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:58:52,576 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 52 proven. 36 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2023-12-20 00:58:52,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:58:52,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994391101] [2023-12-20 00:58:52,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994391101] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 00:58:52,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1282263891] [2023-12-20 00:58:52,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:58:52,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 00:58:52,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 00:58:52,577 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 00:58:52,579 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2023-12-20 00:58:52,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:58:52,787 INFO L262 TraceCheckSpWp]: Trace formula consists of 1044 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-20 00:58:52,790 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 00:58:53,266 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 218 proven. 130 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2023-12-20 00:58:53,266 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 00:58:53,963 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 56 proven. 32 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2023-12-20 00:58:53,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1282263891] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 00:58:53,963 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 00:58:53,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 22 [2023-12-20 00:58:53,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198949157] [2023-12-20 00:58:53,965 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 00:58:53,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-20 00:58:53,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:58:53,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-20 00:58:53,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=349, Unknown=0, NotChecked=0, Total=462 [2023-12-20 00:58:53,967 INFO L87 Difference]: Start difference. First operand 48156 states and 58454 transitions. Second operand has 22 states, 22 states have (on average 15.818181818181818) internal successors, (348), 22 states have internal predecessors, (348), 13 states have call successors, (71), 6 states have call predecessors, (71), 6 states have return successors, (70), 13 states have call predecessors, (70), 13 states have call successors, (70) [2023-12-20 00:59:04,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:59:04,056 INFO L93 Difference]: Finished difference Result 80624 states and 97864 transitions. [2023-12-20 00:59:04,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-12-20 00:59:04,057 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 15.818181818181818) internal successors, (348), 22 states have internal predecessors, (348), 13 states have call successors, (71), 6 states have call predecessors, (71), 6 states have return successors, (70), 13 states have call predecessors, (70), 13 states have call successors, (70) Word has length 277 [2023-12-20 00:59:04,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:59:04,145 INFO L225 Difference]: With dead ends: 80624 [2023-12-20 00:59:04,146 INFO L226 Difference]: Without dead ends: 33847 [2023-12-20 00:59:04,201 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 653 GetRequests, 612 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 413 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=537, Invalid=1269, Unknown=0, NotChecked=0, Total=1806 [2023-12-20 00:59:04,202 INFO L413 NwaCegarLoop]: 369 mSDtfsCounter, 1299 mSDsluCounter, 1169 mSDsCounter, 0 mSdLazyCounter, 806 mSolverCounterSat, 443 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1299 SdHoareTripleChecker+Valid, 1538 SdHoareTripleChecker+Invalid, 1249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 443 IncrementalHoareTripleChecker+Valid, 806 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-20 00:59:04,202 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1299 Valid, 1538 Invalid, 1249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [443 Valid, 806 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-20 00:59:04,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33847 states. [2023-12-20 00:59:13,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33847 to 33700. [2023-12-20 00:59:13,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33700 states, 25679 states have (on average 1.2115736594104132) internal successors, (31112), 25926 states have internal predecessors, (31112), 4810 states have call successors, (4810), 3210 states have call predecessors, (4810), 3210 states have return successors, (4810), 4563 states have call predecessors, (4810), 4810 states have call successors, (4810) [2023-12-20 00:59:13,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33700 states to 33700 states and 40732 transitions. [2023-12-20 00:59:13,864 INFO L78 Accepts]: Start accepts. Automaton has 33700 states and 40732 transitions. Word has length 277 [2023-12-20 00:59:13,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:59:13,864 INFO L495 AbstractCegarLoop]: Abstraction has 33700 states and 40732 transitions. [2023-12-20 00:59:13,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 15.818181818181818) internal successors, (348), 22 states have internal predecessors, (348), 13 states have call successors, (71), 6 states have call predecessors, (71), 6 states have return successors, (70), 13 states have call predecessors, (70), 13 states have call successors, (70) [2023-12-20 00:59:13,864 INFO L276 IsEmpty]: Start isEmpty. Operand 33700 states and 40732 transitions. [2023-12-20 00:59:13,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2023-12-20 00:59:13,872 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:59:13,872 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:59:13,878 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2023-12-20 00:59:14,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2023-12-20 00:59:14,078 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:59:14,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:59:14,079 INFO L85 PathProgramCache]: Analyzing trace with hash 1880582005, now seen corresponding path program 1 times [2023-12-20 00:59:14,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:59:14,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703009661] [2023-12-20 00:59:14,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:59:14,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:59:14,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:59:14,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-20 00:59:14,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:59:14,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-20 00:59:14,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:59:14,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-20 00:59:14,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:59:14,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-20 00:59:14,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:59:14,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-20 00:59:14,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:59:14,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-20 00:59:14,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:59:14,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-20 00:59:14,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:59:14,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-20 00:59:14,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:59:14,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-20 00:59:14,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:59:14,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-20 00:59:14,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:59:14,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-20 00:59:14,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:59:14,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-12-20 00:59:14,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:59:14,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2023-12-20 00:59:14,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:59:14,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-12-20 00:59:14,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:59:14,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2023-12-20 00:59:14,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:59:14,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2023-12-20 00:59:15,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:59:15,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2023-12-20 00:59:15,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:59:15,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2023-12-20 00:59:15,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:59:15,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2023-12-20 00:59:15,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:59:15,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2023-12-20 00:59:15,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:59:15,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2023-12-20 00:59:15,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:59:15,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2023-12-20 00:59:15,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:59:15,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2023-12-20 00:59:15,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:59:15,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2023-12-20 00:59:15,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:59:15,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2023-12-20 00:59:15,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:59:15,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2023-12-20 00:59:15,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:59:15,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2023-12-20 00:59:15,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:59:15,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2023-12-20 00:59:15,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:59:15,012 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 65 proven. 20 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2023-12-20 00:59:15,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:59:15,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703009661] [2023-12-20 00:59:15,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703009661] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 00:59:15,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1753827907] [2023-12-20 00:59:15,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:59:15,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 00:59:15,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 00:59:15,037 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 00:59:15,040 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2023-12-20 00:59:15,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:59:15,254 INFO L262 TraceCheckSpWp]: Trace formula consists of 1069 conjuncts, 45 conjunts are in the unsatisfiable core [2023-12-20 00:59:15,258 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 00:59:15,934 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 180 proven. 132 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-12-20 00:59:15,935 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 00:59:16,613 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 65 proven. 20 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2023-12-20 00:59:16,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1753827907] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 00:59:16,613 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 00:59:16,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14, 9] total 29 [2023-12-20 00:59:16,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695590806] [2023-12-20 00:59:16,613 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 00:59:16,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-20 00:59:16,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:59:16,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-20 00:59:16,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=690, Unknown=0, NotChecked=0, Total=812 [2023-12-20 00:59:16,615 INFO L87 Difference]: Start difference. First operand 33700 states and 40732 transitions. Second operand has 29 states, 29 states have (on average 12.172413793103448) internal successors, (353), 29 states have internal predecessors, (353), 11 states have call successors, (67), 6 states have call predecessors, (67), 8 states have return successors, (66), 11 states have call predecessors, (66), 11 states have call successors, (66) [2023-12-20 00:59:27,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:59:27,903 INFO L93 Difference]: Finished difference Result 66689 states and 80824 transitions. [2023-12-20 00:59:27,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-12-20 00:59:27,904 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 12.172413793103448) internal successors, (353), 29 states have internal predecessors, (353), 11 states have call successors, (67), 6 states have call predecessors, (67), 8 states have return successors, (66), 11 states have call predecessors, (66), 11 states have call successors, (66) Word has length 279 [2023-12-20 00:59:27,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:59:27,976 INFO L225 Difference]: With dead ends: 66689 [2023-12-20 00:59:27,976 INFO L226 Difference]: Without dead ends: 34496 [2023-12-20 00:59:28,009 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 663 GetRequests, 605 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 844 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=501, Invalid=3039, Unknown=0, NotChecked=0, Total=3540 [2023-12-20 00:59:28,011 INFO L413 NwaCegarLoop]: 334 mSDtfsCounter, 660 mSDsluCounter, 3518 mSDsCounter, 0 mSdLazyCounter, 2813 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 666 SdHoareTripleChecker+Valid, 3852 SdHoareTripleChecker+Invalid, 2975 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 2813 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-20 00:59:28,011 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [666 Valid, 3852 Invalid, 2975 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 2813 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-20 00:59:28,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34496 states. [2023-12-20 00:59:37,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34496 to 33683. [2023-12-20 00:59:37,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33683 states, 25664 states have (on average 1.2115804239401495) internal successors, (31094), 25911 states have internal predecessors, (31094), 4809 states have call successors, (4809), 3209 states have call predecessors, (4809), 3209 states have return successors, (4809), 4562 states have call predecessors, (4809), 4809 states have call successors, (4809) [2023-12-20 00:59:37,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33683 states to 33683 states and 40712 transitions. [2023-12-20 00:59:37,649 INFO L78 Accepts]: Start accepts. Automaton has 33683 states and 40712 transitions. Word has length 279 [2023-12-20 00:59:37,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 00:59:37,650 INFO L495 AbstractCegarLoop]: Abstraction has 33683 states and 40712 transitions. [2023-12-20 00:59:37,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 12.172413793103448) internal successors, (353), 29 states have internal predecessors, (353), 11 states have call successors, (67), 6 states have call predecessors, (67), 8 states have return successors, (66), 11 states have call predecessors, (66), 11 states have call successors, (66) [2023-12-20 00:59:37,650 INFO L276 IsEmpty]: Start isEmpty. Operand 33683 states and 40712 transitions. [2023-12-20 00:59:37,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2023-12-20 00:59:37,659 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 00:59:37,659 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 00:59:37,666 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2023-12-20 00:59:37,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 00:59:37,866 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 00:59:37,866 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 00:59:37,866 INFO L85 PathProgramCache]: Analyzing trace with hash -679164871, now seen corresponding path program 1 times [2023-12-20 00:59:37,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 00:59:37,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702786864] [2023-12-20 00:59:37,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:59:37,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 00:59:37,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:59:38,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-20 00:59:38,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:59:38,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-20 00:59:38,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:59:38,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-20 00:59:38,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:59:38,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-12-20 00:59:38,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:59:38,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-20 00:59:38,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:59:38,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-20 00:59:38,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:59:38,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-20 00:59:38,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:59:38,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-20 00:59:38,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:59:38,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-20 00:59:38,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:59:38,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-20 00:59:38,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:59:38,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-20 00:59:38,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:59:38,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-20 00:59:38,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:59:38,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-12-20 00:59:38,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:59:38,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2023-12-20 00:59:38,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:59:38,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2023-12-20 00:59:38,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:59:38,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2023-12-20 00:59:38,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:59:38,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2023-12-20 00:59:38,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:59:38,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2023-12-20 00:59:38,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:59:38,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2023-12-20 00:59:38,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:59:38,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2023-12-20 00:59:38,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:59:38,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2023-12-20 00:59:38,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:59:38,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2023-12-20 00:59:38,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:59:38,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2023-12-20 00:59:38,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:59:38,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2023-12-20 00:59:38,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:59:38,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2023-12-20 00:59:38,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:59:38,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2023-12-20 00:59:38,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:59:38,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2023-12-20 00:59:38,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:59:38,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2023-12-20 00:59:38,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:59:38,539 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 46 proven. 50 refuted. 0 times theorem prover too weak. 278 trivial. 0 not checked. [2023-12-20 00:59:38,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 00:59:38,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702786864] [2023-12-20 00:59:38,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702786864] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 00:59:38,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1421395924] [2023-12-20 00:59:38,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 00:59:38,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 00:59:38,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 00:59:38,541 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 00:59:38,543 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2023-12-20 00:59:38,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 00:59:38,757 INFO L262 TraceCheckSpWp]: Trace formula consists of 1086 conjuncts, 35 conjunts are in the unsatisfiable core [2023-12-20 00:59:38,761 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 00:59:40,080 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 156 proven. 165 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2023-12-20 00:59:40,080 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 00:59:41,728 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 36 proven. 60 refuted. 0 times theorem prover too weak. 278 trivial. 0 not checked. [2023-12-20 00:59:41,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1421395924] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 00:59:41,729 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 00:59:41,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 30 [2023-12-20 00:59:41,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565528667] [2023-12-20 00:59:41,729 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 00:59:41,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-12-20 00:59:41,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 00:59:41,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-12-20 00:59:41,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=755, Unknown=0, NotChecked=0, Total=870 [2023-12-20 00:59:41,731 INFO L87 Difference]: Start difference. First operand 33683 states and 40712 transitions. Second operand has 30 states, 30 states have (on average 13.833333333333334) internal successors, (415), 30 states have internal predecessors, (415), 16 states have call successors, (79), 8 states have call predecessors, (79), 8 states have return successors, (78), 16 states have call predecessors, (78), 16 states have call successors, (78) [2023-12-20 00:59:55,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 00:59:55,519 INFO L93 Difference]: Finished difference Result 65979 states and 79754 transitions. [2023-12-20 00:59:55,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2023-12-20 00:59:55,520 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 13.833333333333334) internal successors, (415), 30 states have internal predecessors, (415), 16 states have call successors, (79), 8 states have call predecessors, (79), 8 states have return successors, (78), 16 states have call predecessors, (78), 16 states have call successors, (78) Word has length 280 [2023-12-20 00:59:55,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 00:59:55,599 INFO L225 Difference]: With dead ends: 65979 [2023-12-20 00:59:55,599 INFO L226 Difference]: Without dead ends: 33332 [2023-12-20 00:59:55,636 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 731 GetRequests, 623 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3466 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1919, Invalid=10071, Unknown=0, NotChecked=0, Total=11990 [2023-12-20 00:59:55,638 INFO L413 NwaCegarLoop]: 450 mSDtfsCounter, 4008 mSDsluCounter, 3852 mSDsCounter, 0 mSdLazyCounter, 2763 mSolverCounterSat, 1291 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4008 SdHoareTripleChecker+Valid, 4302 SdHoareTripleChecker+Invalid, 4054 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1291 IncrementalHoareTripleChecker+Valid, 2763 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-20 00:59:55,638 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4008 Valid, 4302 Invalid, 4054 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1291 Valid, 2763 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-20 00:59:55,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33332 states. [2023-12-20 01:00:04,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33332 to 30783. [2023-12-20 01:00:04,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30783 states, 23422 states have (on average 1.2014772436171122) internal successors, (28141), 23648 states have internal predecessors, (28141), 4413 states have call successors, (4413), 2947 states have call predecessors, (4413), 2947 states have return successors, (4413), 4187 states have call predecessors, (4413), 4413 states have call successors, (4413) [2023-12-20 01:00:04,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30783 states to 30783 states and 36967 transitions. [2023-12-20 01:00:04,779 INFO L78 Accepts]: Start accepts. Automaton has 30783 states and 36967 transitions. Word has length 280 [2023-12-20 01:00:04,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:00:04,779 INFO L495 AbstractCegarLoop]: Abstraction has 30783 states and 36967 transitions. [2023-12-20 01:00:04,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 13.833333333333334) internal successors, (415), 30 states have internal predecessors, (415), 16 states have call successors, (79), 8 states have call predecessors, (79), 8 states have return successors, (78), 16 states have call predecessors, (78), 16 states have call successors, (78) [2023-12-20 01:00:04,780 INFO L276 IsEmpty]: Start isEmpty. Operand 30783 states and 36967 transitions. [2023-12-20 01:00:04,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2023-12-20 01:00:04,787 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:00:04,787 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:00:04,793 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2023-12-20 01:00:04,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2023-12-20 01:00:04,994 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:00:04,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:00:04,994 INFO L85 PathProgramCache]: Analyzing trace with hash 669739165, now seen corresponding path program 1 times [2023-12-20 01:00:04,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:00:04,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181829813] [2023-12-20 01:00:04,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:00:04,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:00:05,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:05,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-20 01:00:05,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:05,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-20 01:00:05,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:05,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-20 01:00:05,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:05,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-12-20 01:00:05,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:05,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-20 01:00:05,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:05,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-20 01:00:05,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:05,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-20 01:00:05,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:05,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-20 01:00:05,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:05,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-20 01:00:05,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:05,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-20 01:00:05,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:05,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-20 01:00:05,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:05,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-20 01:00:05,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:05,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-12-20 01:00:05,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:05,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-20 01:00:05,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:05,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2023-12-20 01:00:05,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:05,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2023-12-20 01:00:05,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:05,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2023-12-20 01:00:05,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:05,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2023-12-20 01:00:05,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:05,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2023-12-20 01:00:05,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:05,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2023-12-20 01:00:05,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:05,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2023-12-20 01:00:05,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:05,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2023-12-20 01:00:05,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:05,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2023-12-20 01:00:05,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:05,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2023-12-20 01:00:05,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:05,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2023-12-20 01:00:05,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:05,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2023-12-20 01:00:05,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:05,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2023-12-20 01:00:05,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:05,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2023-12-20 01:00:05,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:05,094 INFO L134 CoverageAnalysis]: Checked inductivity of 368 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 314 trivial. 0 not checked. [2023-12-20 01:00:05,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:00:05,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181829813] [2023-12-20 01:00:05,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181829813] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:00:05,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:00:05,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 01:00:05,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470700401] [2023-12-20 01:00:05,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:00:05,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 01:00:05,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:00:05,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 01:00:05,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 01:00:05,096 INFO L87 Difference]: Start difference. First operand 30783 states and 36967 transitions. Second operand has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-20 01:00:10,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:00:10,176 INFO L93 Difference]: Finished difference Result 45020 states and 54013 transitions. [2023-12-20 01:00:10,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 01:00:10,176 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 280 [2023-12-20 01:00:10,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:00:10,211 INFO L225 Difference]: With dead ends: 45020 [2023-12-20 01:00:10,211 INFO L226 Difference]: Without dead ends: 15744 [2023-12-20 01:00:10,241 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 01:00:10,242 INFO L413 NwaCegarLoop]: 224 mSDtfsCounter, 9 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 645 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:00:10,242 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 645 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:00:10,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15744 states. [2023-12-20 01:00:15,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15744 to 15539. [2023-12-20 01:00:15,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15539 states, 11716 states have (on average 1.1814612495732333) internal successors, (13842), 11828 states have internal predecessors, (13842), 2302 states have call successors, (2302), 1520 states have call predecessors, (2302), 1520 states have return successors, (2302), 2190 states have call predecessors, (2302), 2302 states have call successors, (2302) [2023-12-20 01:00:15,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15539 states to 15539 states and 18446 transitions. [2023-12-20 01:00:15,271 INFO L78 Accepts]: Start accepts. Automaton has 15539 states and 18446 transitions. Word has length 280 [2023-12-20 01:00:15,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:00:15,271 INFO L495 AbstractCegarLoop]: Abstraction has 15539 states and 18446 transitions. [2023-12-20 01:00:15,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-20 01:00:15,272 INFO L276 IsEmpty]: Start isEmpty. Operand 15539 states and 18446 transitions. [2023-12-20 01:00:15,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2023-12-20 01:00:15,278 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:00:15,279 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:00:15,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2023-12-20 01:00:15,279 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:00:15,279 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:00:15,279 INFO L85 PathProgramCache]: Analyzing trace with hash -920599164, now seen corresponding path program 1 times [2023-12-20 01:00:15,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:00:15,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042546927] [2023-12-20 01:00:15,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:00:15,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:00:15,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:15,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-20 01:00:15,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:15,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-20 01:00:15,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:15,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-20 01:00:15,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:15,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-20 01:00:15,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:15,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-20 01:00:15,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:15,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-20 01:00:15,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:15,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-20 01:00:15,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:15,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-20 01:00:15,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:15,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-20 01:00:15,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:15,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-20 01:00:15,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:15,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-20 01:00:15,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:15,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-12-20 01:00:15,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:15,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2023-12-20 01:00:15,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:15,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-12-20 01:00:15,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:15,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2023-12-20 01:00:15,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:15,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2023-12-20 01:00:15,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:15,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2023-12-20 01:00:15,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:15,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2023-12-20 01:00:15,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:15,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2023-12-20 01:00:15,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:15,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2023-12-20 01:00:15,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:15,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2023-12-20 01:00:15,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:15,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2023-12-20 01:00:15,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:15,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2023-12-20 01:00:15,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:15,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2023-12-20 01:00:15,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:15,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2023-12-20 01:00:15,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:15,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2023-12-20 01:00:15,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:15,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2023-12-20 01:00:15,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:15,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2023-12-20 01:00:15,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:15,636 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 35 proven. 51 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2023-12-20 01:00:15,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:00:15,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042546927] [2023-12-20 01:00:15,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042546927] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 01:00:15,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [547288097] [2023-12-20 01:00:15,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:00:15,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:00:15,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:00:15,638 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 01:00:15,640 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2023-12-20 01:00:15,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:15,849 INFO L262 TraceCheckSpWp]: Trace formula consists of 1067 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-20 01:00:15,852 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 01:00:16,218 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 15 proven. 298 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-12-20 01:00:16,218 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 01:00:16,792 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 35 proven. 51 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2023-12-20 01:00:16,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [547288097] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 01:00:16,793 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 01:00:16,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 23 [2023-12-20 01:00:16,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372900498] [2023-12-20 01:00:16,793 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 01:00:16,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-20 01:00:16,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:00:16,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-20 01:00:16,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=437, Unknown=0, NotChecked=0, Total=506 [2023-12-20 01:00:16,794 INFO L87 Difference]: Start difference. First operand 15539 states and 18446 transitions. Second operand has 23 states, 23 states have (on average 16.652173913043477) internal successors, (383), 23 states have internal predecessors, (383), 13 states have call successors, (83), 7 states have call predecessors, (83), 7 states have return successors, (82), 12 states have call predecessors, (82), 12 states have call successors, (82) [2023-12-20 01:00:23,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:00:23,225 INFO L93 Difference]: Finished difference Result 29355 states and 34973 transitions. [2023-12-20 01:00:23,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2023-12-20 01:00:23,225 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 16.652173913043477) internal successors, (383), 23 states have internal predecessors, (383), 13 states have call successors, (83), 7 states have call predecessors, (83), 7 states have return successors, (82), 12 states have call predecessors, (82), 12 states have call successors, (82) Word has length 280 [2023-12-20 01:00:23,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:00:23,275 INFO L225 Difference]: With dead ends: 29355 [2023-12-20 01:00:23,275 INFO L226 Difference]: Without dead ends: 15305 [2023-12-20 01:00:23,293 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 675 GetRequests, 615 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 823 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=548, Invalid=3234, Unknown=0, NotChecked=0, Total=3782 [2023-12-20 01:00:23,293 INFO L413 NwaCegarLoop]: 323 mSDtfsCounter, 928 mSDsluCounter, 3496 mSDsCounter, 0 mSdLazyCounter, 2677 mSolverCounterSat, 263 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 932 SdHoareTripleChecker+Valid, 3819 SdHoareTripleChecker+Invalid, 2940 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 263 IncrementalHoareTripleChecker+Valid, 2677 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-20 01:00:23,293 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [932 Valid, 3819 Invalid, 2940 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [263 Valid, 2677 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-20 01:00:23,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15305 states. [2023-12-20 01:00:28,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15305 to 15254. [2023-12-20 01:00:28,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15254 states, 11505 states have (on average 1.179574098218166) internal successors, (13571), 11613 states have internal predecessors, (13571), 2256 states have call successors, (2256), 1492 states have call predecessors, (2256), 1492 states have return successors, (2256), 2148 states have call predecessors, (2256), 2256 states have call successors, (2256) [2023-12-20 01:00:28,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15254 states to 15254 states and 18083 transitions. [2023-12-20 01:00:28,404 INFO L78 Accepts]: Start accepts. Automaton has 15254 states and 18083 transitions. Word has length 280 [2023-12-20 01:00:28,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:00:28,404 INFO L495 AbstractCegarLoop]: Abstraction has 15254 states and 18083 transitions. [2023-12-20 01:00:28,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 16.652173913043477) internal successors, (383), 23 states have internal predecessors, (383), 13 states have call successors, (83), 7 states have call predecessors, (83), 7 states have return successors, (82), 12 states have call predecessors, (82), 12 states have call successors, (82) [2023-12-20 01:00:28,404 INFO L276 IsEmpty]: Start isEmpty. Operand 15254 states and 18083 transitions. [2023-12-20 01:00:28,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2023-12-20 01:00:28,411 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:00:28,411 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 7, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-20 01:00:28,423 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2023-12-20 01:00:28,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:00:28,618 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:00:28,619 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:00:28,619 INFO L85 PathProgramCache]: Analyzing trace with hash 278493381, now seen corresponding path program 1 times [2023-12-20 01:00:28,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:00:28,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29342119] [2023-12-20 01:00:28,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:00:28,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:00:28,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:28,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-20 01:00:28,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:28,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-20 01:00:28,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:28,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-20 01:00:28,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:28,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-12-20 01:00:28,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:28,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-20 01:00:28,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:28,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-20 01:00:28,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:28,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-20 01:00:28,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:28,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-20 01:00:28,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:28,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-20 01:00:28,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:28,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-20 01:00:28,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:28,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-20 01:00:28,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:28,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-20 01:00:28,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:28,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-12-20 01:00:28,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:28,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-12-20 01:00:28,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:28,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-20 01:00:28,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:28,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2023-12-20 01:00:28,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:28,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2023-12-20 01:00:28,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:28,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2023-12-20 01:00:28,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:28,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2023-12-20 01:00:28,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:28,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2023-12-20 01:00:28,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:28,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2023-12-20 01:00:28,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:28,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2023-12-20 01:00:28,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:28,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2023-12-20 01:00:28,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:28,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2023-12-20 01:00:28,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:28,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2023-12-20 01:00:28,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:28,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2023-12-20 01:00:28,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:28,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2023-12-20 01:00:28,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:28,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2023-12-20 01:00:28,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:28,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2023-12-20 01:00:28,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:28,806 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 393 trivial. 0 not checked. [2023-12-20 01:00:28,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:00:28,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29342119] [2023-12-20 01:00:28,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29342119] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:00:28,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:00:28,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 01:00:28,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37920695] [2023-12-20 01:00:28,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:00:28,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 01:00:28,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:00:28,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 01:00:28,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 01:00:28,807 INFO L87 Difference]: Start difference. First operand 15254 states and 18083 transitions. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-20 01:00:33,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:00:33,403 INFO L93 Difference]: Finished difference Result 29116 states and 34700 transitions. [2023-12-20 01:00:33,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 01:00:33,403 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 284 [2023-12-20 01:00:33,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:00:33,434 INFO L225 Difference]: With dead ends: 29116 [2023-12-20 01:00:33,434 INFO L226 Difference]: Without dead ends: 15072 [2023-12-20 01:00:33,450 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 01:00:33,450 INFO L413 NwaCegarLoop]: 222 mSDtfsCounter, 7 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 652 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:00:33,450 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 652 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:00:33,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15072 states. [2023-12-20 01:00:38,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15072 to 15072. [2023-12-20 01:00:38,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15072 states, 11414 states have (on average 1.1570877869283336) internal successors, (13207), 11522 states have internal predecessors, (13207), 2165 states have call successors, (2165), 1492 states have call predecessors, (2165), 1492 states have return successors, (2165), 2057 states have call predecessors, (2165), 2165 states have call successors, (2165) [2023-12-20 01:00:38,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15072 states to 15072 states and 17537 transitions. [2023-12-20 01:00:38,101 INFO L78 Accepts]: Start accepts. Automaton has 15072 states and 17537 transitions. Word has length 284 [2023-12-20 01:00:38,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:00:38,101 INFO L495 AbstractCegarLoop]: Abstraction has 15072 states and 17537 transitions. [2023-12-20 01:00:38,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2023-12-20 01:00:38,102 INFO L276 IsEmpty]: Start isEmpty. Operand 15072 states and 17537 transitions. [2023-12-20 01:00:38,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2023-12-20 01:00:38,108 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:00:38,108 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:00:38,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2023-12-20 01:00:38,109 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:00:38,109 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:00:38,109 INFO L85 PathProgramCache]: Analyzing trace with hash -2070541697, now seen corresponding path program 1 times [2023-12-20 01:00:38,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:00:38,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243434277] [2023-12-20 01:00:38,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:00:38,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:00:38,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:38,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-20 01:00:38,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:38,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-20 01:00:38,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:38,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-20 01:00:38,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:38,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-20 01:00:38,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:38,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-20 01:00:38,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:38,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-20 01:00:38,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:38,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-20 01:00:38,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:38,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-20 01:00:38,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:38,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-20 01:00:38,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:38,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-20 01:00:38,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:38,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-20 01:00:38,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:38,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-12-20 01:00:38,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:38,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2023-12-20 01:00:38,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:38,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-12-20 01:00:38,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:38,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2023-12-20 01:00:38,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:38,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2023-12-20 01:00:38,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:38,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2023-12-20 01:00:38,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:38,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2023-12-20 01:00:38,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:38,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2023-12-20 01:00:38,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:38,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2023-12-20 01:00:38,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:38,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2023-12-20 01:00:38,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:38,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2023-12-20 01:00:38,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:38,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2023-12-20 01:00:38,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:38,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2023-12-20 01:00:38,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:38,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2023-12-20 01:00:38,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:38,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2023-12-20 01:00:38,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:38,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2023-12-20 01:00:38,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:38,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2023-12-20 01:00:38,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:38,464 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 35 proven. 51 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2023-12-20 01:00:38,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:00:38,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243434277] [2023-12-20 01:00:38,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243434277] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 01:00:38,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1300844606] [2023-12-20 01:00:38,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:00:38,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:00:38,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:00:38,465 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 01:00:38,485 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2023-12-20 01:00:38,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:38,682 INFO L262 TraceCheckSpWp]: Trace formula consists of 1071 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-20 01:00:38,745 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 01:00:39,149 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 22 proven. 291 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-12-20 01:00:39,149 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 01:00:39,472 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 35 proven. 51 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2023-12-20 01:00:39,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1300844606] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 01:00:39,473 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 01:00:39,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 9] total 18 [2023-12-20 01:00:39,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387902884] [2023-12-20 01:00:39,473 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 01:00:39,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-20 01:00:39,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:00:39,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-20 01:00:39,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2023-12-20 01:00:39,474 INFO L87 Difference]: Start difference. First operand 15072 states and 17537 transitions. Second operand has 18 states, 18 states have (on average 18.166666666666668) internal successors, (327), 18 states have internal predecessors, (327), 10 states have call successors, (67), 7 states have call predecessors, (67), 7 states have return successors, (66), 9 states have call predecessors, (66), 9 states have call successors, (66) [2023-12-20 01:00:44,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:00:44,822 INFO L93 Difference]: Finished difference Result 29271 states and 34190 transitions. [2023-12-20 01:00:44,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-20 01:00:44,822 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 18.166666666666668) internal successors, (327), 18 states have internal predecessors, (327), 10 states have call successors, (67), 7 states have call predecessors, (67), 7 states have return successors, (66), 9 states have call predecessors, (66), 9 states have call successors, (66) Word has length 282 [2023-12-20 01:00:44,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:00:44,847 INFO L225 Difference]: With dead ends: 29271 [2023-12-20 01:00:44,847 INFO L226 Difference]: Without dead ends: 15684 [2023-12-20 01:00:44,861 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 653 GetRequests, 620 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=231, Invalid=959, Unknown=0, NotChecked=0, Total=1190 [2023-12-20 01:00:44,862 INFO L413 NwaCegarLoop]: 355 mSDtfsCounter, 795 mSDsluCounter, 2352 mSDsCounter, 0 mSdLazyCounter, 1294 mSolverCounterSat, 234 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 796 SdHoareTripleChecker+Valid, 2707 SdHoareTripleChecker+Invalid, 1528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 234 IncrementalHoareTripleChecker+Valid, 1294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-20 01:00:44,862 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [796 Valid, 2707 Invalid, 1528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [234 Valid, 1294 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-20 01:00:44,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15684 states. [2023-12-20 01:00:49,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15684 to 14892. [2023-12-20 01:00:49,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14892 states, 11284 states have (on average 1.1564161644806805) internal successors, (13049), 11388 states have internal predecessors, (13049), 2135 states have call successors, (2135), 1472 states have call predecessors, (2135), 1472 states have return successors, (2135), 2031 states have call predecessors, (2135), 2135 states have call successors, (2135) [2023-12-20 01:00:49,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14892 states to 14892 states and 17319 transitions. [2023-12-20 01:00:49,452 INFO L78 Accepts]: Start accepts. Automaton has 14892 states and 17319 transitions. Word has length 282 [2023-12-20 01:00:49,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:00:49,452 INFO L495 AbstractCegarLoop]: Abstraction has 14892 states and 17319 transitions. [2023-12-20 01:00:49,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 18.166666666666668) internal successors, (327), 18 states have internal predecessors, (327), 10 states have call successors, (67), 7 states have call predecessors, (67), 7 states have return successors, (66), 9 states have call predecessors, (66), 9 states have call successors, (66) [2023-12-20 01:00:49,452 INFO L276 IsEmpty]: Start isEmpty. Operand 14892 states and 17319 transitions. [2023-12-20 01:00:49,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2023-12-20 01:00:49,459 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:00:49,459 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:00:49,466 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2023-12-20 01:00:49,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:00:49,661 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:00:49,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:00:49,662 INFO L85 PathProgramCache]: Analyzing trace with hash -1857122069, now seen corresponding path program 1 times [2023-12-20 01:00:49,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:00:49,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748499392] [2023-12-20 01:00:49,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:00:49,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:00:49,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:51,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-20 01:00:51,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:51,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-20 01:00:51,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:51,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-20 01:00:51,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:51,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-12-20 01:00:51,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:51,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-20 01:00:51,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:51,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-20 01:00:51,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:51,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-20 01:00:51,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:51,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-20 01:00:51,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:51,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-20 01:00:51,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:51,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-20 01:00:51,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:51,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-20 01:00:51,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:51,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-20 01:00:51,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:51,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-12-20 01:00:51,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:51,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-12-20 01:00:51,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:51,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2023-12-20 01:00:51,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:51,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2023-12-20 01:00:51,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:51,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2023-12-20 01:00:51,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:51,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2023-12-20 01:00:51,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:51,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2023-12-20 01:00:51,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:51,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2023-12-20 01:00:51,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:51,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2023-12-20 01:00:51,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:51,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2023-12-20 01:00:51,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:51,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2023-12-20 01:00:51,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:51,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2023-12-20 01:00:51,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:51,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2023-12-20 01:00:51,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:51,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2023-12-20 01:00:51,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:51,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2023-12-20 01:00:51,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:51,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2023-12-20 01:00:51,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:51,220 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 50 proven. 47 refuted. 0 times theorem prover too weak. 278 trivial. 0 not checked. [2023-12-20 01:00:51,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:00:51,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748499392] [2023-12-20 01:00:51,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748499392] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 01:00:51,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1230367240] [2023-12-20 01:00:51,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:00:51,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:00:51,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:00:51,222 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 01:00:51,223 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2023-12-20 01:00:51,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:00:51,434 INFO L262 TraceCheckSpWp]: Trace formula consists of 1098 conjuncts, 59 conjunts are in the unsatisfiable core [2023-12-20 01:00:51,437 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 01:00:52,174 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 180 proven. 142 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2023-12-20 01:00:52,174 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 01:00:54,486 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 50 proven. 47 refuted. 0 times theorem prover too weak. 278 trivial. 0 not checked. [2023-12-20 01:00:54,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1230367240] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 01:00:54,486 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 01:00:54,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16, 15] total 33 [2023-12-20 01:00:54,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597143616] [2023-12-20 01:00:54,486 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 01:00:54,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-12-20 01:00:54,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:00:54,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-12-20 01:00:54,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=915, Unknown=0, NotChecked=0, Total=1056 [2023-12-20 01:00:54,488 INFO L87 Difference]: Start difference. First operand 14892 states and 17319 transitions. Second operand has 33 states, 33 states have (on average 10.030303030303031) internal successors, (331), 33 states have internal predecessors, (331), 11 states have call successors, (70), 7 states have call predecessors, (70), 8 states have return successors, (69), 11 states have call predecessors, (69), 11 states have call successors, (69) [2023-12-20 01:01:03,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:01:03,197 INFO L93 Difference]: Finished difference Result 29100 states and 33962 transitions. [2023-12-20 01:01:03,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2023-12-20 01:01:03,198 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 10.030303030303031) internal successors, (331), 33 states have internal predecessors, (331), 11 states have call successors, (70), 7 states have call predecessors, (70), 8 states have return successors, (69), 11 states have call predecessors, (69), 11 states have call successors, (69) Word has length 283 [2023-12-20 01:01:03,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:01:03,228 INFO L225 Difference]: With dead ends: 29100 [2023-12-20 01:01:03,229 INFO L226 Difference]: Without dead ends: 15693 [2023-12-20 01:01:03,244 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 707 GetRequests, 617 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2368 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1163, Invalid=7209, Unknown=0, NotChecked=0, Total=8372 [2023-12-20 01:01:03,245 INFO L413 NwaCegarLoop]: 538 mSDtfsCounter, 1334 mSDsluCounter, 5862 mSDsCounter, 0 mSdLazyCounter, 3876 mSolverCounterSat, 479 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1334 SdHoareTripleChecker+Valid, 6400 SdHoareTripleChecker+Invalid, 4355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 479 IncrementalHoareTripleChecker+Valid, 3876 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-20 01:01:03,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1334 Valid, 6400 Invalid, 4355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [479 Valid, 3876 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-20 01:01:03,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15693 states. [2023-12-20 01:01:07,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15693 to 15281. [2023-12-20 01:01:07,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15281 states, 11580 states have (on average 1.1568221070811744) internal successors, (13396), 11687 states have internal predecessors, (13396), 2188 states have call successors, (2188), 1512 states have call predecessors, (2188), 1512 states have return successors, (2188), 2081 states have call predecessors, (2188), 2188 states have call successors, (2188) [2023-12-20 01:01:08,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15281 states to 15281 states and 17772 transitions. [2023-12-20 01:01:08,026 INFO L78 Accepts]: Start accepts. Automaton has 15281 states and 17772 transitions. Word has length 283 [2023-12-20 01:01:08,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:01:08,027 INFO L495 AbstractCegarLoop]: Abstraction has 15281 states and 17772 transitions. [2023-12-20 01:01:08,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 10.030303030303031) internal successors, (331), 33 states have internal predecessors, (331), 11 states have call successors, (70), 7 states have call predecessors, (70), 8 states have return successors, (69), 11 states have call predecessors, (69), 11 states have call successors, (69) [2023-12-20 01:01:08,027 INFO L276 IsEmpty]: Start isEmpty. Operand 15281 states and 17772 transitions. [2023-12-20 01:01:08,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2023-12-20 01:01:08,034 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:01:08,034 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 9, 8, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-20 01:01:08,043 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2023-12-20 01:01:08,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable72 [2023-12-20 01:01:08,240 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:01:08,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:01:08,241 INFO L85 PathProgramCache]: Analyzing trace with hash 1248171352, now seen corresponding path program 1 times [2023-12-20 01:01:08,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:01:08,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662317700] [2023-12-20 01:01:08,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:01:08,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:01:08,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:08,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-20 01:01:08,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:08,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-20 01:01:08,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:08,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-20 01:01:08,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:08,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-12-20 01:01:08,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:08,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-20 01:01:08,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:08,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-20 01:01:08,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:08,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-20 01:01:08,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:08,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-20 01:01:08,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:08,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-20 01:01:08,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:08,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-20 01:01:08,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:08,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-20 01:01:08,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:08,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-20 01:01:08,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:08,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-12-20 01:01:08,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:08,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-12-20 01:01:08,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:08,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-20 01:01:08,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:08,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2023-12-20 01:01:08,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:08,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2023-12-20 01:01:08,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:08,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2023-12-20 01:01:08,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:08,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2023-12-20 01:01:08,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:08,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2023-12-20 01:01:08,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:08,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2023-12-20 01:01:08,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:08,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2023-12-20 01:01:08,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:08,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2023-12-20 01:01:08,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:08,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2023-12-20 01:01:08,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:08,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2023-12-20 01:01:08,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:08,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2023-12-20 01:01:08,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:08,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2023-12-20 01:01:08,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:08,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2023-12-20 01:01:08,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:08,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2023-12-20 01:01:08,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:08,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2023-12-20 01:01:08,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:08,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2023-12-20 01:01:08,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:08,426 INFO L134 CoverageAnalysis]: Checked inductivity of 494 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 476 trivial. 0 not checked. [2023-12-20 01:01:08,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:01:08,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662317700] [2023-12-20 01:01:08,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662317700] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:01:08,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:01:08,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 01:01:08,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987079868] [2023-12-20 01:01:08,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:01:08,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 01:01:08,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:01:08,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 01:01:08,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 01:01:08,427 INFO L87 Difference]: Start difference. First operand 15281 states and 17772 transitions. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-20 01:01:13,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:01:13,056 INFO L93 Difference]: Finished difference Result 29168 states and 34076 transitions. [2023-12-20 01:01:13,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 01:01:13,057 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 300 [2023-12-20 01:01:13,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:01:13,083 INFO L225 Difference]: With dead ends: 29168 [2023-12-20 01:01:13,083 INFO L226 Difference]: Without dead ends: 15097 [2023-12-20 01:01:13,095 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 01:01:13,096 INFO L413 NwaCegarLoop]: 218 mSDtfsCounter, 7 mSDsluCounter, 422 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 640 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:01:13,096 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 640 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:01:13,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15097 states. [2023-12-20 01:01:17,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15097 to 14722. [2023-12-20 01:01:17,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14722 states, 11218 states have (on average 1.1305936887145658) internal successors, (12683), 11325 states have internal predecessors, (12683), 2036 states have call successors, (2036), 1467 states have call predecessors, (2036), 1467 states have return successors, (2036), 1929 states have call predecessors, (2036), 2036 states have call successors, (2036) [2023-12-20 01:01:17,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14722 states to 14722 states and 16755 transitions. [2023-12-20 01:01:17,587 INFO L78 Accepts]: Start accepts. Automaton has 14722 states and 16755 transitions. Word has length 300 [2023-12-20 01:01:17,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:01:17,588 INFO L495 AbstractCegarLoop]: Abstraction has 14722 states and 16755 transitions. [2023-12-20 01:01:17,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2023-12-20 01:01:17,588 INFO L276 IsEmpty]: Start isEmpty. Operand 14722 states and 16755 transitions. [2023-12-20 01:01:17,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2023-12-20 01:01:17,598 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:01:17,598 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 9, 8, 7, 7, 7, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-20 01:01:17,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2023-12-20 01:01:17,598 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:01:17,598 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:01:17,598 INFO L85 PathProgramCache]: Analyzing trace with hash -2075362321, now seen corresponding path program 1 times [2023-12-20 01:01:17,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:01:17,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006487874] [2023-12-20 01:01:17,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:01:17,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:01:17,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:17,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-20 01:01:17,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:17,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-20 01:01:17,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:17,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-20 01:01:17,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:17,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-12-20 01:01:17,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:17,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-20 01:01:17,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:17,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-20 01:01:17,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:17,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-20 01:01:17,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:17,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-20 01:01:17,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:17,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-20 01:01:17,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:17,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-20 01:01:17,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:17,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-20 01:01:17,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:17,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-20 01:01:17,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:17,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-12-20 01:01:17,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:17,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-12-20 01:01:17,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:17,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-20 01:01:17,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:17,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2023-12-20 01:01:17,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:17,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2023-12-20 01:01:17,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:17,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2023-12-20 01:01:17,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:17,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2023-12-20 01:01:17,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:17,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2023-12-20 01:01:17,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:17,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2023-12-20 01:01:17,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:17,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2023-12-20 01:01:17,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:17,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2023-12-20 01:01:17,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:17,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2023-12-20 01:01:17,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:17,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2023-12-20 01:01:17,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:17,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2023-12-20 01:01:17,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:17,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2023-12-20 01:01:17,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:17,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2023-12-20 01:01:17,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:17,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2023-12-20 01:01:17,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:17,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2023-12-20 01:01:17,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:17,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2023-12-20 01:01:17,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:17,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2023-12-20 01:01:17,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:17,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2023-12-20 01:01:17,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:17,761 INFO L134 CoverageAnalysis]: Checked inductivity of 551 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 529 trivial. 0 not checked. [2023-12-20 01:01:17,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:01:17,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006487874] [2023-12-20 01:01:17,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006487874] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 01:01:17,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 01:01:17,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 01:01:17,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982523425] [2023-12-20 01:01:17,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 01:01:17,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 01:01:17,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:01:17,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 01:01:17,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 01:01:17,762 INFO L87 Difference]: Start difference. First operand 14722 states and 16755 transitions. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 3 states have internal predecessors, (112), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-20 01:01:22,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:01:22,126 INFO L93 Difference]: Finished difference Result 28003 states and 31918 transitions. [2023-12-20 01:01:22,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 01:01:22,127 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 3 states have internal predecessors, (112), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 316 [2023-12-20 01:01:22,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:01:22,161 INFO L225 Difference]: With dead ends: 28003 [2023-12-20 01:01:22,161 INFO L226 Difference]: Without dead ends: 14491 [2023-12-20 01:01:22,182 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 01:01:22,182 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 6 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 631 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 01:01:22,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 631 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 01:01:22,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14491 states. [2023-12-20 01:01:26,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14491 to 14075. [2023-12-20 01:01:26,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14075 states, 10756 states have (on average 1.1131461509854965) internal successors, (11973), 10851 states have internal predecessors, (11973), 1905 states have call successors, (1905), 1413 states have call predecessors, (1905), 1413 states have return successors, (1905), 1810 states have call predecessors, (1905), 1905 states have call successors, (1905) [2023-12-20 01:01:26,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14075 states to 14075 states and 15783 transitions. [2023-12-20 01:01:26,545 INFO L78 Accepts]: Start accepts. Automaton has 14075 states and 15783 transitions. Word has length 316 [2023-12-20 01:01:26,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:01:26,545 INFO L495 AbstractCegarLoop]: Abstraction has 14075 states and 15783 transitions. [2023-12-20 01:01:26,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 3 states have internal predecessors, (112), 2 states have call successors, (20), 3 states have call predecessors, (20), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-12-20 01:01:26,546 INFO L276 IsEmpty]: Start isEmpty. Operand 14075 states and 15783 transitions. [2023-12-20 01:01:26,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2023-12-20 01:01:26,558 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:01:26,558 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 9, 8, 8, 8, 7, 7, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-20 01:01:26,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2023-12-20 01:01:26,559 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:01:26,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:01:26,559 INFO L85 PathProgramCache]: Analyzing trace with hash 384173242, now seen corresponding path program 1 times [2023-12-20 01:01:26,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:01:26,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004899304] [2023-12-20 01:01:26,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:01:26,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:01:26,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:26,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-20 01:01:26,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:26,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-20 01:01:26,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:26,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-20 01:01:26,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:26,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-12-20 01:01:26,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:26,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-20 01:01:26,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:26,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-20 01:01:26,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:26,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-20 01:01:26,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:26,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-20 01:01:26,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:26,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-20 01:01:26,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:26,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-20 01:01:26,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:26,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-20 01:01:26,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:26,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-20 01:01:26,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:26,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-12-20 01:01:26,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:26,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-12-20 01:01:26,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:26,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-20 01:01:26,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:26,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2023-12-20 01:01:26,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:26,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2023-12-20 01:01:26,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:26,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2023-12-20 01:01:26,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:26,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2023-12-20 01:01:26,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:26,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2023-12-20 01:01:26,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:26,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2023-12-20 01:01:26,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:26,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2023-12-20 01:01:26,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:26,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2023-12-20 01:01:26,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:26,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2023-12-20 01:01:26,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:26,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2023-12-20 01:01:26,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:26,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2023-12-20 01:01:26,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:26,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2023-12-20 01:01:26,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:26,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2023-12-20 01:01:26,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:26,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2023-12-20 01:01:26,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:26,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2023-12-20 01:01:26,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:26,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2023-12-20 01:01:26,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:26,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2023-12-20 01:01:26,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:26,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2023-12-20 01:01:26,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:26,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2023-12-20 01:01:26,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:26,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2023-12-20 01:01:26,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:26,800 INFO L134 CoverageAnalysis]: Checked inductivity of 592 backedges. 94 proven. 20 refuted. 0 times theorem prover too weak. 478 trivial. 0 not checked. [2023-12-20 01:01:26,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:01:26,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004899304] [2023-12-20 01:01:26,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004899304] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 01:01:26,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [885295003] [2023-12-20 01:01:26,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:01:26,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:01:26,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:01:26,802 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 01:01:26,804 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2023-12-20 01:01:27,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:27,028 INFO L262 TraceCheckSpWp]: Trace formula consists of 1173 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-20 01:01:27,031 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 01:01:27,411 INFO L134 CoverageAnalysis]: Checked inductivity of 592 backedges. 452 proven. 8 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2023-12-20 01:01:27,411 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 01:01:27,533 INFO L134 CoverageAnalysis]: Checked inductivity of 592 backedges. 96 proven. 18 refuted. 0 times theorem prover too weak. 478 trivial. 0 not checked. [2023-12-20 01:01:27,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [885295003] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 01:01:27,533 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 01:01:27,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 21 [2023-12-20 01:01:27,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907347729] [2023-12-20 01:01:27,534 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 01:01:27,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-20 01:01:27,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:01:27,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-20 01:01:27,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=358, Unknown=0, NotChecked=0, Total=420 [2023-12-20 01:01:27,535 INFO L87 Difference]: Start difference. First operand 14075 states and 15783 transitions. Second operand has 21 states, 19 states have (on average 12.157894736842104) internal successors, (231), 17 states have internal predecessors, (231), 7 states have call successors, (56), 4 states have call predecessors, (56), 8 states have return successors, (56), 8 states have call predecessors, (56), 6 states have call successors, (56) [2023-12-20 01:01:36,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:01:36,823 INFO L93 Difference]: Finished difference Result 39201 states and 44152 transitions. [2023-12-20 01:01:36,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-20 01:01:36,824 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 12.157894736842104) internal successors, (231), 17 states have internal predecessors, (231), 7 states have call successors, (56), 4 states have call predecessors, (56), 8 states have return successors, (56), 8 states have call predecessors, (56), 6 states have call successors, (56) Word has length 326 [2023-12-20 01:01:36,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:01:36,911 INFO L225 Difference]: With dead ends: 39201 [2023-12-20 01:01:36,912 INFO L226 Difference]: Without dead ends: 26336 [2023-12-20 01:01:36,940 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 742 GetRequests, 716 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=115, Invalid=641, Unknown=0, NotChecked=0, Total=756 [2023-12-20 01:01:36,940 INFO L413 NwaCegarLoop]: 561 mSDtfsCounter, 234 mSDsluCounter, 5308 mSDsCounter, 0 mSdLazyCounter, 940 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 5869 SdHoareTripleChecker+Invalid, 949 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 940 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-20 01:01:36,941 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [240 Valid, 5869 Invalid, 949 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 940 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-20 01:01:36,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26336 states. [2023-12-20 01:01:44,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26336 to 22220. [2023-12-20 01:01:44,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22220 states, 16927 states have (on average 1.115141489927335) internal successors, (18876), 17061 states have internal predecessors, (18876), 3043 states have call successors, (3043), 2249 states have call predecessors, (3043), 2249 states have return successors, (3043), 2909 states have call predecessors, (3043), 3043 states have call successors, (3043) [2023-12-20 01:01:44,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22220 states to 22220 states and 24962 transitions. [2023-12-20 01:01:44,619 INFO L78 Accepts]: Start accepts. Automaton has 22220 states and 24962 transitions. Word has length 326 [2023-12-20 01:01:44,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:01:44,619 INFO L495 AbstractCegarLoop]: Abstraction has 22220 states and 24962 transitions. [2023-12-20 01:01:44,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 12.157894736842104) internal successors, (231), 17 states have internal predecessors, (231), 7 states have call successors, (56), 4 states have call predecessors, (56), 8 states have return successors, (56), 8 states have call predecessors, (56), 6 states have call successors, (56) [2023-12-20 01:01:44,619 INFO L276 IsEmpty]: Start isEmpty. Operand 22220 states and 24962 transitions. [2023-12-20 01:01:44,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2023-12-20 01:01:44,632 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:01:44,632 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 9, 8, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-20 01:01:44,638 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2023-12-20 01:01:44,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable75 [2023-12-20 01:01:44,839 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:01:44,839 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:01:44,839 INFO L85 PathProgramCache]: Analyzing trace with hash -2024119180, now seen corresponding path program 1 times [2023-12-20 01:01:44,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:01:44,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543906808] [2023-12-20 01:01:44,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:01:44,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:01:44,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:45,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-20 01:01:45,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:45,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-20 01:01:45,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:45,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-20 01:01:45,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:45,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-20 01:01:45,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:45,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-20 01:01:45,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:45,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-20 01:01:45,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:45,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-20 01:01:45,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:45,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-20 01:01:45,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:45,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-20 01:01:45,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:45,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-20 01:01:45,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:45,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-20 01:01:45,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:45,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-20 01:01:45,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:45,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-12-20 01:01:45,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:45,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2023-12-20 01:01:45,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:45,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2023-12-20 01:01:45,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:45,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2023-12-20 01:01:45,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:45,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2023-12-20 01:01:45,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:45,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2023-12-20 01:01:45,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:45,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2023-12-20 01:01:45,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:45,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2023-12-20 01:01:45,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:45,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2023-12-20 01:01:45,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:45,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2023-12-20 01:01:45,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:45,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2023-12-20 01:01:45,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:45,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2023-12-20 01:01:45,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:45,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2023-12-20 01:01:45,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:45,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2023-12-20 01:01:45,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:45,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2023-12-20 01:01:45,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:45,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2023-12-20 01:01:45,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:45,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2023-12-20 01:01:45,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:45,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2023-12-20 01:01:45,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:45,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2023-12-20 01:01:45,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:45,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2023-12-20 01:01:45,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:45,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2023-12-20 01:01:45,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:45,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2023-12-20 01:01:45,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:45,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2023-12-20 01:01:45,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:45,079 INFO L134 CoverageAnalysis]: Checked inductivity of 591 backedges. 73 proven. 15 refuted. 0 times theorem prover too weak. 503 trivial. 0 not checked. [2023-12-20 01:01:45,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:01:45,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543906808] [2023-12-20 01:01:45,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543906808] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 01:01:45,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1510776044] [2023-12-20 01:01:45,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:01:45,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:01:45,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:01:45,094 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 01:01:45,098 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2023-12-20 01:01:45,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:01:45,327 INFO L262 TraceCheckSpWp]: Trace formula consists of 1156 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-20 01:01:45,330 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 01:01:45,478 INFO L134 CoverageAnalysis]: Checked inductivity of 591 backedges. 420 proven. 62 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2023-12-20 01:01:45,478 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 01:01:45,658 INFO L134 CoverageAnalysis]: Checked inductivity of 591 backedges. 73 proven. 15 refuted. 0 times theorem prover too weak. 503 trivial. 0 not checked. [2023-12-20 01:01:45,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1510776044] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 01:01:45,659 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 01:01:45,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 16 [2023-12-20 01:01:45,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269561182] [2023-12-20 01:01:45,659 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 01:01:45,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-20 01:01:45,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:01:45,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-20 01:01:45,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2023-12-20 01:01:45,660 INFO L87 Difference]: Start difference. First operand 22220 states and 24962 transitions. Second operand has 16 states, 16 states have (on average 13.5) internal successors, (216), 13 states have internal predecessors, (216), 4 states have call successors, (54), 4 states have call predecessors, (54), 9 states have return successors, (56), 7 states have call predecessors, (56), 4 states have call successors, (56) [2023-12-20 01:02:01,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:02:01,805 INFO L93 Difference]: Finished difference Result 70757 states and 79067 transitions. [2023-12-20 01:02:01,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-20 01:02:01,805 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 13.5) internal successors, (216), 13 states have internal predecessors, (216), 4 states have call successors, (54), 4 states have call predecessors, (54), 9 states have return successors, (56), 7 states have call predecessors, (56), 4 states have call successors, (56) Word has length 326 [2023-12-20 01:02:01,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:02:01,917 INFO L225 Difference]: With dead ends: 70757 [2023-12-20 01:02:01,917 INFO L226 Difference]: Without dead ends: 49747 [2023-12-20 01:02:01,941 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 754 GetRequests, 726 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=170, Invalid=700, Unknown=0, NotChecked=0, Total=870 [2023-12-20 01:02:01,942 INFO L413 NwaCegarLoop]: 377 mSDtfsCounter, 572 mSDsluCounter, 3084 mSDsCounter, 0 mSdLazyCounter, 822 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 593 SdHoareTripleChecker+Valid, 3461 SdHoareTripleChecker+Invalid, 961 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 822 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-20 01:02:01,942 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [593 Valid, 3461 Invalid, 961 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 822 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-20 01:02:01,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49747 states. [2023-12-20 01:02:14,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49747 to 39026. [2023-12-20 01:02:14,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39026 states, 29617 states have (on average 1.1057163115778101) internal successors, (32748), 29845 states have internal predecessors, (32748), 5384 states have call successors, (5384), 4024 states have call predecessors, (5384), 4024 states have return successors, (5384), 5156 states have call predecessors, (5384), 5384 states have call successors, (5384) [2023-12-20 01:02:14,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39026 states to 39026 states and 43516 transitions. [2023-12-20 01:02:14,766 INFO L78 Accepts]: Start accepts. Automaton has 39026 states and 43516 transitions. Word has length 326 [2023-12-20 01:02:14,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 01:02:14,767 INFO L495 AbstractCegarLoop]: Abstraction has 39026 states and 43516 transitions. [2023-12-20 01:02:14,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 13.5) internal successors, (216), 13 states have internal predecessors, (216), 4 states have call successors, (54), 4 states have call predecessors, (54), 9 states have return successors, (56), 7 states have call predecessors, (56), 4 states have call successors, (56) [2023-12-20 01:02:14,767 INFO L276 IsEmpty]: Start isEmpty. Operand 39026 states and 43516 transitions. [2023-12-20 01:02:14,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2023-12-20 01:02:14,796 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 01:02:14,796 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 10, 9, 9, 9, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:02:14,803 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2023-12-20 01:02:15,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable76 [2023-12-20 01:02:15,003 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 01:02:15,003 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 01:02:15,004 INFO L85 PathProgramCache]: Analyzing trace with hash 16153060, now seen corresponding path program 1 times [2023-12-20 01:02:15,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 01:02:15,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035585787] [2023-12-20 01:02:15,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:02:15,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 01:02:15,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:02:15,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-20 01:02:15,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:02:15,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-20 01:02:15,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:02:15,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-20 01:02:15,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:02:15,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-20 01:02:15,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:02:15,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-20 01:02:15,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:02:15,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-20 01:02:15,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:02:15,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-20 01:02:15,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:02:15,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-20 01:02:15,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:02:15,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-20 01:02:15,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:02:15,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-20 01:02:15,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:02:15,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-20 01:02:15,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:02:15,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-20 01:02:15,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:02:15,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-12-20 01:02:15,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:02:15,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2023-12-20 01:02:15,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:02:15,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2023-12-20 01:02:15,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:02:15,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2023-12-20 01:02:15,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:02:15,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2023-12-20 01:02:15,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:02:15,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2023-12-20 01:02:15,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:02:15,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2023-12-20 01:02:15,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:02:15,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2023-12-20 01:02:15,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:02:15,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2023-12-20 01:02:15,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:02:15,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2023-12-20 01:02:15,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:02:15,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2023-12-20 01:02:15,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:02:15,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2023-12-20 01:02:15,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:02:15,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2023-12-20 01:02:15,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:02:15,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2023-12-20 01:02:15,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:02:15,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2023-12-20 01:02:15,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:02:15,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2023-12-20 01:02:15,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:02:15,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2023-12-20 01:02:15,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:02:15,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2023-12-20 01:02:15,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:02:15,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2023-12-20 01:02:15,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:02:15,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2023-12-20 01:02:15,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:02:15,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2023-12-20 01:02:15,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:02:15,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2023-12-20 01:02:15,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:02:15,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2023-12-20 01:02:15,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:02:15,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2023-12-20 01:02:15,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:02:15,297 INFO L134 CoverageAnalysis]: Checked inductivity of 643 backedges. 81 proven. 23 refuted. 0 times theorem prover too weak. 539 trivial. 0 not checked. [2023-12-20 01:02:15,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 01:02:15,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035585787] [2023-12-20 01:02:15,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035585787] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 01:02:15,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1439004857] [2023-12-20 01:02:15,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 01:02:15,298 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 01:02:15,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 01:02:15,299 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 01:02:15,301 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2023-12-20 01:02:15,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 01:02:15,528 INFO L262 TraceCheckSpWp]: Trace formula consists of 1174 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-20 01:02:15,532 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 01:02:16,136 INFO L134 CoverageAnalysis]: Checked inductivity of 643 backedges. 124 proven. 428 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2023-12-20 01:02:16,136 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 01:02:16,543 INFO L134 CoverageAnalysis]: Checked inductivity of 643 backedges. 46 proven. 89 refuted. 0 times theorem prover too weak. 508 trivial. 0 not checked. [2023-12-20 01:02:16,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1439004857] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 01:02:16,543 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 01:02:16,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 14, 13] total 30 [2023-12-20 01:02:16,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907669884] [2023-12-20 01:02:16,543 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 01:02:16,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-12-20 01:02:16,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 01:02:16,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-12-20 01:02:16,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=791, Unknown=0, NotChecked=0, Total=870 [2023-12-20 01:02:16,545 INFO L87 Difference]: Start difference. First operand 39026 states and 43516 transitions. Second operand has 30 states, 28 states have (on average 15.035714285714286) internal successors, (421), 25 states have internal predecessors, (421), 11 states have call successors, (103), 6 states have call predecessors, (103), 10 states have return successors, (102), 14 states have call predecessors, (102), 11 states have call successors, (102) [2023-12-20 01:02:41,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 01:02:41,835 INFO L93 Difference]: Finished difference Result 94958 states and 105513 transitions. [2023-12-20 01:02:41,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 148 states. [2023-12-20 01:02:41,836 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 28 states have (on average 15.035714285714286) internal successors, (421), 25 states have internal predecessors, (421), 11 states have call successors, (103), 6 states have call predecessors, (103), 10 states have return successors, (102), 14 states have call predecessors, (102), 11 states have call successors, (102) Word has length 334 [2023-12-20 01:02:41,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 01:02:41,986 INFO L225 Difference]: With dead ends: 94958 [2023-12-20 01:02:41,986 INFO L226 Difference]: Without dead ends: 57473 [2023-12-20 01:02:42,037 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 934 GetRequests, 762 SyntacticMatches, 0 SemanticMatches, 172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9945 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=2590, Invalid=27512, Unknown=0, NotChecked=0, Total=30102 [2023-12-20 01:02:42,037 INFO L413 NwaCegarLoop]: 1158 mSDtfsCounter, 3785 mSDsluCounter, 15881 mSDsCounter, 0 mSdLazyCounter, 5135 mSolverCounterSat, 1301 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3785 SdHoareTripleChecker+Valid, 17039 SdHoareTripleChecker+Invalid, 6436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 1301 IncrementalHoareTripleChecker+Valid, 5135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-20 01:02:42,037 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3785 Valid, 17039 Invalid, 6436 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [1301 Valid, 5135 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-20 01:02:42,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57473 states. Received shutdown request... [2023-12-20 01:02:54,811 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-20 01:02:54,811 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-20 01:02:55,836 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2023-12-20 01:02:56,066 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forcibly destroying the process [2023-12-20 01:02:56,067 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 [2023-12-20 01:02:56,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57473 to 43491. [2023-12-20 01:02:56,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43491 states, 33011 states have (on average 1.099239647390264) internal successors, (36287), 33260 states have internal predecessors, (36287), 5980 states have call successors, (5980), 4499 states have call predecessors, (5980), 4499 states have return successors, (5980), 5731 states have call predecessors, (5980), 5980 states have call successors, (5980) [2023-12-20 01:02:56,546 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-20 01:02:56,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2023-12-20 01:02:56,547 WARN L619 AbstractCegarLoop]: Verification canceled: while ReachableStatesComputation was computing reachable states (1 states constructed, input type DoubleDeckerAutomaton). [2023-12-20 01:02:56,550 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 01:02:56,551 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-20 01:02:56,552 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.12 01:02:56 BoogieIcfgContainer [2023-12-20 01:02:56,552 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-20 01:02:56,552 INFO L158 Benchmark]: Toolchain (without parser) took 810612.39ms. Allocated memory was 332.4MB in the beginning and 6.4GB in the end (delta: 6.0GB). Free memory was 281.6MB in the beginning and 4.0GB in the end (delta: -3.7GB). Peak memory consumption was 5.5GB. Max. memory is 8.0GB. [2023-12-20 01:02:56,553 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 203.4MB. Free memory is still 153.6MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-20 01:02:56,553 INFO L158 Benchmark]: CACSL2BoogieTranslator took 318.08ms. Allocated memory is still 332.4MB. Free memory was 281.3MB in the beginning and 263.2MB in the end (delta: 18.1MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. [2023-12-20 01:02:56,553 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.33ms. Allocated memory is still 332.4MB. Free memory was 263.2MB in the beginning and 259.6MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-12-20 01:02:56,553 INFO L158 Benchmark]: Boogie Preprocessor took 38.78ms. Allocated memory is still 332.4MB. Free memory was 259.6MB in the beginning and 255.1MB in the end (delta: 4.5MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-12-20 01:02:56,553 INFO L158 Benchmark]: RCFGBuilder took 605.90ms. Allocated memory is still 332.4MB. Free memory was 255.1MB in the beginning and 266.5MB in the end (delta: -11.4MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-20 01:02:56,553 INFO L158 Benchmark]: TraceAbstraction took 809600.53ms. Allocated memory was 332.4MB in the beginning and 6.4GB in the end (delta: 6.0GB). Free memory was 266.0MB in the beginning and 4.0GB in the end (delta: -3.7GB). Peak memory consumption was 5.5GB. Max. memory is 8.0GB. [2023-12-20 01:02:56,553 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 203.4MB. Free memory is still 153.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 318.08ms. Allocated memory is still 332.4MB. Free memory was 281.3MB in the beginning and 263.2MB in the end (delta: 18.1MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 44.33ms. Allocated memory is still 332.4MB. Free memory was 263.2MB in the beginning and 259.6MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 38.78ms. Allocated memory is still 332.4MB. Free memory was 259.6MB in the beginning and 255.1MB in the end (delta: 4.5MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * RCFGBuilder took 605.90ms. Allocated memory is still 332.4MB. Free memory was 255.1MB in the beginning and 266.5MB in the end (delta: -11.4MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 809600.53ms. Allocated memory was 332.4MB in the beginning and 6.4GB in the end (delta: 6.0GB). Free memory was 266.0MB in the beginning and 4.0GB in the end (delta: -3.7GB). Peak memory consumption was 5.5GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 614]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 614). Cancelled while ReachableStatesComputation was computing reachable states (1 states constructed, input type DoubleDeckerAutomaton). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 163 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 809.6s, OverallIterations: 78, TraceHistogramMax: 11, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.5s, AutomataDifference: 421.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 68689 SdHoareTripleChecker+Valid, 50.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 68481 mSDsluCounter, 230692 SdHoareTripleChecker+Invalid, 42.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 200848 mSDsCounter, 20517 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 94468 IncrementalHoareTripleChecker+Invalid, 114985 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 20517 mSolverCounterUnsat, 29844 mSDtfsCounter, 94468 mSolverCounterSat, 1.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 24212 GetRequests, 21357 SyntacticMatches, 46 SemanticMatches, 2809 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74562 ImplicationChecksByTransitivity, 46.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=53143occurred in iteration=63, InterpolantAutomatonStates: 2249, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 309.0s AutomataMinimizationTime, 78 MinimizatonAttempts, 121065 StatesRemovedByMinimization, 66 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 2.1s SsaConstructionTime, 5.6s SatisfiabilityAnalysisTime, 58.3s InterpolantComputationTime, 22941 NumberOfCodeBlocks, 22941 NumberOfCodeBlocksAsserted, 119 NumberOfCheckSat, 31964 ConstructedInterpolants, 0 QuantifiedInterpolants, 145627 SizeOfPredicates, 183 NumberOfNonLiveVariables, 36607 ConjunctsInSsa, 1001 ConjunctsInUnsatCore, 159 InterpolantComputations, 39 PerfectInterpolantSequences, 30114/35788 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown