/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 false -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 [2023-12-21 11:23:42,924 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 11:23:42,996 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-21 11:23:43,000 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 11:23:43,001 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 11:23:43,024 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 11:23:43,025 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 11:23:43,025 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 11:23:43,025 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 11:23:43,029 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 11:23:43,029 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 11:23:43,029 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 11:23:43,030 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 11:23:43,031 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 11:23:43,031 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 11:23:43,031 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 11:23:43,031 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 11:23:43,032 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 11:23:43,032 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-21 11:23:43,032 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 11:23:43,032 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 11:23:43,032 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 11:23:43,032 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 11:23:43,033 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 11:23:43,033 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 11:23:43,033 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 11:23:43,033 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 11:23:43,033 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 11:23:43,034 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 11:23:43,034 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 11:23:43,035 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 11:23:43,035 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 11:23:43,035 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 11:23:43,035 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 11:23:43,035 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 11:23:43,035 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 11:23:43,035 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-21 11:23:43,035 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-21 11:23:43,036 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 11:23:43,036 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 11:23:43,036 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 11:23:43,036 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 11:23:43,036 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 11:23:43,036 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-21 11:23:43,198 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 11:23:43,212 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 11:23:43,213 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 11:23:43,214 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 11:23:43,215 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 11:23:43,215 INFO L431 ainManager$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 [2023-12-21 11:23:44,290 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 11:23:44,515 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 11:23:44,515 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_STARTPALS_ActiveStandby.5.ufo.UNBOUNDED.pals.c [2023-12-21 11:23:44,526 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c688608b/3db139975b054d44bd0ceeed90d303c6/FLAG31e383d62 [2023-12-21 11:23:44,537 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c688608b/3db139975b054d44bd0ceeed90d303c6 [2023-12-21 11:23:44,539 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 11:23:44,540 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 11:23:44,544 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 11:23:44,544 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 11:23:44,547 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 11:23:44,548 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 11:23:44" (1/1) ... [2023-12-21 11:23:44,548 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ada756 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:23:44, skipping insertion in model container [2023-12-21 11:23:44,548 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 11:23:44" (1/1) ... [2023-12-21 11:23:44,573 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 11:23:44,720 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] [2023-12-21 11:23:44,723 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 11:23:44,732 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 11:23:44,773 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] [2023-12-21 11:23:44,774 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 11:23:44,786 INFO L206 MainTranslator]: Completed translation [2023-12-21 11:23:44,786 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:23:44 WrapperNode [2023-12-21 11:23:44,787 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 11:23:44,787 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 11:23:44,788 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 11:23:44,788 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 11:23:44,793 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:23:44" (1/1) ... [2023-12-21 11:23:44,800 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:23:44" (1/1) ... [2023-12-21 11:23:44,826 INFO L138 Inliner]: procedures = 32, calls = 47, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 498 [2023-12-21 11:23:44,826 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 11:23:44,827 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 11:23:44,827 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 11:23:44,827 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 11:23:44,834 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:23:44" (1/1) ... [2023-12-21 11:23:44,835 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:23:44" (1/1) ... [2023-12-21 11:23:44,838 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:23:44" (1/1) ... [2023-12-21 11:23:44,860 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]. [2023-12-21 11:23:44,860 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:23:44" (1/1) ... [2023-12-21 11:23:44,860 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:23:44" (1/1) ... [2023-12-21 11:23:44,880 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:23:44" (1/1) ... [2023-12-21 11:23:44,884 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:23:44" (1/1) ... [2023-12-21 11:23:44,885 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:23:44" (1/1) ... [2023-12-21 11:23:44,887 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:23:44" (1/1) ... [2023-12-21 11:23:44,889 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 11:23:44,890 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 11:23:44,890 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 11:23:44,890 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 11:23:44,891 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:23:44" (1/1) ... [2023-12-21 11:23:44,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 11:23:44,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:23:44,923 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) [2023-12-21 11:23:44,929 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 [2023-12-21 11:23:44,946 INFO L130 BoogieDeclarations]: Found specification of procedure read_manual_selection_history [2023-12-21 11:23:44,946 INFO L138 BoogieDeclarations]: Found implementation of procedure read_manual_selection_history [2023-12-21 11:23:44,946 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 11:23:44,946 INFO L130 BoogieDeclarations]: Found specification of procedure read_side2_failed_history [2023-12-21 11:23:44,947 INFO L138 BoogieDeclarations]: Found implementation of procedure read_side2_failed_history [2023-12-21 11:23:44,947 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-12-21 11:23:44,947 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2023-12-21 11:23:44,948 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-21 11:23:44,948 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-21 11:23:44,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-21 11:23:44,948 INFO L130 BoogieDeclarations]: Found specification of procedure read_side1_failed_history [2023-12-21 11:23:44,948 INFO L138 BoogieDeclarations]: Found implementation of procedure read_side1_failed_history [2023-12-21 11:23:44,948 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 11:23:44,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 11:23:44,949 INFO L130 BoogieDeclarations]: Found specification of procedure read_active_side_history [2023-12-21 11:23:44,949 INFO L138 BoogieDeclarations]: Found implementation of procedure read_active_side_history [2023-12-21 11:23:45,050 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 11:23:45,052 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 11:23:45,450 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 11:23:45,512 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 11:23:45,513 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-21 11:23:45,513 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 11:23:45 BoogieIcfgContainer [2023-12-21 11:23:45,513 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 11:23:45,516 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 11:23:45,516 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 11:23:45,519 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 11:23:45,519 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 11:23:44" (1/3) ... [2023-12-21 11:23:45,521 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fbc36c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 11:23:45, skipping insertion in model container [2023-12-21 11:23:45,521 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:23:44" (2/3) ... [2023-12-21 11:23:45,521 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fbc36c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 11:23:45, skipping insertion in model container [2023-12-21 11:23:45,521 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 11:23:45" (3/3) ... [2023-12-21 11:23:45,522 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_STARTPALS_ActiveStandby.5.ufo.UNBOUNDED.pals.c [2023-12-21 11:23:45,536 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 11:23:45,537 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-21 11:23:45,580 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 11:23:45,585 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;@6d14de00, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 11:23:45,585 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-21 11:23:45,590 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) [2023-12-21 11:23:45,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-21 11:23:45,596 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:23:45,596 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] [2023-12-21 11:23:45,596 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:23:45,600 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:23:45,600 INFO L85 PathProgramCache]: Analyzing trace with hash 103658677, now seen corresponding path program 1 times [2023-12-21 11:23:45,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:23:45,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242399512] [2023-12-21 11:23:45,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:23:45,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:23:45,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:45,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 11:23:45,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:45,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:23:45,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:23:45,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242399512] [2023-12-21 11:23:45,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242399512] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:23:45,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:23:45,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 11:23:45,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229750254] [2023-12-21 11:23:45,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:23:45,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-21 11:23:45,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:23:45,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-21 11:23:45,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-21 11:23:45,837 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) [2023-12-21 11:23:45,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:23:45,913 INFO L93 Difference]: Finished difference Result 309 states and 522 transitions. [2023-12-21 11:23:45,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-21 11:23:45,917 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 [2023-12-21 11:23:45,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:23:45,927 INFO L225 Difference]: With dead ends: 309 [2023-12-21 11:23:45,927 INFO L226 Difference]: Without dead ends: 161 [2023-12-21 11:23:45,934 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 [2023-12-21 11:23:45,938 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 [2023-12-21 11:23:45,939 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] [2023-12-21 11:23:45,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2023-12-21 11:23:45,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2023-12-21 11:23:45,991 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) [2023-12-21 11:23:45,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 256 transitions. [2023-12-21 11:23:45,994 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 256 transitions. Word has length 23 [2023-12-21 11:23:45,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:23:45,994 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 256 transitions. [2023-12-21 11:23:45,994 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) [2023-12-21 11:23:45,994 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 256 transitions. [2023-12-21 11:23:45,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-21 11:23:45,996 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:23:45,996 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] [2023-12-21 11:23:45,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-21 11:23:45,996 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:23:45,997 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:23:45,997 INFO L85 PathProgramCache]: Analyzing trace with hash -1890486029, now seen corresponding path program 1 times [2023-12-21 11:23:45,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:23:45,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965760006] [2023-12-21 11:23:45,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:23:45,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:23:46,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:46,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 11:23:46,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:46,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:23:46,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:23:46,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965760006] [2023-12-21 11:23:46,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965760006] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:23:46,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:23:46,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 11:23:46,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419986228] [2023-12-21 11:23:46,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:23:46,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 11:23:46,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:23:46,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 11:23:46,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-21 11:23:46,173 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) [2023-12-21 11:23:46,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:23:46,281 INFO L93 Difference]: Finished difference Result 309 states and 487 transitions. [2023-12-21 11:23:46,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 11:23:46,282 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 [2023-12-21 11:23:46,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:23:46,284 INFO L225 Difference]: With dead ends: 309 [2023-12-21 11:23:46,284 INFO L226 Difference]: Without dead ends: 161 [2023-12-21 11:23:46,285 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 [2023-12-21 11:23:46,286 INFO L413 NwaCegarLoop]: 247 mSDtfsCounter, 130 mSDsluCounter, 820 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:23:46,287 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 1067 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:23:46,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2023-12-21 11:23:46,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2023-12-21 11:23:46,311 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) [2023-12-21 11:23:46,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 244 transitions. [2023-12-21 11:23:46,313 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 244 transitions. Word has length 23 [2023-12-21 11:23:46,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:23:46,313 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 244 transitions. [2023-12-21 11:23:46,313 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) [2023-12-21 11:23:46,314 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 244 transitions. [2023-12-21 11:23:46,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-21 11:23:46,315 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:23:46,315 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] [2023-12-21 11:23:46,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-21 11:23:46,316 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:23:46,317 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:23:46,317 INFO L85 PathProgramCache]: Analyzing trace with hash 2080134839, now seen corresponding path program 1 times [2023-12-21 11:23:46,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:23:46,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86933982] [2023-12-21 11:23:46,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:23:46,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:23:46,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:46,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:23:46,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:46,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 11:23:46,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:23:46,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86933982] [2023-12-21 11:23:46,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86933982] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:23:46,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:23:46,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 11:23:46,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36614637] [2023-12-21 11:23:46,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:23:46,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 11:23:46,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:23:46,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 11:23:46,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 11:23:46,534 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) [2023-12-21 11:23:46,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:23:46,594 INFO L93 Difference]: Finished difference Result 310 states and 479 transitions. [2023-12-21 11:23:46,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 11:23:46,595 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 [2023-12-21 11:23:46,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:23:46,596 INFO L225 Difference]: With dead ends: 310 [2023-12-21 11:23:46,596 INFO L226 Difference]: Without dead ends: 165 [2023-12-21 11:23:46,598 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 [2023-12-21 11:23:46,601 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 [2023-12-21 11:23:46,602 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] [2023-12-21 11:23:46,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2023-12-21 11:23:46,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2023-12-21 11:23:46,618 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) [2023-12-21 11:23:46,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 247 transitions. [2023-12-21 11:23:46,620 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 247 transitions. Word has length 34 [2023-12-21 11:23:46,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:23:46,620 INFO L495 AbstractCegarLoop]: Abstraction has 165 states and 247 transitions. [2023-12-21 11:23:46,620 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) [2023-12-21 11:23:46,620 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 247 transitions. [2023-12-21 11:23:46,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-12-21 11:23:46,626 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:23:46,626 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] [2023-12-21 11:23:46,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-21 11:23:46,627 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:23:46,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:23:46,627 INFO L85 PathProgramCache]: Analyzing trace with hash 2074468601, now seen corresponding path program 1 times [2023-12-21 11:23:46,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:23:46,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988116862] [2023-12-21 11:23:46,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:23:46,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:23:46,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:46,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:23:46,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:46,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-21 11:23:46,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:46,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-21 11:23:46,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:46,710 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 11:23:46,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:23:46,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988116862] [2023-12-21 11:23:46,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988116862] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:23:46,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:23:46,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 11:23:46,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568341311] [2023-12-21 11:23:46,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:23:46,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:23:46,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:23:46,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:23:46,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:23:46,712 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) [2023-12-21 11:23:46,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:23:46,760 INFO L93 Difference]: Finished difference Result 455 states and 692 transitions. [2023-12-21 11:23:46,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:23:46,761 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 [2023-12-21 11:23:46,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:23:46,765 INFO L225 Difference]: With dead ends: 455 [2023-12-21 11:23:46,765 INFO L226 Difference]: Without dead ends: 306 [2023-12-21 11:23:46,766 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 [2023-12-21 11:23:46,771 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 [2023-12-21 11:23:46,772 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] [2023-12-21 11:23:46,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2023-12-21 11:23:46,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 303. [2023-12-21 11:23:46,802 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) [2023-12-21 11:23:46,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 459 transitions. [2023-12-21 11:23:46,805 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 459 transitions. Word has length 48 [2023-12-21 11:23:46,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:23:46,805 INFO L495 AbstractCegarLoop]: Abstraction has 303 states and 459 transitions. [2023-12-21 11:23:46,805 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) [2023-12-21 11:23:46,806 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 459 transitions. [2023-12-21 11:23:46,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-12-21 11:23:46,807 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:23:46,807 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] [2023-12-21 11:23:46,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-21 11:23:46,807 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:23:46,808 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:23:46,808 INFO L85 PathProgramCache]: Analyzing trace with hash 1204065463, now seen corresponding path program 1 times [2023-12-21 11:23:46,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:23:46,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229796795] [2023-12-21 11:23:46,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:23:46,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:23:46,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:46,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:23:46,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:46,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-21 11:23:46,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:46,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-21 11:23:46,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:46,875 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 11:23:46,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:23:46,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229796795] [2023-12-21 11:23:46,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229796795] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:23:46,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:23:46,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 11:23:46,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111689064] [2023-12-21 11:23:46,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:23:46,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:23:46,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:23:46,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:23:46,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:23:46,877 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) [2023-12-21 11:23:46,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:23:46,956 INFO L93 Difference]: Finished difference Result 857 states and 1307 transitions. [2023-12-21 11:23:46,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:23:46,956 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 [2023-12-21 11:23:46,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:23:46,961 INFO L225 Difference]: With dead ends: 857 [2023-12-21 11:23:46,961 INFO L226 Difference]: Without dead ends: 570 [2023-12-21 11:23:46,962 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 [2023-12-21 11:23:46,963 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 [2023-12-21 11:23:46,963 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] [2023-12-21 11:23:46,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2023-12-21 11:23:47,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 558. [2023-12-21 11:23:47,002 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) [2023-12-21 11:23:47,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 847 transitions. [2023-12-21 11:23:47,006 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 847 transitions. Word has length 49 [2023-12-21 11:23:47,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:23:47,007 INFO L495 AbstractCegarLoop]: Abstraction has 558 states and 847 transitions. [2023-12-21 11:23:47,007 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) [2023-12-21 11:23:47,007 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 847 transitions. [2023-12-21 11:23:47,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-12-21 11:23:47,008 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:23:47,008 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] [2023-12-21 11:23:47,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-21 11:23:47,008 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:23:47,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:23:47,012 INFO L85 PathProgramCache]: Analyzing trace with hash -75798215, now seen corresponding path program 1 times [2023-12-21 11:23:47,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:23:47,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258085239] [2023-12-21 11:23:47,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:23:47,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:23:47,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:47,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:23:47,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:47,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-21 11:23:47,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:47,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-12-21 11:23:47,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:47,096 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 11:23:47,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:23:47,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258085239] [2023-12-21 11:23:47,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258085239] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:23:47,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:23:47,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 11:23:47,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535908662] [2023-12-21 11:23:47,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:23:47,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 11:23:47,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:23:47,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 11:23:47,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 11:23:47,098 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) [2023-12-21 11:23:47,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:23:47,214 INFO L93 Difference]: Finished difference Result 1178 states and 1793 transitions. [2023-12-21 11:23:47,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 11:23:47,215 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 [2023-12-21 11:23:47,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:23:47,219 INFO L225 Difference]: With dead ends: 1178 [2023-12-21 11:23:47,219 INFO L226 Difference]: Without dead ends: 636 [2023-12-21 11:23:47,220 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 [2023-12-21 11:23:47,221 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 [2023-12-21 11:23:47,221 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] [2023-12-21 11:23:47,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 636 states. [2023-12-21 11:23:47,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 636 to 628. [2023-12-21 11:23:47,253 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) [2023-12-21 11:23:47,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 943 transitions. [2023-12-21 11:23:47,256 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 943 transitions. Word has length 49 [2023-12-21 11:23:47,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:23:47,257 INFO L495 AbstractCegarLoop]: Abstraction has 628 states and 943 transitions. [2023-12-21 11:23:47,257 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) [2023-12-21 11:23:47,257 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 943 transitions. [2023-12-21 11:23:47,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-21 11:23:47,259 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:23:47,259 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] [2023-12-21 11:23:47,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-21 11:23:47,259 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:23:47,259 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:23:47,260 INFO L85 PathProgramCache]: Analyzing trace with hash -1717692240, now seen corresponding path program 1 times [2023-12-21 11:23:47,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:23:47,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640772328] [2023-12-21 11:23:47,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:23:47,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:23:47,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:47,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:23:47,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:47,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-21 11:23:47,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:47,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 11:23:47,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:47,341 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 11:23:47,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:23:47,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640772328] [2023-12-21 11:23:47,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640772328] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:23:47,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:23:47,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 11:23:47,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503842597] [2023-12-21 11:23:47,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:23:47,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 11:23:47,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:23:47,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 11:23:47,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 11:23:47,343 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) [2023-12-21 11:23:47,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:23:47,462 INFO L93 Difference]: Finished difference Result 1182 states and 1793 transitions. [2023-12-21 11:23:47,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 11:23:47,463 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 [2023-12-21 11:23:47,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:23:47,466 INFO L225 Difference]: With dead ends: 1182 [2023-12-21 11:23:47,466 INFO L226 Difference]: Without dead ends: 640 [2023-12-21 11:23:47,467 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 [2023-12-21 11:23:47,468 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 [2023-12-21 11:23:47,468 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] [2023-12-21 11:23:47,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 640 states. [2023-12-21 11:23:47,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 640 to 636. [2023-12-21 11:23:47,536 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) [2023-12-21 11:23:47,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 636 states to 636 states and 951 transitions. [2023-12-21 11:23:47,539 INFO L78 Accepts]: Start accepts. Automaton has 636 states and 951 transitions. Word has length 50 [2023-12-21 11:23:47,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:23:47,540 INFO L495 AbstractCegarLoop]: Abstraction has 636 states and 951 transitions. [2023-12-21 11:23:47,541 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) [2023-12-21 11:23:47,541 INFO L276 IsEmpty]: Start isEmpty. Operand 636 states and 951 transitions. [2023-12-21 11:23:47,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-12-21 11:23:47,541 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:23:47,541 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] [2023-12-21 11:23:47,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-21 11:23:47,542 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:23:47,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:23:47,542 INFO L85 PathProgramCache]: Analyzing trace with hash 1754746402, now seen corresponding path program 1 times [2023-12-21 11:23:47,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:23:47,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232144746] [2023-12-21 11:23:47,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:23:47,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:23:47,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:47,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:23:47,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:47,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-21 11:23:47,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:47,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 11:23:47,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:47,672 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 11:23:47,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:23:47,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232144746] [2023-12-21 11:23:47,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232144746] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:23:47,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:23:47,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 11:23:47,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749094763] [2023-12-21 11:23:47,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:23:47,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 11:23:47,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:23:47,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 11:23:47,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 11:23:47,673 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) [2023-12-21 11:23:47,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:23:47,782 INFO L93 Difference]: Finished difference Result 1182 states and 1785 transitions. [2023-12-21 11:23:47,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 11:23:47,783 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 [2023-12-21 11:23:47,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:23:47,786 INFO L225 Difference]: With dead ends: 1182 [2023-12-21 11:23:47,786 INFO L226 Difference]: Without dead ends: 640 [2023-12-21 11:23:47,788 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 [2023-12-21 11:23:47,789 INFO L413 NwaCegarLoop]: 210 mSDtfsCounter, 52 mSDsluCounter, 405 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 [2023-12-21 11:23:47,789 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] [2023-12-21 11:23:47,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 640 states. [2023-12-21 11:23:47,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 640 to 636. [2023-12-21 11:23:47,821 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) [2023-12-21 11:23:47,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 636 states to 636 states and 947 transitions. [2023-12-21 11:23:47,824 INFO L78 Accepts]: Start accepts. Automaton has 636 states and 947 transitions. Word has length 52 [2023-12-21 11:23:47,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:23:47,824 INFO L495 AbstractCegarLoop]: Abstraction has 636 states and 947 transitions. [2023-12-21 11:23:47,824 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) [2023-12-21 11:23:47,824 INFO L276 IsEmpty]: Start isEmpty. Operand 636 states and 947 transitions. [2023-12-21 11:23:47,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-21 11:23:47,825 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:23:47,825 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] [2023-12-21 11:23:47,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-21 11:23:47,825 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:23:47,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:23:47,826 INFO L85 PathProgramCache]: Analyzing trace with hash -1411355129, now seen corresponding path program 1 times [2023-12-21 11:23:47,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:23:47,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183794785] [2023-12-21 11:23:47,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:23:47,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:23:47,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:47,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:23:47,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:47,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-21 11:23:47,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:47,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-12-21 11:23:47,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:47,930 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 11:23:47,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:23:47,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183794785] [2023-12-21 11:23:47,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183794785] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:23:47,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:23:47,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 11:23:47,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233082436] [2023-12-21 11:23:47,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:23:47,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 11:23:47,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:23:47,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 11:23:47,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 11:23:47,931 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) [2023-12-21 11:23:47,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:23:47,994 INFO L93 Difference]: Finished difference Result 1198 states and 1805 transitions. [2023-12-21 11:23:47,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 11:23:47,994 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 [2023-12-21 11:23:47,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:23:47,998 INFO L225 Difference]: With dead ends: 1198 [2023-12-21 11:23:47,998 INFO L226 Difference]: Without dead ends: 656 [2023-12-21 11:23:47,999 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 [2023-12-21 11:23:48,002 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 [2023-12-21 11:23:48,002 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] [2023-12-21 11:23:48,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 656 states. [2023-12-21 11:23:48,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 656 to 656. [2023-12-21 11:23:48,031 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) [2023-12-21 11:23:48,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 656 states to 656 states and 963 transitions. [2023-12-21 11:23:48,034 INFO L78 Accepts]: Start accepts. Automaton has 656 states and 963 transitions. Word has length 53 [2023-12-21 11:23:48,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:23:48,034 INFO L495 AbstractCegarLoop]: Abstraction has 656 states and 963 transitions. [2023-12-21 11:23:48,034 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) [2023-12-21 11:23:48,034 INFO L276 IsEmpty]: Start isEmpty. Operand 656 states and 963 transitions. [2023-12-21 11:23:48,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-21 11:23:48,035 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:23:48,035 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] [2023-12-21 11:23:48,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-21 11:23:48,035 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:23:48,035 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:23:48,035 INFO L85 PathProgramCache]: Analyzing trace with hash 1026075629, now seen corresponding path program 1 times [2023-12-21 11:23:48,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:23:48,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551003691] [2023-12-21 11:23:48,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:23:48,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:23:48,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:48,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:23:48,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:48,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-21 11:23:48,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:48,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-12-21 11:23:48,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:48,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 11:23:48,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:48,219 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 11:23:48,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:23:48,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551003691] [2023-12-21 11:23:48,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551003691] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:23:48,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:23:48,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 11:23:48,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458058057] [2023-12-21 11:23:48,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:23:48,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 11:23:48,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:23:48,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 11:23:48,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 11:23:48,221 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) [2023-12-21 11:23:48,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:23:48,283 INFO L93 Difference]: Finished difference Result 1238 states and 1849 transitions. [2023-12-21 11:23:48,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 11:23:48,283 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 [2023-12-21 11:23:48,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:23:48,286 INFO L225 Difference]: With dead ends: 1238 [2023-12-21 11:23:48,286 INFO L226 Difference]: Without dead ends: 676 [2023-12-21 11:23:48,289 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 [2023-12-21 11:23:48,290 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 [2023-12-21 11:23:48,290 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] [2023-12-21 11:23:48,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 676 states. [2023-12-21 11:23:48,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 676 to 676. [2023-12-21 11:23:48,318 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) [2023-12-21 11:23:48,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 676 states to 676 states and 979 transitions. [2023-12-21 11:23:48,321 INFO L78 Accepts]: Start accepts. Automaton has 676 states and 979 transitions. Word has length 61 [2023-12-21 11:23:48,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:23:48,322 INFO L495 AbstractCegarLoop]: Abstraction has 676 states and 979 transitions. [2023-12-21 11:23:48,322 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) [2023-12-21 11:23:48,322 INFO L276 IsEmpty]: Start isEmpty. Operand 676 states and 979 transitions. [2023-12-21 11:23:48,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-12-21 11:23:48,323 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:23:48,323 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] [2023-12-21 11:23:48,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-21 11:23:48,323 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:23:48,324 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:23:48,324 INFO L85 PathProgramCache]: Analyzing trace with hash 1366026871, now seen corresponding path program 1 times [2023-12-21 11:23:48,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:23:48,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679767961] [2023-12-21 11:23:48,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:23:48,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:23:48,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:48,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:23:48,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:48,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-21 11:23:48,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:48,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-12-21 11:23:48,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:48,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 11:23:48,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:48,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-21 11:23:48,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:48,427 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 11:23:48,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:23:48,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679767961] [2023-12-21 11:23:48,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679767961] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:23:48,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:23:48,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 11:23:48,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574907359] [2023-12-21 11:23:48,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:23:48,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 11:23:48,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:23:48,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 11:23:48,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 11:23:48,430 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) [2023-12-21 11:23:48,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:23:48,489 INFO L93 Difference]: Finished difference Result 1274 states and 1865 transitions. [2023-12-21 11:23:48,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 11:23:48,489 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 [2023-12-21 11:23:48,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:23:48,492 INFO L225 Difference]: With dead ends: 1274 [2023-12-21 11:23:48,492 INFO L226 Difference]: Without dead ends: 692 [2023-12-21 11:23:48,493 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 [2023-12-21 11:23:48,494 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 [2023-12-21 11:23:48,494 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] [2023-12-21 11:23:48,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 692 states. [2023-12-21 11:23:48,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 692 to 692. [2023-12-21 11:23:48,523 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) [2023-12-21 11:23:48,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 991 transitions. [2023-12-21 11:23:48,526 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 991 transitions. Word has length 69 [2023-12-21 11:23:48,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:23:48,526 INFO L495 AbstractCegarLoop]: Abstraction has 692 states and 991 transitions. [2023-12-21 11:23:48,526 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) [2023-12-21 11:23:48,526 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 991 transitions. [2023-12-21 11:23:48,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-12-21 11:23:48,527 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:23:48,527 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] [2023-12-21 11:23:48,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-21 11:23:48,528 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:23:48,528 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:23:48,528 INFO L85 PathProgramCache]: Analyzing trace with hash -532481122, now seen corresponding path program 1 times [2023-12-21 11:23:48,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:23:48,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026436763] [2023-12-21 11:23:48,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:23:48,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:23:48,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:48,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:23:48,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:48,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-21 11:23:48,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:48,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-12-21 11:23:48,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:48,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 11:23:48,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:48,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-21 11:23:48,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:48,655 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 11:23:48,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:23:48,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026436763] [2023-12-21 11:23:48,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026436763] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:23:48,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:23:48,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 11:23:48,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597151247] [2023-12-21 11:23:48,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:23:48,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 11:23:48,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:23:48,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 11:23:48,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 11:23:48,657 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) [2023-12-21 11:23:48,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:23:48,728 INFO L93 Difference]: Finished difference Result 1310 states and 1905 transitions. [2023-12-21 11:23:48,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 11:23:48,729 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 [2023-12-21 11:23:48,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:23:48,731 INFO L225 Difference]: With dead ends: 1310 [2023-12-21 11:23:48,731 INFO L226 Difference]: Without dead ends: 712 [2023-12-21 11:23:48,733 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 [2023-12-21 11:23:48,734 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 [2023-12-21 11:23:48,734 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] [2023-12-21 11:23:48,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 712 states. [2023-12-21 11:23:48,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 712 to 712. [2023-12-21 11:23:48,767 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) [2023-12-21 11:23:48,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 712 states to 712 states and 1007 transitions. [2023-12-21 11:23:48,770 INFO L78 Accepts]: Start accepts. Automaton has 712 states and 1007 transitions. Word has length 69 [2023-12-21 11:23:48,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:23:48,770 INFO L495 AbstractCegarLoop]: Abstraction has 712 states and 1007 transitions. [2023-12-21 11:23:48,770 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) [2023-12-21 11:23:48,770 INFO L276 IsEmpty]: Start isEmpty. Operand 712 states and 1007 transitions. [2023-12-21 11:23:48,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-21 11:23:48,772 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:23:48,772 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] [2023-12-21 11:23:48,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-21 11:23:48,772 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:23:48,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:23:48,773 INFO L85 PathProgramCache]: Analyzing trace with hash -109947134, now seen corresponding path program 1 times [2023-12-21 11:23:48,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:23:48,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163089778] [2023-12-21 11:23:48,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:23:48,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:23:48,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:48,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:23:48,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:48,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-21 11:23:48,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:48,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-12-21 11:23:48,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:48,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 11:23:48,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:48,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-21 11:23:48,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:48,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-12-21 11:23:48,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:48,884 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-21 11:23:48,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:23:48,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163089778] [2023-12-21 11:23:48,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163089778] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:23:48,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:23:48,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 11:23:48,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113849673] [2023-12-21 11:23:48,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:23:48,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 11:23:48,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:23:48,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 11:23:48,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 11:23:48,885 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) [2023-12-21 11:23:48,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:23:48,940 INFO L93 Difference]: Finished difference Result 1354 states and 1933 transitions. [2023-12-21 11:23:48,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 11:23:48,940 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 [2023-12-21 11:23:48,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:23:48,943 INFO L225 Difference]: With dead ends: 1354 [2023-12-21 11:23:48,943 INFO L226 Difference]: Without dead ends: 736 [2023-12-21 11:23:48,944 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 [2023-12-21 11:23:48,945 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 [2023-12-21 11:23:48,945 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] [2023-12-21 11:23:48,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 736 states. [2023-12-21 11:23:48,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 736 to 736. [2023-12-21 11:23:48,971 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) [2023-12-21 11:23:48,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 736 states to 736 states and 1027 transitions. [2023-12-21 11:23:48,974 INFO L78 Accepts]: Start accepts. Automaton has 736 states and 1027 transitions. Word has length 77 [2023-12-21 11:23:48,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:23:48,974 INFO L495 AbstractCegarLoop]: Abstraction has 736 states and 1027 transitions. [2023-12-21 11:23:48,974 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) [2023-12-21 11:23:48,974 INFO L276 IsEmpty]: Start isEmpty. Operand 736 states and 1027 transitions. [2023-12-21 11:23:48,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-21 11:23:48,975 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:23:48,975 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] [2023-12-21 11:23:48,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-21 11:23:48,976 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:23:48,976 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:23:48,976 INFO L85 PathProgramCache]: Analyzing trace with hash 1880226315, now seen corresponding path program 1 times [2023-12-21 11:23:48,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:23:48,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505284467] [2023-12-21 11:23:48,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:23:48,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:23:49,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:49,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:23:49,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:49,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-21 11:23:49,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:49,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-12-21 11:23:49,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:49,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 11:23:49,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:49,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-21 11:23:49,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:49,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-12-21 11:23:49,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:49,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 11:23:49,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:49,162 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-21 11:23:49,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:23:49,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505284467] [2023-12-21 11:23:49,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505284467] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:23:49,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:23:49,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 11:23:49,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241324748] [2023-12-21 11:23:49,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:23:49,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 11:23:49,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:23:49,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 11:23:49,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:23:49,164 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) [2023-12-21 11:23:49,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:23:49,380 INFO L93 Difference]: Finished difference Result 2083 states and 2923 transitions. [2023-12-21 11:23:49,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-21 11:23:49,381 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 [2023-12-21 11:23:49,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:23:49,387 INFO L225 Difference]: With dead ends: 2083 [2023-12-21 11:23:49,387 INFO L226 Difference]: Without dead ends: 1441 [2023-12-21 11:23:49,388 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 [2023-12-21 11:23:49,389 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 [2023-12-21 11:23:49,389 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] [2023-12-21 11:23:49,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1441 states. [2023-12-21 11:23:49,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1441 to 881. [2023-12-21 11:23:49,437 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) [2023-12-21 11:23:49,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 881 states to 881 states and 1220 transitions. [2023-12-21 11:23:49,445 INFO L78 Accepts]: Start accepts. Automaton has 881 states and 1220 transitions. Word has length 80 [2023-12-21 11:23:49,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:23:49,446 INFO L495 AbstractCegarLoop]: Abstraction has 881 states and 1220 transitions. [2023-12-21 11:23:49,446 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) [2023-12-21 11:23:49,446 INFO L276 IsEmpty]: Start isEmpty. Operand 881 states and 1220 transitions. [2023-12-21 11:23:49,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-12-21 11:23:49,447 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:23:49,447 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] [2023-12-21 11:23:49,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-21 11:23:49,447 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:23:49,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:23:49,448 INFO L85 PathProgramCache]: Analyzing trace with hash 392030714, now seen corresponding path program 1 times [2023-12-21 11:23:49,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:23:49,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790356062] [2023-12-21 11:23:49,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:23:49,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:23:49,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:49,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:23:49,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:49,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-21 11:23:49,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:49,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-12-21 11:23:49,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:49,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 11:23:49,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:49,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-21 11:23:49,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:49,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-12-21 11:23:49,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:49,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-12-21 11:23:49,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:49,539 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-21 11:23:49,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:23:49,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790356062] [2023-12-21 11:23:49,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790356062] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:23:49,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:23:49,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 11:23:49,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548735258] [2023-12-21 11:23:49,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:23:49,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 11:23:49,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:23:49,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 11:23:49,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 11:23:49,541 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) [2023-12-21 11:23:49,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:23:49,606 INFO L93 Difference]: Finished difference Result 1651 states and 2305 transitions. [2023-12-21 11:23:49,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 11:23:49,606 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 [2023-12-21 11:23:49,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:23:49,610 INFO L225 Difference]: With dead ends: 1651 [2023-12-21 11:23:49,610 INFO L226 Difference]: Without dead ends: 901 [2023-12-21 11:23:49,612 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 [2023-12-21 11:23:49,612 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 [2023-12-21 11:23:49,613 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] [2023-12-21 11:23:49,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 901 states. [2023-12-21 11:23:49,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 901 to 901. [2023-12-21 11:23:49,655 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) [2023-12-21 11:23:49,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 901 states to 901 states and 1235 transitions. [2023-12-21 11:23:49,657 INFO L78 Accepts]: Start accepts. Automaton has 901 states and 1235 transitions. Word has length 84 [2023-12-21 11:23:49,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:23:49,658 INFO L495 AbstractCegarLoop]: Abstraction has 901 states and 1235 transitions. [2023-12-21 11:23:49,658 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) [2023-12-21 11:23:49,658 INFO L276 IsEmpty]: Start isEmpty. Operand 901 states and 1235 transitions. [2023-12-21 11:23:49,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-12-21 11:23:49,658 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:23:49,658 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] [2023-12-21 11:23:49,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-21 11:23:49,659 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:23:49,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:23:49,659 INFO L85 PathProgramCache]: Analyzing trace with hash -954874953, now seen corresponding path program 1 times [2023-12-21 11:23:49,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:23:49,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893805518] [2023-12-21 11:23:49,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:23:49,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:23:49,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:49,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:23:49,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:49,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-21 11:23:49,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:49,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-12-21 11:23:49,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:49,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 11:23:49,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:49,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-21 11:23:49,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:49,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-12-21 11:23:49,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:49,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 11:23:49,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:49,822 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-12-21 11:23:49,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:23:49,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893805518] [2023-12-21 11:23:49,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893805518] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:23:49,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:23:49,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 11:23:49,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519577420] [2023-12-21 11:23:49,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:23:49,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 11:23:49,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:23:49,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 11:23:49,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-21 11:23:49,824 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) [2023-12-21 11:23:49,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:23:49,932 INFO L93 Difference]: Finished difference Result 1297 states and 1880 transitions. [2023-12-21 11:23:49,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 11:23:49,933 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 [2023-12-21 11:23:49,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:23:49,937 INFO L225 Difference]: With dead ends: 1297 [2023-12-21 11:23:49,937 INFO L226 Difference]: Without dead ends: 1295 [2023-12-21 11:23:49,938 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 [2023-12-21 11:23:49,938 INFO L413 NwaCegarLoop]: 410 mSDtfsCounter, 179 mSDsluCounter, 1416 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:23:49,938 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 1826 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:23:49,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1295 states. [2023-12-21 11:23:49,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1295 to 903. [2023-12-21 11:23:49,989 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) [2023-12-21 11:23:49,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 903 states to 903 states and 1237 transitions. [2023-12-21 11:23:49,992 INFO L78 Accepts]: Start accepts. Automaton has 903 states and 1237 transitions. Word has length 83 [2023-12-21 11:23:49,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:23:49,992 INFO L495 AbstractCegarLoop]: Abstraction has 903 states and 1237 transitions. [2023-12-21 11:23:49,993 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) [2023-12-21 11:23:49,993 INFO L276 IsEmpty]: Start isEmpty. Operand 903 states and 1237 transitions. [2023-12-21 11:23:49,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-21 11:23:49,993 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:23:49,993 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] [2023-12-21 11:23:49,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-21 11:23:49,994 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:23:49,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:23:49,994 INFO L85 PathProgramCache]: Analyzing trace with hash -2029276846, now seen corresponding path program 1 times [2023-12-21 11:23:49,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:23:49,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951181103] [2023-12-21 11:23:49,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:23:49,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:23:50,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:50,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:23:50,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:50,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-21 11:23:50,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:50,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-12-21 11:23:50,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:50,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 11:23:50,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:50,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-21 11:23:50,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:50,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-12-21 11:23:50,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:50,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 11:23:50,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:50,084 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-21 11:23:50,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:23:50,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951181103] [2023-12-21 11:23:50,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951181103] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:23:50,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:23:50,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 11:23:50,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671148245] [2023-12-21 11:23:50,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:23:50,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 11:23:50,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:23:50,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 11:23:50,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:23:50,086 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) [2023-12-21 11:23:50,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:23:50,214 INFO L93 Difference]: Finished difference Result 1689 states and 2330 transitions. [2023-12-21 11:23:50,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-21 11:23:50,214 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 [2023-12-21 11:23:50,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:23:50,218 INFO L225 Difference]: With dead ends: 1689 [2023-12-21 11:23:50,239 INFO L226 Difference]: Without dead ends: 958 [2023-12-21 11:23:50,240 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 [2023-12-21 11:23:50,241 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 [2023-12-21 11:23:50,241 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] [2023-12-21 11:23:50,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 958 states. [2023-12-21 11:23:50,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 958 to 914. [2023-12-21 11:23:50,283 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) [2023-12-21 11:23:50,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 914 states to 914 states and 1246 transitions. [2023-12-21 11:23:50,286 INFO L78 Accepts]: Start accepts. Automaton has 914 states and 1246 transitions. Word has length 86 [2023-12-21 11:23:50,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:23:50,286 INFO L495 AbstractCegarLoop]: Abstraction has 914 states and 1246 transitions. [2023-12-21 11:23:50,286 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) [2023-12-21 11:23:50,286 INFO L276 IsEmpty]: Start isEmpty. Operand 914 states and 1246 transitions. [2023-12-21 11:23:50,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-21 11:23:50,287 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:23:50,287 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] [2023-12-21 11:23:50,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-21 11:23:50,287 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:23:50,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:23:50,287 INFO L85 PathProgramCache]: Analyzing trace with hash -847343983, now seen corresponding path program 1 times [2023-12-21 11:23:50,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:23:50,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137958735] [2023-12-21 11:23:50,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:23:50,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:23:50,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:50,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:23:50,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:50,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-21 11:23:50,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:50,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-12-21 11:23:50,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:50,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 11:23:50,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:50,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-21 11:23:50,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:50,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-12-21 11:23:50,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:50,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 11:23:50,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:50,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-21 11:23:50,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:50,446 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-12-21 11:23:50,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:23:50,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137958735] [2023-12-21 11:23:50,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137958735] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:23:50,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:23:50,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 11:23:50,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229378026] [2023-12-21 11:23:50,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:23:50,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 11:23:50,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:23:50,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 11:23:50,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:23:50,448 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) [2023-12-21 11:23:50,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:23:50,595 INFO L93 Difference]: Finished difference Result 1760 states and 2434 transitions. [2023-12-21 11:23:50,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-21 11:23:50,596 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 [2023-12-21 11:23:50,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:23:50,599 INFO L225 Difference]: With dead ends: 1760 [2023-12-21 11:23:50,599 INFO L226 Difference]: Without dead ends: 1008 [2023-12-21 11:23:50,601 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 [2023-12-21 11:23:50,601 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 [2023-12-21 11:23:50,601 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] [2023-12-21 11:23:50,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1008 states. [2023-12-21 11:23:50,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1008 to 903. [2023-12-21 11:23:50,651 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) [2023-12-21 11:23:50,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 903 states to 903 states and 1230 transitions. [2023-12-21 11:23:50,654 INFO L78 Accepts]: Start accepts. Automaton has 903 states and 1230 transitions. Word has length 88 [2023-12-21 11:23:50,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:23:50,654 INFO L495 AbstractCegarLoop]: Abstraction has 903 states and 1230 transitions. [2023-12-21 11:23:50,655 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) [2023-12-21 11:23:50,655 INFO L276 IsEmpty]: Start isEmpty. Operand 903 states and 1230 transitions. [2023-12-21 11:23:50,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-12-21 11:23:50,655 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:23:50,655 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] [2023-12-21 11:23:50,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-21 11:23:50,656 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:23:50,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:23:50,656 INFO L85 PathProgramCache]: Analyzing trace with hash -1883504194, now seen corresponding path program 1 times [2023-12-21 11:23:50,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:23:50,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399493209] [2023-12-21 11:23:50,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:23:50,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:23:50,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:50,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:23:50,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:50,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-21 11:23:50,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:50,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-12-21 11:23:50,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:50,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 11:23:50,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:50,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-21 11:23:50,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:50,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-12-21 11:23:50,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:50,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-12-21 11:23:50,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:50,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-12-21 11:23:50,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:50,878 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-21 11:23:50,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:23:50,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399493209] [2023-12-21 11:23:50,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399493209] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:23:50,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:23:50,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 11:23:50,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806794854] [2023-12-21 11:23:50,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:23:50,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 11:23:50,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:23:50,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 11:23:50,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-12-21 11:23:50,880 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) [2023-12-21 11:23:51,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:23:51,378 INFO L93 Difference]: Finished difference Result 1952 states and 2700 transitions. [2023-12-21 11:23:51,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 11:23:51,378 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 [2023-12-21 11:23:51,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:23:51,383 INFO L225 Difference]: With dead ends: 1952 [2023-12-21 11:23:51,383 INFO L226 Difference]: Without dead ends: 1180 [2023-12-21 11:23:51,384 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2023-12-21 11:23:51,385 INFO L413 NwaCegarLoop]: 313 mSDtfsCounter, 612 mSDsluCounter, 1050 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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 [2023-12-21 11:23:51,385 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] [2023-12-21 11:23:51,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1180 states. [2023-12-21 11:23:51,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1180 to 919. [2023-12-21 11:23:51,480 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) [2023-12-21 11:23:51,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 919 states to 919 states and 1229 transitions. [2023-12-21 11:23:51,484 INFO L78 Accepts]: Start accepts. Automaton has 919 states and 1229 transitions. Word has length 89 [2023-12-21 11:23:51,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:23:51,484 INFO L495 AbstractCegarLoop]: Abstraction has 919 states and 1229 transitions. [2023-12-21 11:23:51,485 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) [2023-12-21 11:23:51,485 INFO L276 IsEmpty]: Start isEmpty. Operand 919 states and 1229 transitions. [2023-12-21 11:23:51,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-12-21 11:23:51,486 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:23:51,486 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] [2023-12-21 11:23:51,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-21 11:23:51,486 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:23:51,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:23:51,487 INFO L85 PathProgramCache]: Analyzing trace with hash 54876287, now seen corresponding path program 1 times [2023-12-21 11:23:51,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:23:51,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576401773] [2023-12-21 11:23:51,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:23:51,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:23:51,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:51,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:23:51,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:51,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-21 11:23:51,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:51,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-21 11:23:51,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:51,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-21 11:23:51,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:51,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-21 11:23:51,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:51,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-21 11:23:51,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:51,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 11:23:51,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:51,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-21 11:23:51,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:51,569 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-21 11:23:51,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:23:51,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576401773] [2023-12-21 11:23:51,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576401773] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:23:51,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:23:51,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 11:23:51,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465151779] [2023-12-21 11:23:51,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:23:51,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 11:23:51,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:23:51,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 11:23:51,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 11:23:51,571 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) [2023-12-21 11:23:51,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:23:51,775 INFO L93 Difference]: Finished difference Result 2448 states and 3287 transitions. [2023-12-21 11:23:51,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 11:23:51,775 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 [2023-12-21 11:23:51,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:23:51,780 INFO L225 Difference]: With dead ends: 2448 [2023-12-21 11:23:51,780 INFO L226 Difference]: Without dead ends: 1711 [2023-12-21 11:23:51,782 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 [2023-12-21 11:23:51,782 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 [2023-12-21 11:23:51,782 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] [2023-12-21 11:23:51,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1711 states. [2023-12-21 11:23:51,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1711 to 1486. [2023-12-21 11:23:51,874 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) [2023-12-21 11:23:51,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1486 states to 1486 states and 1981 transitions. [2023-12-21 11:23:51,878 INFO L78 Accepts]: Start accepts. Automaton has 1486 states and 1981 transitions. Word has length 90 [2023-12-21 11:23:51,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:23:51,878 INFO L495 AbstractCegarLoop]: Abstraction has 1486 states and 1981 transitions. [2023-12-21 11:23:51,878 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) [2023-12-21 11:23:51,879 INFO L276 IsEmpty]: Start isEmpty. Operand 1486 states and 1981 transitions. [2023-12-21 11:23:51,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-21 11:23:51,879 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:23:51,880 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] [2023-12-21 11:23:51,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-21 11:23:51,880 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:23:51,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:23:51,880 INFO L85 PathProgramCache]: Analyzing trace with hash 1960441268, now seen corresponding path program 1 times [2023-12-21 11:23:51,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:23:51,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142199991] [2023-12-21 11:23:51,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:23:51,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:23:51,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:52,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:23:52,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:52,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-21 11:23:52,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:52,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-21 11:23:52,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:52,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-21 11:23:52,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:52,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-21 11:23:52,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:52,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-21 11:23:52,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:52,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 11:23:52,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:52,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-21 11:23:52,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:52,038 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-21 11:23:52,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:23:52,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142199991] [2023-12-21 11:23:52,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142199991] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:23:52,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:23:52,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 11:23:52,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847344389] [2023-12-21 11:23:52,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:23:52,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 11:23:52,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:23:52,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 11:23:52,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:23:52,040 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) [2023-12-21 11:23:52,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:23:52,568 INFO L93 Difference]: Finished difference Result 3286 states and 4435 transitions. [2023-12-21 11:23:52,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 11:23:52,569 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 [2023-12-21 11:23:52,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:23:52,576 INFO L225 Difference]: With dead ends: 3286 [2023-12-21 11:23:52,576 INFO L226 Difference]: Without dead ends: 2054 [2023-12-21 11:23:52,578 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2023-12-21 11:23:52,578 INFO L413 NwaCegarLoop]: 334 mSDtfsCounter, 558 mSDsluCounter, 1141 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 11:23:52,579 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [561 Valid, 1475 Invalid, 441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 299 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 11:23:52,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2054 states. [2023-12-21 11:23:52,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2054 to 1513. [2023-12-21 11:23:52,687 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) [2023-12-21 11:23:52,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1513 states to 1513 states and 2007 transitions. [2023-12-21 11:23:52,691 INFO L78 Accepts]: Start accepts. Automaton has 1513 states and 2007 transitions. Word has length 92 [2023-12-21 11:23:52,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:23:52,691 INFO L495 AbstractCegarLoop]: Abstraction has 1513 states and 2007 transitions. [2023-12-21 11:23:52,691 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) [2023-12-21 11:23:52,691 INFO L276 IsEmpty]: Start isEmpty. Operand 1513 states and 2007 transitions. [2023-12-21 11:23:52,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-21 11:23:52,692 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:23:52,692 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] [2023-12-21 11:23:52,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-21 11:23:52,692 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:23:52,693 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:23:52,693 INFO L85 PathProgramCache]: Analyzing trace with hash -1350470272, now seen corresponding path program 1 times [2023-12-21 11:23:52,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:23:52,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494951924] [2023-12-21 11:23:52,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:23:52,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:23:52,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:52,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:23:52,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:52,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-21 11:23:52,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:52,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-21 11:23:52,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:52,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-12-21 11:23:52,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:52,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-21 11:23:52,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:52,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-21 11:23:52,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:52,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-21 11:23:52,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:52,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-21 11:23:52,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:52,756 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-21 11:23:52,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:23:52,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494951924] [2023-12-21 11:23:52,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494951924] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:23:52,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:23:52,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 11:23:52,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683608648] [2023-12-21 11:23:52,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:23:52,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 11:23:52,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:23:52,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 11:23:52,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 11:23:52,758 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) [2023-12-21 11:23:53,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:23:53,015 INFO L93 Difference]: Finished difference Result 3787 states and 5051 transitions. [2023-12-21 11:23:53,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 11:23:53,015 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 [2023-12-21 11:23:53,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:23:53,024 INFO L225 Difference]: With dead ends: 3787 [2023-12-21 11:23:53,024 INFO L226 Difference]: Without dead ends: 2571 [2023-12-21 11:23:53,027 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 [2023-12-21 11:23:53,027 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 [2023-12-21 11:23:53,027 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] [2023-12-21 11:23:53,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2571 states. [2023-12-21 11:23:53,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2571 to 2392. [2023-12-21 11:23:53,243 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) [2023-12-21 11:23:53,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2392 states to 2392 states and 3152 transitions. [2023-12-21 11:23:53,250 INFO L78 Accepts]: Start accepts. Automaton has 2392 states and 3152 transitions. Word has length 94 [2023-12-21 11:23:53,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:23:53,250 INFO L495 AbstractCegarLoop]: Abstraction has 2392 states and 3152 transitions. [2023-12-21 11:23:53,250 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) [2023-12-21 11:23:53,250 INFO L276 IsEmpty]: Start isEmpty. Operand 2392 states and 3152 transitions. [2023-12-21 11:23:53,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-21 11:23:53,252 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:23:53,252 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] [2023-12-21 11:23:53,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-21 11:23:53,252 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:23:53,252 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:23:53,252 INFO L85 PathProgramCache]: Analyzing trace with hash -615930275, now seen corresponding path program 1 times [2023-12-21 11:23:53,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:23:53,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836237109] [2023-12-21 11:23:53,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:23:53,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:23:53,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:53,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:23:53,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:53,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-12-21 11:23:53,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:53,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 11:23:53,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:53,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-21 11:23:53,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:53,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-21 11:23:53,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:53,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-12-21 11:23:53,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:53,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-12-21 11:23:53,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:53,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 11:23:53,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:53,293 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-21 11:23:53,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:23:53,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836237109] [2023-12-21 11:23:53,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836237109] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:23:53,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:23:53,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 11:23:53,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397038256] [2023-12-21 11:23:53,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:23:53,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:23:53,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:23:53,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:23:53,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:23:53,295 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) [2023-12-21 11:23:53,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:23:53,535 INFO L93 Difference]: Finished difference Result 4607 states and 6090 transitions. [2023-12-21 11:23:53,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:23:53,536 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 [2023-12-21 11:23:53,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:23:53,545 INFO L225 Difference]: With dead ends: 4607 [2023-12-21 11:23:53,545 INFO L226 Difference]: Without dead ends: 2407 [2023-12-21 11:23:53,550 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 [2023-12-21 11:23:53,551 INFO L413 NwaCegarLoop]: 236 mSDtfsCounter, 4 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:23:53,551 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 445 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:23:53,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2407 states. [2023-12-21 11:23:53,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2407 to 2395. [2023-12-21 11:23:53,717 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) [2023-12-21 11:23:53,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2395 states to 2395 states and 3155 transitions. [2023-12-21 11:23:53,723 INFO L78 Accepts]: Start accepts. Automaton has 2395 states and 3155 transitions. Word has length 94 [2023-12-21 11:23:53,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:23:53,723 INFO L495 AbstractCegarLoop]: Abstraction has 2395 states and 3155 transitions. [2023-12-21 11:23:53,723 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) [2023-12-21 11:23:53,724 INFO L276 IsEmpty]: Start isEmpty. Operand 2395 states and 3155 transitions. [2023-12-21 11:23:53,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-21 11:23:53,725 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:23:53,725 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] [2023-12-21 11:23:53,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-21 11:23:53,725 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:23:53,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:23:53,725 INFO L85 PathProgramCache]: Analyzing trace with hash -83516986, now seen corresponding path program 1 times [2023-12-21 11:23:53,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:23:53,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015609014] [2023-12-21 11:23:53,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:23:53,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:23:53,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:53,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:23:53,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:53,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-12-21 11:23:53,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:53,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 11:23:53,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:53,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-12-21 11:23:53,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:53,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-21 11:23:53,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:53,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-12-21 11:23:53,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:53,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-12-21 11:23:53,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:53,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 11:23:53,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:53,813 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-21 11:23:53,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:23:53,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015609014] [2023-12-21 11:23:53,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015609014] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:23:53,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:23:53,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 11:23:53,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105802007] [2023-12-21 11:23:53,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:23:53,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 11:23:53,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:23:53,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 11:23:53,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 11:23:53,815 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) [2023-12-21 11:23:54,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:23:54,088 INFO L93 Difference]: Finished difference Result 5706 states and 7548 transitions. [2023-12-21 11:23:54,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 11:23:54,089 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 [2023-12-21 11:23:54,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:23:54,102 INFO L225 Difference]: With dead ends: 5706 [2023-12-21 11:23:54,102 INFO L226 Difference]: Without dead ends: 3725 [2023-12-21 11:23:54,124 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 [2023-12-21 11:23:54,124 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, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:23:54,125 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [188 Valid, 1101 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 11:23:54,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3725 states. [2023-12-21 11:23:54,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3725 to 3300. [2023-12-21 11:23:54,512 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) [2023-12-21 11:23:54,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3300 states to 3300 states and 4339 transitions. [2023-12-21 11:23:54,523 INFO L78 Accepts]: Start accepts. Automaton has 3300 states and 4339 transitions. Word has length 94 [2023-12-21 11:23:54,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:23:54,523 INFO L495 AbstractCegarLoop]: Abstraction has 3300 states and 4339 transitions. [2023-12-21 11:23:54,523 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) [2023-12-21 11:23:54,524 INFO L276 IsEmpty]: Start isEmpty. Operand 3300 states and 4339 transitions. [2023-12-21 11:23:54,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-21 11:23:54,525 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:23:54,525 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] [2023-12-21 11:23:54,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-21 11:23:54,525 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:23:54,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:23:54,526 INFO L85 PathProgramCache]: Analyzing trace with hash -104683305, now seen corresponding path program 1 times [2023-12-21 11:23:54,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:23:54,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561141518] [2023-12-21 11:23:54,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:23:54,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:23:54,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:54,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:23:54,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:54,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 11:23:54,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:54,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-21 11:23:54,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:54,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 11:23:54,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:54,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-21 11:23:54,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:54,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-12-21 11:23:54,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:54,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-21 11:23:54,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:54,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-12-21 11:23:54,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:54,617 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-21 11:23:54,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:23:54,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561141518] [2023-12-21 11:23:54,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561141518] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:23:54,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:23:54,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 11:23:54,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425443834] [2023-12-21 11:23:54,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:23:54,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 11:23:54,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:23:54,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 11:23:54,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 11:23:54,619 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) [2023-12-21 11:23:54,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:23:54,830 INFO L93 Difference]: Finished difference Result 6278 states and 8272 transitions. [2023-12-21 11:23:54,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 11:23:54,831 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 [2023-12-21 11:23:54,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:23:54,853 INFO L225 Difference]: With dead ends: 6278 [2023-12-21 11:23:54,853 INFO L226 Difference]: Without dead ends: 3040 [2023-12-21 11:23:54,930 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 [2023-12-21 11:23:54,931 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 [2023-12-21 11:23:54,934 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] [2023-12-21 11:23:54,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3040 states. [2023-12-21 11:23:55,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3040 to 2937. [2023-12-21 11:23:55,126 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) [2023-12-21 11:23:55,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2937 states to 2937 states and 3872 transitions. [2023-12-21 11:23:55,134 INFO L78 Accepts]: Start accepts. Automaton has 2937 states and 3872 transitions. Word has length 95 [2023-12-21 11:23:55,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:23:55,134 INFO L495 AbstractCegarLoop]: Abstraction has 2937 states and 3872 transitions. [2023-12-21 11:23:55,134 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) [2023-12-21 11:23:55,134 INFO L276 IsEmpty]: Start isEmpty. Operand 2937 states and 3872 transitions. [2023-12-21 11:23:55,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-21 11:23:55,135 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:23:55,136 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] [2023-12-21 11:23:55,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-21 11:23:55,136 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:23:55,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:23:55,136 INFO L85 PathProgramCache]: Analyzing trace with hash -58029957, now seen corresponding path program 1 times [2023-12-21 11:23:55,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:23:55,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204226268] [2023-12-21 11:23:55,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:23:55,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:23:55,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:55,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:23:55,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:55,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 11:23:55,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:55,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-21 11:23:55,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:55,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 11:23:55,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:55,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-21 11:23:55,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:55,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-12-21 11:23:55,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:55,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-21 11:23:55,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:55,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-12-21 11:23:55,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:55,176 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-21 11:23:55,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:23:55,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204226268] [2023-12-21 11:23:55,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204226268] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:23:55,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:23:55,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 11:23:55,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862867995] [2023-12-21 11:23:55,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:23:55,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 11:23:55,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:23:55,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 11:23:55,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 11:23:55,178 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) [2023-12-21 11:23:55,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:23:55,424 INFO L93 Difference]: Finished difference Result 5747 states and 7608 transitions. [2023-12-21 11:23:55,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 11:23:55,424 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 [2023-12-21 11:23:55,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:23:55,433 INFO L225 Difference]: With dead ends: 5747 [2023-12-21 11:23:55,433 INFO L226 Difference]: Without dead ends: 2979 [2023-12-21 11:23:55,438 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 [2023-12-21 11:23:55,439 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 [2023-12-21 11:23:55,440 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] [2023-12-21 11:23:55,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2979 states. [2023-12-21 11:23:55,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2979 to 2944. [2023-12-21 11:23:55,701 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) [2023-12-21 11:23:55,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2944 states to 2944 states and 3879 transitions. [2023-12-21 11:23:55,711 INFO L78 Accepts]: Start accepts. Automaton has 2944 states and 3879 transitions. Word has length 97 [2023-12-21 11:23:55,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:23:55,711 INFO L495 AbstractCegarLoop]: Abstraction has 2944 states and 3879 transitions. [2023-12-21 11:23:55,711 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) [2023-12-21 11:23:55,712 INFO L276 IsEmpty]: Start isEmpty. Operand 2944 states and 3879 transitions. [2023-12-21 11:23:55,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-12-21 11:23:55,713 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:23:55,713 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] [2023-12-21 11:23:55,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-12-21 11:23:55,713 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:23:55,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:23:55,714 INFO L85 PathProgramCache]: Analyzing trace with hash 963007751, now seen corresponding path program 1 times [2023-12-21 11:23:55,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:23:55,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659561730] [2023-12-21 11:23:55,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:23:55,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:23:55,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:55,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:23:55,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:55,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 11:23:55,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:55,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-21 11:23:55,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:55,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 11:23:55,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:55,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-12-21 11:23:55,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:55,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-12-21 11:23:55,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:55,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-12-21 11:23:55,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:55,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-12-21 11:23:55,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:55,811 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-21 11:23:55,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:23:55,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659561730] [2023-12-21 11:23:55,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659561730] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:23:55,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:23:55,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 11:23:55,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685696940] [2023-12-21 11:23:55,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:23:55,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 11:23:55,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:23:55,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 11:23:55,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 11:23:55,813 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) [2023-12-21 11:23:56,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:23:56,079 INFO L93 Difference]: Finished difference Result 5706 states and 7536 transitions. [2023-12-21 11:23:56,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 11:23:56,080 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 [2023-12-21 11:23:56,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:23:56,089 INFO L225 Difference]: With dead ends: 5706 [2023-12-21 11:23:56,089 INFO L226 Difference]: Without dead ends: 2871 [2023-12-21 11:23:56,096 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 [2023-12-21 11:23:56,096 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 [2023-12-21 11:23:56,096 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] [2023-12-21 11:23:56,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2871 states. [2023-12-21 11:23:56,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2871 to 2706. [2023-12-21 11:23:56,321 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) [2023-12-21 11:23:56,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2706 states to 2706 states and 3565 transitions. [2023-12-21 11:23:56,327 INFO L78 Accepts]: Start accepts. Automaton has 2706 states and 3565 transitions. Word has length 97 [2023-12-21 11:23:56,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:23:56,327 INFO L495 AbstractCegarLoop]: Abstraction has 2706 states and 3565 transitions. [2023-12-21 11:23:56,327 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) [2023-12-21 11:23:56,327 INFO L276 IsEmpty]: Start isEmpty. Operand 2706 states and 3565 transitions. [2023-12-21 11:23:56,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-12-21 11:23:56,330 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:23:56,331 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] [2023-12-21 11:23:56,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-12-21 11:23:56,331 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:23:56,331 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:23:56,331 INFO L85 PathProgramCache]: Analyzing trace with hash -1659213603, now seen corresponding path program 1 times [2023-12-21 11:23:56,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:23:56,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677918312] [2023-12-21 11:23:56,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:23:56,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:23:56,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:56,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:23:56,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:56,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-21 11:23:56,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:56,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-12-21 11:23:56,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:56,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 11:23:56,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:56,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-12-21 11:23:56,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:56,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-12-21 11:23:56,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:56,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 11:23:56,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:56,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-12-21 11:23:56,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:56,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-21 11:23:56,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:56,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-12-21 11:23:56,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:56,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 11:23:56,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:56,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-12-21 11:23:56,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:56,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-12-21 11:23:56,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:56,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-21 11:23:56,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:56,563 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 14 proven. 8 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-12-21 11:23:56,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:23:56,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677918312] [2023-12-21 11:23:56,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677918312] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:23:56,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [476326018] [2023-12-21 11:23:56,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:23:56,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:23:56,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:23:56,567 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) [2023-12-21 11:23:56,588 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-21 11:23:56,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:56,725 INFO L262 TraceCheckSpWp]: Trace formula consists of 612 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-21 11:23:56,736 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:23:56,894 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 55 proven. 4 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-12-21 11:23:56,895 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:23:57,044 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 22 proven. 2 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2023-12-21 11:23:57,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [476326018] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:23:57,046 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:23:57,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2023-12-21 11:23:57,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90509900] [2023-12-21 11:23:57,046 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:23:57,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-21 11:23:57,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:23:57,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-21 11:23:57,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2023-12-21 11:23:57,047 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) [2023-12-21 11:23:58,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:23:58,308 INFO L93 Difference]: Finished difference Result 6443 states and 8628 transitions. [2023-12-21 11:23:58,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-21 11:23:58,308 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 [2023-12-21 11:23:58,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:23:58,318 INFO L225 Difference]: With dead ends: 6443 [2023-12-21 11:23:58,319 INFO L226 Difference]: Without dead ends: 3973 [2023-12-21 11:23:58,323 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 306 SyntacticMatches, 4 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=252, Invalid=938, Unknown=0, NotChecked=0, Total=1190 [2023-12-21 11:23:58,323 INFO L413 NwaCegarLoop]: 227 mSDtfsCounter, 1782 mSDsluCounter, 1573 mSDsCounter, 0 mSdLazyCounter, 483 mSolverCounterSat, 597 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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, 0.6s IncrementalHoareTripleChecker+Time [2023-12-21 11:23:58,323 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1782 Valid, 1800 Invalid, 1080 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [597 Valid, 483 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-21 11:23:58,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3973 states. [2023-12-21 11:23:58,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3973 to 3416. [2023-12-21 11:23:58,602 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) [2023-12-21 11:23:58,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3416 states to 3416 states and 4467 transitions. [2023-12-21 11:23:58,611 INFO L78 Accepts]: Start accepts. Automaton has 3416 states and 4467 transitions. Word has length 140 [2023-12-21 11:23:58,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:23:58,611 INFO L495 AbstractCegarLoop]: Abstraction has 3416 states and 4467 transitions. [2023-12-21 11:23:58,611 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) [2023-12-21 11:23:58,611 INFO L276 IsEmpty]: Start isEmpty. Operand 3416 states and 4467 transitions. [2023-12-21 11:23:58,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2023-12-21 11:23:58,615 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:23:58,615 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] [2023-12-21 11:23:58,625 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-21 11:23:58,825 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 [2023-12-21 11:23:58,825 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:23:58,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:23:58,825 INFO L85 PathProgramCache]: Analyzing trace with hash -1609450868, now seen corresponding path program 1 times [2023-12-21 11:23:58,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:23:58,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973008399] [2023-12-21 11:23:58,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:23:58,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:23:58,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:59,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:23:59,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:59,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-21 11:23:59,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:59,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-21 11:23:59,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:59,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-21 11:23:59,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:59,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-21 11:23:59,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:59,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-21 11:23:59,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:59,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-21 11:23:59,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:59,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-21 11:23:59,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:59,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-12-21 11:23:59,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:59,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 11:23:59,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:59,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-21 11:23:59,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:59,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-21 11:23:59,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:59,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-12-21 11:23:59,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:59,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2023-12-21 11:23:59,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:59,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-12-21 11:23:59,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:59,122 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 9 proven. 14 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2023-12-21 11:23:59,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:23:59,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973008399] [2023-12-21 11:23:59,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973008399] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:23:59,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1194862992] [2023-12-21 11:23:59,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:23:59,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:23:59,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:23:59,138 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) [2023-12-21 11:23:59,154 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-21 11:23:59,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:23:59,281 INFO L262 TraceCheckSpWp]: Trace formula consists of 648 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-21 11:23:59,292 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:23:59,464 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 30 proven. 43 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-21 11:23:59,464 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:23:59,633 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-12-21 11:23:59,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1194862992] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:23:59,633 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:23:59,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 16 [2023-12-21 11:23:59,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35364974] [2023-12-21 11:23:59,634 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:23:59,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-21 11:23:59,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:23:59,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-21 11:23:59,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2023-12-21 11:23:59,636 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) [2023-12-21 11:24:04,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:24:04,743 INFO L93 Difference]: Finished difference Result 13961 states and 18788 transitions. [2023-12-21 11:24:04,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2023-12-21 11:24:04,744 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 [2023-12-21 11:24:04,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:24:04,775 INFO L225 Difference]: With dead ends: 13961 [2023-12-21 11:24:04,775 INFO L226 Difference]: Without dead ends: 10807 [2023-12-21 11:24:04,785 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 349 SyntacticMatches, 4 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4167 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1651, Invalid=10559, Unknown=0, NotChecked=0, Total=12210 [2023-12-21 11:24:04,786 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, 0.1s SdHoareTripleChecker+Time, 1739 IncrementalHoareTripleChecker+Valid, 2245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-21 11:24:04,786 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4003 Valid, 8058 Invalid, 3984 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1739 Valid, 2245 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-21 11:24:04,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10807 states. [2023-12-21 11:24:05,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10807 to 5998. [2023-12-21 11:24:05,384 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) [2023-12-21 11:24:05,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5998 states to 5998 states and 7857 transitions. [2023-12-21 11:24:05,395 INFO L78 Accepts]: Start accepts. Automaton has 5998 states and 7857 transitions. Word has length 149 [2023-12-21 11:24:05,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:24:05,396 INFO L495 AbstractCegarLoop]: Abstraction has 5998 states and 7857 transitions. [2023-12-21 11:24:05,396 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) [2023-12-21 11:24:05,396 INFO L276 IsEmpty]: Start isEmpty. Operand 5998 states and 7857 transitions. [2023-12-21 11:24:05,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-21 11:24:05,403 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:24:05,403 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] [2023-12-21 11:24:05,408 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-21 11:24:05,608 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 [2023-12-21 11:24:05,609 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:24:05,609 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:24:05,609 INFO L85 PathProgramCache]: Analyzing trace with hash -1279532320, now seen corresponding path program 1 times [2023-12-21 11:24:05,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:24:05,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468974451] [2023-12-21 11:24:05,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:24:05,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:24:05,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:05,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:24:05,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:05,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-21 11:24:05,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:05,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-21 11:24:05,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:05,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-21 11:24:05,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:05,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-21 11:24:05,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:05,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 11:24:05,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:05,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-21 11:24:05,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:05,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-21 11:24:05,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:05,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-21 11:24:05,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:05,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-12-21 11:24:05,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:05,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 11:24:05,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:05,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-12-21 11:24:05,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:05,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-12-21 11:24:05,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:05,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-12-21 11:24:05,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:05,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-12-21 11:24:05,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:05,757 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-12-21 11:24:05,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:24:05,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468974451] [2023-12-21 11:24:05,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468974451] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:24:05,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:24:05,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 11:24:05,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255409277] [2023-12-21 11:24:05,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:24:05,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 11:24:05,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:24:05,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 11:24:05,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:24:05,759 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) [2023-12-21 11:24:06,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:24:06,948 INFO L93 Difference]: Finished difference Result 18544 states and 24701 transitions. [2023-12-21 11:24:06,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-21 11:24:06,949 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 [2023-12-21 11:24:06,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:24:06,993 INFO L225 Difference]: With dead ends: 18544 [2023-12-21 11:24:06,993 INFO L226 Difference]: Without dead ends: 12887 [2023-12-21 11:24:07,006 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 [2023-12-21 11:24:07,007 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 [2023-12-21 11:24:07,007 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] [2023-12-21 11:24:07,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12887 states. [2023-12-21 11:24:07,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12887 to 8156. [2023-12-21 11:24:07,810 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) [2023-12-21 11:24:07,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8156 states to 8156 states and 10687 transitions. [2023-12-21 11:24:07,831 INFO L78 Accepts]: Start accepts. Automaton has 8156 states and 10687 transitions. Word has length 151 [2023-12-21 11:24:07,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:24:07,832 INFO L495 AbstractCegarLoop]: Abstraction has 8156 states and 10687 transitions. [2023-12-21 11:24:07,832 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) [2023-12-21 11:24:07,832 INFO L276 IsEmpty]: Start isEmpty. Operand 8156 states and 10687 transitions. [2023-12-21 11:24:07,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-12-21 11:24:07,842 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:24:07,842 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] [2023-12-21 11:24:07,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-12-21 11:24:07,843 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:24:07,843 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:24:07,843 INFO L85 PathProgramCache]: Analyzing trace with hash -1423134939, now seen corresponding path program 1 times [2023-12-21 11:24:07,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:24:07,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704806240] [2023-12-21 11:24:07,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:24:07,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:24:07,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:07,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:24:07,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:07,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-21 11:24:07,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:07,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-21 11:24:07,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:08,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-21 11:24:08,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:08,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-21 11:24:08,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:08,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 11:24:08,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:08,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-21 11:24:08,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:08,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-21 11:24:08,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:08,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-21 11:24:08,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:08,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-12-21 11:24:08,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:08,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-12-21 11:24:08,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:08,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-21 11:24:08,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:08,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-12-21 11:24:08,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:08,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-12-21 11:24:08,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:08,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-12-21 11:24:08,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:08,019 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 14 proven. 10 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2023-12-21 11:24:08,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:24:08,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704806240] [2023-12-21 11:24:08,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704806240] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:24:08,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1822577202] [2023-12-21 11:24:08,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:24:08,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:24:08,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:24:08,037 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) [2023-12-21 11:24:08,105 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-21 11:24:08,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:08,231 INFO L262 TraceCheckSpWp]: Trace formula consists of 653 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-21 11:24:08,240 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:24:08,285 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 49 proven. 6 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-21 11:24:08,285 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:24:08,350 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-12-21 11:24:08,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1822577202] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-21 11:24:08,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-21 11:24:08,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7, 7] total 13 [2023-12-21 11:24:08,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886049953] [2023-12-21 11:24:08,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:24:08,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 11:24:08,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:24:08,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 11:24:08,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2023-12-21 11:24:08,353 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) [2023-12-21 11:24:08,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:24:08,871 INFO L93 Difference]: Finished difference Result 13340 states and 17531 transitions. [2023-12-21 11:24:08,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 11:24:08,872 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 [2023-12-21 11:24:08,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:24:08,884 INFO L225 Difference]: With dead ends: 13340 [2023-12-21 11:24:08,884 INFO L226 Difference]: Without dead ends: 5370 [2023-12-21 11:24:08,893 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 [2023-12-21 11:24:08,893 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 [2023-12-21 11:24:08,893 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] [2023-12-21 11:24:08,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5370 states. [2023-12-21 11:24:09,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5370 to 5148. [2023-12-21 11:24:09,299 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) [2023-12-21 11:24:09,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5148 states to 5148 states and 6751 transitions. [2023-12-21 11:24:09,309 INFO L78 Accepts]: Start accepts. Automaton has 5148 states and 6751 transitions. Word has length 153 [2023-12-21 11:24:09,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:24:09,310 INFO L495 AbstractCegarLoop]: Abstraction has 5148 states and 6751 transitions. [2023-12-21 11:24:09,310 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) [2023-12-21 11:24:09,310 INFO L276 IsEmpty]: Start isEmpty. Operand 5148 states and 6751 transitions. [2023-12-21 11:24:09,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-12-21 11:24:09,316 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:24:09,316 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] [2023-12-21 11:24:09,324 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-21 11:24:09,522 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 [2023-12-21 11:24:09,524 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:24:09,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:24:09,525 INFO L85 PathProgramCache]: Analyzing trace with hash -1968547094, now seen corresponding path program 1 times [2023-12-21 11:24:09,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:24:09,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616294998] [2023-12-21 11:24:09,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:24:09,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:24:09,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:09,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:24:09,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:09,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-21 11:24:09,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:09,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-21 11:24:09,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:09,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-21 11:24:09,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:09,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-21 11:24:09,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:09,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 11:24:09,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:09,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-21 11:24:09,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:09,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-21 11:24:09,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:09,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-21 11:24:09,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:09,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-21 11:24:09,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:09,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-21 11:24:09,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:09,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-21 11:24:09,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:09,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-12-21 11:24:09,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:09,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-12-21 11:24:09,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:09,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-21 11:24:09,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:09,699 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 13 proven. 10 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2023-12-21 11:24:09,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:24:09,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616294998] [2023-12-21 11:24:09,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616294998] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:24:09,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2027760691] [2023-12-21 11:24:09,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:24:09,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:24:09,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:24:09,701 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) [2023-12-21 11:24:09,703 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-21 11:24:09,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:09,837 INFO L262 TraceCheckSpWp]: Trace formula consists of 670 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-21 11:24:09,841 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:24:10,182 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 57 proven. 18 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-21 11:24:10,183 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:24:10,491 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 13 proven. 10 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2023-12-21 11:24:10,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2027760691] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:24:10,491 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:24:10,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 10, 8] total 21 [2023-12-21 11:24:10,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050046762] [2023-12-21 11:24:10,491 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:24:10,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-21 11:24:10,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:24:10,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-21 11:24:10,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=340, Unknown=0, NotChecked=0, Total=420 [2023-12-21 11:24:10,493 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) [2023-12-21 11:24:14,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:24:14,370 INFO L93 Difference]: Finished difference Result 14591 states and 19285 transitions. [2023-12-21 11:24:14,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2023-12-21 11:24:14,371 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 [2023-12-21 11:24:14,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:24:14,398 INFO L225 Difference]: With dead ends: 14591 [2023-12-21 11:24:14,398 INFO L226 Difference]: Without dead ends: 9684 [2023-12-21 11:24:14,408 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 456 GetRequests, 350 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3954 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1778, Invalid=9778, Unknown=0, NotChecked=0, Total=11556 [2023-12-21 11:24:14,409 INFO L413 NwaCegarLoop]: 529 mSDtfsCounter, 3034 mSDsluCounter, 4375 mSDsCounter, 0 mSdLazyCounter, 2696 mSolverCounterSat, 998 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s 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, 1.6s IncrementalHoareTripleChecker+Time [2023-12-21 11:24:14,409 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3034 Valid, 4904 Invalid, 3694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [998 Valid, 2696 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-21 11:24:14,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9684 states. [2023-12-21 11:24:15,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9684 to 8637. [2023-12-21 11:24:15,245 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) [2023-12-21 11:24:15,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8637 states to 8637 states and 11300 transitions. [2023-12-21 11:24:15,260 INFO L78 Accepts]: Start accepts. Automaton has 8637 states and 11300 transitions. Word has length 154 [2023-12-21 11:24:15,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:24:15,261 INFO L495 AbstractCegarLoop]: Abstraction has 8637 states and 11300 transitions. [2023-12-21 11:24:15,261 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) [2023-12-21 11:24:15,261 INFO L276 IsEmpty]: Start isEmpty. Operand 8637 states and 11300 transitions. [2023-12-21 11:24:15,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-12-21 11:24:15,270 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:24:15,270 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] [2023-12-21 11:24:15,292 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-21 11:24:15,476 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 [2023-12-21 11:24:15,476 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:24:15,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:24:15,476 INFO L85 PathProgramCache]: Analyzing trace with hash 1365470785, now seen corresponding path program 1 times [2023-12-21 11:24:15,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:24:15,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807345944] [2023-12-21 11:24:15,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:24:15,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:24:15,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:16,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:24:16,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:16,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-21 11:24:16,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:16,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-21 11:24:16,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:16,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-21 11:24:16,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:16,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-21 11:24:16,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:16,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 11:24:16,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:16,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-21 11:24:16,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:16,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-21 11:24:16,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:16,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-21 11:24:16,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:16,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-21 11:24:16,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:16,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-21 11:24:16,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:16,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-21 11:24:16,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:16,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-12-21 11:24:16,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:16,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-12-21 11:24:16,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:16,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-21 11:24:16,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:16,047 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 22 proven. 2 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2023-12-21 11:24:16,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:24:16,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807345944] [2023-12-21 11:24:16,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807345944] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:24:16,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1585287094] [2023-12-21 11:24:16,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:24:16,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:24:16,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:24:16,066 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) [2023-12-21 11:24:16,113 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-21 11:24:16,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:16,242 INFO L262 TraceCheckSpWp]: Trace formula consists of 668 conjuncts, 44 conjunts are in the unsatisfiable core [2023-12-21 11:24:16,245 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:24:16,695 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 66 proven. 10 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-21 11:24:16,695 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:24:17,097 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 14 proven. 10 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2023-12-21 11:24:17,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1585287094] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:24:17,097 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:24:17,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 10] total 25 [2023-12-21 11:24:17,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967651658] [2023-12-21 11:24:17,098 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:24:17,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-12-21 11:24:17,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:24:17,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-12-21 11:24:17,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=504, Unknown=0, NotChecked=0, Total=600 [2023-12-21 11:24:17,099 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) [2023-12-21 11:24:20,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:24:20,759 INFO L93 Difference]: Finished difference Result 18211 states and 23854 transitions. [2023-12-21 11:24:20,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2023-12-21 11:24:20,759 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 [2023-12-21 11:24:20,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:24:20,784 INFO L225 Difference]: With dead ends: 18211 [2023-12-21 11:24:20,784 INFO L226 Difference]: Without dead ends: 9822 [2023-12-21 11:24:20,794 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 413 GetRequests, 340 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1618 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=831, Invalid=4719, Unknown=0, NotChecked=0, Total=5550 [2023-12-21 11:24:20,795 INFO L413 NwaCegarLoop]: 314 mSDtfsCounter, 1440 mSDsluCounter, 2782 mSDsCounter, 0 mSdLazyCounter, 1520 mSolverCounterSat, 451 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s 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 [2023-12-21 11:24:20,795 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] [2023-12-21 11:24:20,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9822 states. [2023-12-21 11:24:21,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9822 to 9568. [2023-12-21 11:24:21,829 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) [2023-12-21 11:24:21,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9568 states to 9568 states and 12477 transitions. [2023-12-21 11:24:21,850 INFO L78 Accepts]: Start accepts. Automaton has 9568 states and 12477 transitions. Word has length 154 [2023-12-21 11:24:21,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:24:21,851 INFO L495 AbstractCegarLoop]: Abstraction has 9568 states and 12477 transitions. [2023-12-21 11:24:21,851 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) [2023-12-21 11:24:21,851 INFO L276 IsEmpty]: Start isEmpty. Operand 9568 states and 12477 transitions. [2023-12-21 11:24:21,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2023-12-21 11:24:21,858 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:24:21,858 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] [2023-12-21 11:24:21,865 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-21 11:24:22,065 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 [2023-12-21 11:24:22,066 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:24:22,066 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:24:22,066 INFO L85 PathProgramCache]: Analyzing trace with hash 769356944, now seen corresponding path program 1 times [2023-12-21 11:24:22,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:24:22,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972317650] [2023-12-21 11:24:22,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:24:22,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:24:22,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:22,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:24:22,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:22,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-21 11:24:22,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:22,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-21 11:24:22,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:22,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-21 11:24:22,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:22,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-21 11:24:22,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:22,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-21 11:24:22,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:22,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-21 11:24:22,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:22,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-21 11:24:22,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:22,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-12-21 11:24:22,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:22,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-12-21 11:24:22,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:22,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-21 11:24:22,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:22,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-12-21 11:24:22,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:22,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-12-21 11:24:22,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:22,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-12-21 11:24:22,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:22,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-21 11:24:22,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:22,230 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 14 proven. 25 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2023-12-21 11:24:22,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:24:22,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972317650] [2023-12-21 11:24:22,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972317650] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:24:22,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1815659359] [2023-12-21 11:24:22,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:24:22,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:24:22,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:24:22,232 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) [2023-12-21 11:24:22,266 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-21 11:24:22,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:22,385 INFO L262 TraceCheckSpWp]: Trace formula consists of 670 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-21 11:24:22,388 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:24:22,516 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 8 proven. 84 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-21 11:24:22,517 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:24:22,628 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 14 proven. 25 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2023-12-21 11:24:22,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1815659359] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:24:22,628 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:24:22,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 10 [2023-12-21 11:24:22,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363775026] [2023-12-21 11:24:22,628 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:24:22,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-21 11:24:22,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:24:22,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-21 11:24:22,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-12-21 11:24:22,630 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) [2023-12-21 11:24:24,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:24:24,140 INFO L93 Difference]: Finished difference Result 24381 states and 31523 transitions. [2023-12-21 11:24:24,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-21 11:24:24,141 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 [2023-12-21 11:24:24,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:24:24,197 INFO L225 Difference]: With dead ends: 24381 [2023-12-21 11:24:24,198 INFO L226 Difference]: Without dead ends: 15142 [2023-12-21 11:24:24,215 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 [2023-12-21 11:24:24,216 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 [2023-12-21 11:24:24,216 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] [2023-12-21 11:24:24,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15142 states. [2023-12-21 11:24:25,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15142 to 12796. [2023-12-21 11:24:25,616 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) [2023-12-21 11:24:25,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12796 states to 12796 states and 16465 transitions. [2023-12-21 11:24:25,645 INFO L78 Accepts]: Start accepts. Automaton has 12796 states and 16465 transitions. Word has length 156 [2023-12-21 11:24:25,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:24:25,646 INFO L495 AbstractCegarLoop]: Abstraction has 12796 states and 16465 transitions. [2023-12-21 11:24:25,646 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) [2023-12-21 11:24:25,646 INFO L276 IsEmpty]: Start isEmpty. Operand 12796 states and 16465 transitions. [2023-12-21 11:24:25,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-12-21 11:24:25,652 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:24:25,653 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] [2023-12-21 11:24:25,659 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-21 11:24:25,858 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 [2023-12-21 11:24:25,858 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:24:25,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:24:25,859 INFO L85 PathProgramCache]: Analyzing trace with hash -393426588, now seen corresponding path program 1 times [2023-12-21 11:24:25,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:24:25,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254594077] [2023-12-21 11:24:25,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:24:25,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:24:25,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:26,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:24:26,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:26,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-21 11:24:26,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:26,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-21 11:24:26,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:26,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-21 11:24:26,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:26,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-21 11:24:26,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:26,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 11:24:26,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:26,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-21 11:24:26,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:26,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-21 11:24:26,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:26,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-21 11:24:26,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:26,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-21 11:24:26,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:26,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-12-21 11:24:26,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:26,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-12-21 11:24:26,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:26,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-12-21 11:24:26,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:26,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2023-12-21 11:24:26,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:26,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-12-21 11:24:26,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:26,361 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 22 proven. 5 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2023-12-21 11:24:26,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:24:26,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254594077] [2023-12-21 11:24:26,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254594077] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:24:26,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [15472089] [2023-12-21 11:24:26,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:24:26,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:24:26,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:24:26,363 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) [2023-12-21 11:24:26,381 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-21 11:24:26,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:26,524 INFO L262 TraceCheckSpWp]: Trace formula consists of 669 conjuncts, 40 conjunts are in the unsatisfiable core [2023-12-21 11:24:26,526 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:24:26,957 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 66 proven. 13 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-21 11:24:26,957 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:24:27,497 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 15 proven. 12 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2023-12-21 11:24:27,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [15472089] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:24:27,497 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:24:27,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 10] total 25 [2023-12-21 11:24:27,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661609969] [2023-12-21 11:24:27,498 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:24:27,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-12-21 11:24:27,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:24:27,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-12-21 11:24:27,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=505, Unknown=0, NotChecked=0, Total=600 [2023-12-21 11:24:27,499 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) [2023-12-21 11:24:31,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:24:31,071 INFO L93 Difference]: Finished difference Result 21329 states and 27564 transitions. [2023-12-21 11:24:31,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-12-21 11:24:31,071 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 [2023-12-21 11:24:31,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:24:31,105 INFO L225 Difference]: With dead ends: 21329 [2023-12-21 11:24:31,105 INFO L226 Difference]: Without dead ends: 12381 [2023-12-21 11:24:31,119 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 395 GetRequests, 336 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 965 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=555, Invalid=3105, Unknown=0, NotChecked=0, Total=3660 [2023-12-21 11:24:31,120 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 [2023-12-21 11:24:31,120 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] [2023-12-21 11:24:31,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12381 states. [2023-12-21 11:24:32,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12381 to 12223. [2023-12-21 11:24:32,660 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) [2023-12-21 11:24:32,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12223 states to 12223 states and 15742 transitions. [2023-12-21 11:24:32,688 INFO L78 Accepts]: Start accepts. Automaton has 12223 states and 15742 transitions. Word has length 155 [2023-12-21 11:24:32,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:24:32,689 INFO L495 AbstractCegarLoop]: Abstraction has 12223 states and 15742 transitions. [2023-12-21 11:24:32,689 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) [2023-12-21 11:24:32,689 INFO L276 IsEmpty]: Start isEmpty. Operand 12223 states and 15742 transitions. [2023-12-21 11:24:32,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2023-12-21 11:24:32,695 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:24:32,695 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] [2023-12-21 11:24:32,702 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-21 11:24:32,901 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 [2023-12-21 11:24:32,902 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:24:32,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:24:32,902 INFO L85 PathProgramCache]: Analyzing trace with hash 1657623740, now seen corresponding path program 1 times [2023-12-21 11:24:32,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:24:32,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412659769] [2023-12-21 11:24:32,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:24:32,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:24:32,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:33,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:24:33,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:33,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-21 11:24:33,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:33,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-21 11:24:33,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:33,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-21 11:24:33,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:33,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-21 11:24:33,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:33,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 11:24:33,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:33,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-21 11:24:33,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:33,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-21 11:24:33,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:33,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-21 11:24:33,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:33,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-12-21 11:24:33,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:33,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-12-21 11:24:33,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:33,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-12-21 11:24:33,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:33,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-12-21 11:24:33,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:33,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2023-12-21 11:24:33,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:33,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2023-12-21 11:24:33,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:33,090 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 19 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-12-21 11:24:33,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:24:33,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412659769] [2023-12-21 11:24:33,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412659769] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:24:33,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [703507269] [2023-12-21 11:24:33,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:24:33,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:24:33,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:24:33,092 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) [2023-12-21 11:24:33,116 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-21 11:24:33,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:33,247 INFO L262 TraceCheckSpWp]: Trace formula consists of 670 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-21 11:24:33,249 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:24:33,662 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 57 proven. 23 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-21 11:24:33,662 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:24:33,904 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 13 proven. 11 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2023-12-21 11:24:33,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [703507269] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:24:33,904 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:24:33,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 20 [2023-12-21 11:24:33,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065753255] [2023-12-21 11:24:33,904 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:24:33,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-21 11:24:33,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:24:33,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-21 11:24:33,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=318, Unknown=0, NotChecked=0, Total=380 [2023-12-21 11:24:33,908 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) [2023-12-21 11:24:37,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:24:37,680 INFO L93 Difference]: Finished difference Result 27257 states and 36062 transitions. [2023-12-21 11:24:37,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-12-21 11:24:37,681 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 [2023-12-21 11:24:37,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:24:37,727 INFO L225 Difference]: With dead ends: 27257 [2023-12-21 11:24:37,727 INFO L226 Difference]: Without dead ends: 15180 [2023-12-21 11:24:37,738 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 394 GetRequests, 338 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 764 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=727, Invalid=2579, Unknown=0, NotChecked=0, Total=3306 [2023-12-21 11:24:37,739 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 [2023-12-21 11:24:37,739 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] [2023-12-21 11:24:37,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15180 states. [2023-12-21 11:24:39,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15180 to 12101. [2023-12-21 11:24:39,410 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) [2023-12-21 11:24:39,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12101 states to 12101 states and 15465 transitions. [2023-12-21 11:24:39,436 INFO L78 Accepts]: Start accepts. Automaton has 12101 states and 15465 transitions. Word has length 156 [2023-12-21 11:24:39,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:24:39,437 INFO L495 AbstractCegarLoop]: Abstraction has 12101 states and 15465 transitions. [2023-12-21 11:24:39,437 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) [2023-12-21 11:24:39,437 INFO L276 IsEmpty]: Start isEmpty. Operand 12101 states and 15465 transitions. [2023-12-21 11:24:39,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2023-12-21 11:24:39,442 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:24:39,442 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] [2023-12-21 11:24:39,464 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-12-21 11:24:39,647 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 [2023-12-21 11:24:39,648 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:24:39,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:24:39,648 INFO L85 PathProgramCache]: Analyzing trace with hash -519257889, now seen corresponding path program 1 times [2023-12-21 11:24:39,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:24:39,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920094498] [2023-12-21 11:24:39,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:24:39,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:24:39,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:39,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:24:39,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:39,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-21 11:24:39,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:39,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-21 11:24:39,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:39,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-21 11:24:39,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:39,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-21 11:24:39,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:39,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-21 11:24:39,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:39,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-21 11:24:39,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:39,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-21 11:24:39,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:39,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-21 11:24:39,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:39,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-12-21 11:24:39,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:39,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-21 11:24:39,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:39,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-12-21 11:24:39,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:39,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-12-21 11:24:39,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:39,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-12-21 11:24:39,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:39,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-21 11:24:39,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:39,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2023-12-21 11:24:39,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:39,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2023-12-21 11:24:39,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:39,766 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2023-12-21 11:24:39,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:24:39,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920094498] [2023-12-21 11:24:39,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920094498] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:24:39,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:24:39,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 11:24:39,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636128804] [2023-12-21 11:24:39,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:24:39,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 11:24:39,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:24:39,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 11:24:39,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:24:39,768 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) [2023-12-21 11:24:42,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:24:42,491 INFO L93 Difference]: Finished difference Result 28827 states and 37481 transitions. [2023-12-21 11:24:42,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-21 11:24:42,491 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 [2023-12-21 11:24:42,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:24:42,532 INFO L225 Difference]: With dead ends: 28827 [2023-12-21 11:24:42,532 INFO L226 Difference]: Without dead ends: 19519 [2023-12-21 11:24:42,546 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 [2023-12-21 11:24:42,546 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 [2023-12-21 11:24:42,547 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] [2023-12-21 11:24:42,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19519 states. [2023-12-21 11:24:44,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19519 to 15544. [2023-12-21 11:24:44,888 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) [2023-12-21 11:24:44,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15544 states to 15544 states and 19764 transitions. [2023-12-21 11:24:44,917 INFO L78 Accepts]: Start accepts. Automaton has 15544 states and 19764 transitions. Word has length 166 [2023-12-21 11:24:44,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:24:44,918 INFO L495 AbstractCegarLoop]: Abstraction has 15544 states and 19764 transitions. [2023-12-21 11:24:44,918 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) [2023-12-21 11:24:44,918 INFO L276 IsEmpty]: Start isEmpty. Operand 15544 states and 19764 transitions. [2023-12-21 11:24:44,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2023-12-21 11:24:44,924 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:24:44,924 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] [2023-12-21 11:24:44,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2023-12-21 11:24:44,924 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:24:44,925 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:24:44,925 INFO L85 PathProgramCache]: Analyzing trace with hash -1777537642, now seen corresponding path program 1 times [2023-12-21 11:24:44,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:24:44,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149149474] [2023-12-21 11:24:44,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:24:44,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:24:44,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:45,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:24:45,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:45,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-21 11:24:45,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:45,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-21 11:24:45,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:45,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-21 11:24:45,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:45,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-21 11:24:45,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:45,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-21 11:24:45,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:45,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-21 11:24:45,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:45,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-21 11:24:45,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:45,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-21 11:24:45,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:45,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-12-21 11:24:45,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:45,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-12-21 11:24:45,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:45,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-21 11:24:45,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:45,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-12-21 11:24:45,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:45,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-12-21 11:24:45,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:45,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-12-21 11:24:45,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:45,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-12-21 11:24:45,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:45,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2023-12-21 11:24:45,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:45,087 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 19 proven. 11 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2023-12-21 11:24:45,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:24:45,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149149474] [2023-12-21 11:24:45,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149149474] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:24:45,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1364199732] [2023-12-21 11:24:45,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:24:45,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:24:45,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:24:45,100 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) [2023-12-21 11:24:45,101 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-21 11:24:45,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:45,265 INFO L262 TraceCheckSpWp]: Trace formula consists of 702 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-21 11:24:45,267 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:24:45,368 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 62 proven. 4 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-12-21 11:24:45,368 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:24:45,477 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 19 proven. 8 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2023-12-21 11:24:45,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1364199732] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:24:45,477 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:24:45,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2023-12-21 11:24:45,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182880141] [2023-12-21 11:24:45,477 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:24:45,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-21 11:24:45,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:24:45,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-21 11:24:45,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2023-12-21 11:24:45,479 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) [2023-12-21 11:24:49,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:24:49,595 INFO L93 Difference]: Finished difference Result 35055 states and 45783 transitions. [2023-12-21 11:24:49,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-21 11:24:49,595 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 [2023-12-21 11:24:49,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:24:49,647 INFO L225 Difference]: With dead ends: 35055 [2023-12-21 11:24:49,648 INFO L226 Difference]: Without dead ends: 19679 [2023-12-21 11:24:49,662 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 [2023-12-21 11:24:49,663 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 [2023-12-21 11:24:49,663 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] [2023-12-21 11:24:49,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19679 states. [2023-12-21 11:24:52,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19679 to 15828. [2023-12-21 11:24:52,450 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) [2023-12-21 11:24:52,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15828 states to 15828 states and 20077 transitions. [2023-12-21 11:24:52,489 INFO L78 Accepts]: Start accepts. Automaton has 15828 states and 20077 transitions. Word has length 167 [2023-12-21 11:24:52,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:24:52,490 INFO L495 AbstractCegarLoop]: Abstraction has 15828 states and 20077 transitions. [2023-12-21 11:24:52,490 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) [2023-12-21 11:24:52,490 INFO L276 IsEmpty]: Start isEmpty. Operand 15828 states and 20077 transitions. [2023-12-21 11:24:52,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2023-12-21 11:24:52,497 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:24:52,497 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] [2023-12-21 11:24:52,504 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-12-21 11:24:52,703 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 [2023-12-21 11:24:52,704 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:24:52,704 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:24:52,704 INFO L85 PathProgramCache]: Analyzing trace with hash 303803725, now seen corresponding path program 1 times [2023-12-21 11:24:52,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:24:52,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431481208] [2023-12-21 11:24:52,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:24:52,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:24:52,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:53,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:24:53,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:53,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-21 11:24:53,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:53,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-21 11:24:53,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:53,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-21 11:24:53,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:53,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-21 11:24:53,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:53,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-21 11:24:53,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:53,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 11:24:53,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:53,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-21 11:24:53,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:53,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-21 11:24:53,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:53,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 11:24:53,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:53,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-12-21 11:24:53,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:53,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-12-21 11:24:53,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:53,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-12-21 11:24:53,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:53,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2023-12-21 11:24:53,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:53,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2023-12-21 11:24:53,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:53,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-21 11:24:53,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:53,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2023-12-21 11:24:53,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:53,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2023-12-21 11:24:53,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:53,219 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 29 proven. 3 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2023-12-21 11:24:53,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:24:53,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431481208] [2023-12-21 11:24:53,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431481208] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:24:53,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [348798392] [2023-12-21 11:24:53,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:24:53,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:24:53,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:24:53,241 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) [2023-12-21 11:24:53,269 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-21 11:24:53,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:24:53,419 INFO L262 TraceCheckSpWp]: Trace formula consists of 720 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-21 11:24:53,422 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:24:53,540 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2023-12-21 11:24:53,540 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 11:24:53,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [348798392] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:24:53,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 11:24:53,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2023-12-21 11:24:53,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2883703] [2023-12-21 11:24:53,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:24:53,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 11:24:53,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:24:53,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 11:24:53,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2023-12-21 11:24:53,541 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) [2023-12-21 11:24:56,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:24:56,926 INFO L93 Difference]: Finished difference Result 34196 states and 44353 transitions. [2023-12-21 11:24:56,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 11:24:56,927 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 [2023-12-21 11:24:56,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:24:56,969 INFO L225 Difference]: With dead ends: 34196 [2023-12-21 11:24:56,970 INFO L226 Difference]: Without dead ends: 18753 [2023-12-21 11:24:56,986 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 [2023-12-21 11:24:56,987 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 [2023-12-21 11:24:56,987 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] [2023-12-21 11:24:56,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18753 states. [2023-12-21 11:24:59,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18753 to 15828. [2023-12-21 11:24:59,574 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) [2023-12-21 11:24:59,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15828 states to 15828 states and 19989 transitions. [2023-12-21 11:24:59,606 INFO L78 Accepts]: Start accepts. Automaton has 15828 states and 19989 transitions. Word has length 176 [2023-12-21 11:24:59,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:24:59,607 INFO L495 AbstractCegarLoop]: Abstraction has 15828 states and 19989 transitions. [2023-12-21 11:24:59,607 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) [2023-12-21 11:24:59,607 INFO L276 IsEmpty]: Start isEmpty. Operand 15828 states and 19989 transitions. [2023-12-21 11:24:59,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2023-12-21 11:24:59,613 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:24:59,613 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] [2023-12-21 11:24:59,629 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-21 11:24:59,819 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 [2023-12-21 11:24:59,819 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:24:59,820 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:24:59,820 INFO L85 PathProgramCache]: Analyzing trace with hash -611892066, now seen corresponding path program 1 times [2023-12-21 11:24:59,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:24:59,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758695565] [2023-12-21 11:24:59,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:24:59,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:24:59,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:00,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:25:00,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:00,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-21 11:25:00,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:00,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-21 11:25:00,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:00,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-21 11:25:00,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:00,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-21 11:25:00,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:00,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 11:25:00,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:00,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-21 11:25:00,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:00,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-21 11:25:00,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:00,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-21 11:25:00,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:00,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-21 11:25:00,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:00,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 11:25:00,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:00,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-21 11:25:00,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:00,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-12-21 11:25:00,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:00,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2023-12-21 11:25:00,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:00,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2023-12-21 11:25:00,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:00,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2023-12-21 11:25:00,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:00,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2023-12-21 11:25:00,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:00,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2023-12-21 11:25:00,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:00,086 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 19 proven. 22 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2023-12-21 11:25:00,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:25:00,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758695565] [2023-12-21 11:25:00,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758695565] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:25:00,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1209539733] [2023-12-21 11:25:00,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:25:00,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:25:00,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:25:00,105 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) [2023-12-21 11:25:00,133 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-21 11:25:00,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:00,257 INFO L262 TraceCheckSpWp]: Trace formula consists of 726 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-21 11:25:00,259 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:25:00,438 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 60 proven. 56 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-12-21 11:25:00,438 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:25:00,612 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 19 proven. 22 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2023-12-21 11:25:00,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1209539733] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:25:00,612 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:25:00,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 12 [2023-12-21 11:25:00,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532386408] [2023-12-21 11:25:00,612 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:25:00,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-21 11:25:00,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:25:00,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-21 11:25:00,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-12-21 11:25:00,614 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) [2023-12-21 11:25:03,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:25:03,760 INFO L93 Difference]: Finished difference Result 26121 states and 33228 transitions. [2023-12-21 11:25:03,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-21 11:25:03,760 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 [2023-12-21 11:25:03,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:25:03,798 INFO L225 Difference]: With dead ends: 26121 [2023-12-21 11:25:03,799 INFO L226 Difference]: Without dead ends: 16394 [2023-12-21 11:25:03,814 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 [2023-12-21 11:25:03,814 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, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 11:25:03,814 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [632 Valid, 3367 Invalid, 815 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 731 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 11:25:03,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16394 states. [2023-12-21 11:25:06,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16394 to 15828. [2023-12-21 11:25:06,324 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) [2023-12-21 11:25:06,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15828 states to 15828 states and 19954 transitions. [2023-12-21 11:25:06,355 INFO L78 Accepts]: Start accepts. Automaton has 15828 states and 19954 transitions. Word has length 180 [2023-12-21 11:25:06,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:25:06,355 INFO L495 AbstractCegarLoop]: Abstraction has 15828 states and 19954 transitions. [2023-12-21 11:25:06,355 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) [2023-12-21 11:25:06,355 INFO L276 IsEmpty]: Start isEmpty. Operand 15828 states and 19954 transitions. [2023-12-21 11:25:06,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2023-12-21 11:25:06,361 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:25:06,361 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] [2023-12-21 11:25:06,388 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-12-21 11:25:06,567 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 [2023-12-21 11:25:06,568 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:25:06,568 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:25:06,568 INFO L85 PathProgramCache]: Analyzing trace with hash 423620756, now seen corresponding path program 1 times [2023-12-21 11:25:06,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:25:06,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598654114] [2023-12-21 11:25:06,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:25:06,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:25:06,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:06,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:25:06,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:06,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-21 11:25:06,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:06,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-21 11:25:06,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:06,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-21 11:25:06,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:06,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-21 11:25:06,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:06,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 11:25:06,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:06,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-21 11:25:06,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:06,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-21 11:25:06,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:06,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-21 11:25:06,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:06,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-21 11:25:06,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:06,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 11:25:06,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:06,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-21 11:25:06,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:06,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-12-21 11:25:06,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:06,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2023-12-21 11:25:06,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:06,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2023-12-21 11:25:06,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:06,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2023-12-21 11:25:06,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:06,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2023-12-21 11:25:06,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:06,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2023-12-21 11:25:06,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:06,776 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2023-12-21 11:25:06,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:25:06,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598654114] [2023-12-21 11:25:06,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598654114] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:25:06,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:25:06,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 11:25:06,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120878657] [2023-12-21 11:25:06,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:25:06,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 11:25:06,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:25:06,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 11:25:06,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 11:25:06,778 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) [2023-12-21 11:25:09,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:25:09,862 INFO L93 Difference]: Finished difference Result 26870 states and 34611 transitions. [2023-12-21 11:25:09,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 11:25:09,863 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 [2023-12-21 11:25:09,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:25:09,898 INFO L225 Difference]: With dead ends: 26870 [2023-12-21 11:25:09,898 INFO L226 Difference]: Without dead ends: 17228 [2023-12-21 11:25:09,912 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 [2023-12-21 11:25:09,914 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 [2023-12-21 11:25:09,914 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] [2023-12-21 11:25:09,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17228 states. [2023-12-21 11:25:12,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17228 to 15821. [2023-12-21 11:25:12,439 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) [2023-12-21 11:25:12,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15821 states to 15821 states and 19933 transitions. [2023-12-21 11:25:12,472 INFO L78 Accepts]: Start accepts. Automaton has 15821 states and 19933 transitions. Word has length 180 [2023-12-21 11:25:12,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:25:12,472 INFO L495 AbstractCegarLoop]: Abstraction has 15821 states and 19933 transitions. [2023-12-21 11:25:12,473 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) [2023-12-21 11:25:12,473 INFO L276 IsEmpty]: Start isEmpty. Operand 15821 states and 19933 transitions. [2023-12-21 11:25:12,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2023-12-21 11:25:12,478 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:25:12,478 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] [2023-12-21 11:25:12,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2023-12-21 11:25:12,479 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:25:12,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:25:12,479 INFO L85 PathProgramCache]: Analyzing trace with hash 1239355003, now seen corresponding path program 1 times [2023-12-21 11:25:12,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:25:12,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843646635] [2023-12-21 11:25:12,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:25:12,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:25:12,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:12,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:25:12,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:12,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-21 11:25:12,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:12,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-21 11:25:12,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:12,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-21 11:25:12,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:12,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-21 11:25:12,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:12,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 11:25:12,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:12,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-21 11:25:12,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:12,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-21 11:25:12,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:12,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-21 11:25:12,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:12,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-21 11:25:12,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:12,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 11:25:12,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:12,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-12-21 11:25:12,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:12,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-12-21 11:25:12,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:12,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-21 11:25:12,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:12,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2023-12-21 11:25:12,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:12,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2023-12-21 11:25:12,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:12,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2023-12-21 11:25:12,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:12,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2023-12-21 11:25:12,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:12,549 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2023-12-21 11:25:12,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:25:12,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843646635] [2023-12-21 11:25:12,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843646635] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:25:12,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:25:12,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 11:25:12,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72095979] [2023-12-21 11:25:12,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:25:12,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 11:25:12,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:25:12,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 11:25:12,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 11:25:12,550 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) [2023-12-21 11:25:15,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:25:15,140 INFO L93 Difference]: Finished difference Result 26783 states and 34141 transitions. [2023-12-21 11:25:15,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 11:25:15,140 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 [2023-12-21 11:25:15,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:25:15,173 INFO L225 Difference]: With dead ends: 26783 [2023-12-21 11:25:15,173 INFO L226 Difference]: Without dead ends: 17114 [2023-12-21 11:25:15,184 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 [2023-12-21 11:25:15,186 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 [2023-12-21 11:25:15,186 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] [2023-12-21 11:25:15,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17114 states. [2023-12-21 11:25:17,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17114 to 16456. [2023-12-21 11:25:17,808 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) [2023-12-21 11:25:17,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16456 states to 16456 states and 20737 transitions. [2023-12-21 11:25:17,841 INFO L78 Accepts]: Start accepts. Automaton has 16456 states and 20737 transitions. Word has length 182 [2023-12-21 11:25:17,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:25:17,841 INFO L495 AbstractCegarLoop]: Abstraction has 16456 states and 20737 transitions. [2023-12-21 11:25:17,841 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) [2023-12-21 11:25:17,841 INFO L276 IsEmpty]: Start isEmpty. Operand 16456 states and 20737 transitions. [2023-12-21 11:25:17,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2023-12-21 11:25:17,846 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:25:17,847 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] [2023-12-21 11:25:17,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2023-12-21 11:25:17,847 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:25:17,847 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:25:17,847 INFO L85 PathProgramCache]: Analyzing trace with hash -1976028611, now seen corresponding path program 1 times [2023-12-21 11:25:17,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:25:17,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626403136] [2023-12-21 11:25:17,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:25:17,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:25:17,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:18,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:25:18,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:18,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-21 11:25:18,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:18,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-21 11:25:18,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:18,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-21 11:25:18,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:18,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-21 11:25:18,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:18,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-21 11:25:18,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:18,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 11:25:18,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:18,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-21 11:25:18,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:18,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-21 11:25:18,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:18,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 11:25:18,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:18,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-12-21 11:25:18,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:18,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-12-21 11:25:18,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:18,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-12-21 11:25:18,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:18,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2023-12-21 11:25:18,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:18,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2023-12-21 11:25:18,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:18,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-21 11:25:18,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:18,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2023-12-21 11:25:18,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:18,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2023-12-21 11:25:18,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:18,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2023-12-21 11:25:18,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:18,172 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 29 proven. 3 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2023-12-21 11:25:18,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:25:18,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626403136] [2023-12-21 11:25:18,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626403136] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:25:18,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [294694744] [2023-12-21 11:25:18,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:25:18,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:25:18,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:25:18,174 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) [2023-12-21 11:25:18,176 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-21 11:25:18,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:18,333 INFO L262 TraceCheckSpWp]: Trace formula consists of 738 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-21 11:25:18,335 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:25:18,451 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 90 proven. 4 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-12-21 11:25:18,451 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:25:18,568 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 21 proven. 4 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2023-12-21 11:25:18,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [294694744] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:25:18,568 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:25:18,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 15 [2023-12-21 11:25:18,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674899410] [2023-12-21 11:25:18,568 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:25:18,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-21 11:25:18,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:25:18,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-21 11:25:18,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2023-12-21 11:25:18,570 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) [2023-12-21 11:25:23,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:25:23,382 INFO L93 Difference]: Finished difference Result 36324 states and 46833 transitions. [2023-12-21 11:25:23,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-12-21 11:25:23,383 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 [2023-12-21 11:25:23,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:25:23,425 INFO L225 Difference]: With dead ends: 36324 [2023-12-21 11:25:23,425 INFO L226 Difference]: Without dead ends: 20342 [2023-12-21 11:25:23,440 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 [2023-12-21 11:25:23,440 INFO L413 NwaCegarLoop]: 453 mSDtfsCounter, 957 mSDsluCounter, 4119 mSDsCounter, 0 mSdLazyCounter, 2009 mSolverCounterSat, 309 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s 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 [2023-12-21 11:25:23,441 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] [2023-12-21 11:25:23,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20342 states. [2023-12-21 11:25:26,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20342 to 16664. [2023-12-21 11:25:26,229 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) [2023-12-21 11:25:26,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16664 states to 16664 states and 20990 transitions. [2023-12-21 11:25:26,260 INFO L78 Accepts]: Start accepts. Automaton has 16664 states and 20990 transitions. Word has length 184 [2023-12-21 11:25:26,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:25:26,262 INFO L495 AbstractCegarLoop]: Abstraction has 16664 states and 20990 transitions. [2023-12-21 11:25:26,262 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) [2023-12-21 11:25:26,262 INFO L276 IsEmpty]: Start isEmpty. Operand 16664 states and 20990 transitions. [2023-12-21 11:25:26,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2023-12-21 11:25:26,267 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:25:26,267 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] [2023-12-21 11:25:26,273 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-21 11:25:26,472 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 [2023-12-21 11:25:26,473 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:25:26,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:25:26,473 INFO L85 PathProgramCache]: Analyzing trace with hash -729153234, now seen corresponding path program 1 times [2023-12-21 11:25:26,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:25:26,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032997546] [2023-12-21 11:25:26,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:25:26,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:25:26,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:26,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:25:26,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:26,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-21 11:25:26,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:26,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-21 11:25:26,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:26,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-21 11:25:26,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:26,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-21 11:25:26,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:26,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 11:25:26,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:26,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-21 11:25:26,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:26,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-21 11:25:26,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:26,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-21 11:25:26,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:26,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-21 11:25:26,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:26,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 11:25:26,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:26,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-21 11:25:26,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:26,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-12-21 11:25:26,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:26,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2023-12-21 11:25:26,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:26,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2023-12-21 11:25:26,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:26,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2023-12-21 11:25:26,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:26,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2023-12-21 11:25:26,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:26,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2023-12-21 11:25:26,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:26,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2023-12-21 11:25:26,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:26,753 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 11 proven. 24 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2023-12-21 11:25:26,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:25:26,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032997546] [2023-12-21 11:25:26,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032997546] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:25:26,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2037930616] [2023-12-21 11:25:26,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:25:26,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:25:26,754 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:25:26,754 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) [2023-12-21 11:25:26,777 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-21 11:25:26,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:26,902 INFO L262 TraceCheckSpWp]: Trace formula consists of 742 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-21 11:25:26,905 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:25:27,109 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 40 proven. 83 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-12-21 11:25:27,109 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:25:27,254 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 18 proven. 23 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2023-12-21 11:25:27,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2037930616] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:25:27,255 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:25:27,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 17 [2023-12-21 11:25:27,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472431950] [2023-12-21 11:25:27,255 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:25:27,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-21 11:25:27,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:25:27,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-21 11:25:27,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2023-12-21 11:25:27,256 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) [2023-12-21 11:25:33,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:25:33,855 INFO L93 Difference]: Finished difference Result 35037 states and 45117 transitions. [2023-12-21 11:25:33,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2023-12-21 11:25:33,855 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 [2023-12-21 11:25:33,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:25:33,901 INFO L225 Difference]: With dead ends: 35037 [2023-12-21 11:25:33,901 INFO L226 Difference]: Without dead ends: 24189 [2023-12-21 11:25:33,914 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 [2023-12-21 11:25:33,915 INFO L413 NwaCegarLoop]: 560 mSDtfsCounter, 2238 mSDsluCounter, 5027 mSDsCounter, 0 mSdLazyCounter, 1491 mSolverCounterSat, 955 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s 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, 1.3s IncrementalHoareTripleChecker+Time [2023-12-21 11:25:33,915 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2238 Valid, 5587 Invalid, 2446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [955 Valid, 1491 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-21 11:25:33,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24189 states. [2023-12-21 11:25:37,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24189 to 18272. [2023-12-21 11:25:37,123 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) [2023-12-21 11:25:37,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18272 states to 18272 states and 22861 transitions. [2023-12-21 11:25:37,167 INFO L78 Accepts]: Start accepts. Automaton has 18272 states and 22861 transitions. Word has length 188 [2023-12-21 11:25:37,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:25:37,167 INFO L495 AbstractCegarLoop]: Abstraction has 18272 states and 22861 transitions. [2023-12-21 11:25:37,167 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) [2023-12-21 11:25:37,167 INFO L276 IsEmpty]: Start isEmpty. Operand 18272 states and 22861 transitions. [2023-12-21 11:25:37,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2023-12-21 11:25:37,173 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:25:37,173 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] [2023-12-21 11:25:37,181 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-21 11:25:37,379 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 [2023-12-21 11:25:37,379 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:25:37,379 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:25:37,379 INFO L85 PathProgramCache]: Analyzing trace with hash 814379766, now seen corresponding path program 1 times [2023-12-21 11:25:37,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:25:37,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603589036] [2023-12-21 11:25:37,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:25:37,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:25:37,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:37,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:25:37,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:37,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-21 11:25:37,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:37,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-21 11:25:37,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:37,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-21 11:25:37,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:37,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-21 11:25:37,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:37,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-21 11:25:37,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:37,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 11:25:37,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:37,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-21 11:25:37,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:37,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-12-21 11:25:37,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:37,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-21 11:25:37,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:37,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-12-21 11:25:37,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:37,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-12-21 11:25:37,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:37,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-21 11:25:37,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:37,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-12-21 11:25:37,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:37,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-12-21 11:25:37,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:37,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-21 11:25:37,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:37,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2023-12-21 11:25:37,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:37,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2023-12-21 11:25:37,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:37,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2023-12-21 11:25:37,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:37,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2023-12-21 11:25:37,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:37,710 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 26 proven. 4 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2023-12-21 11:25:37,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:25:37,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603589036] [2023-12-21 11:25:37,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603589036] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:25:37,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [810454381] [2023-12-21 11:25:37,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:25:37,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:25:37,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:25:37,711 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) [2023-12-21 11:25:37,713 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-21 11:25:37,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:37,877 INFO L262 TraceCheckSpWp]: Trace formula consists of 756 conjuncts, 49 conjunts are in the unsatisfiable core [2023-12-21 11:25:37,881 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:25:38,407 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 107 proven. 12 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2023-12-21 11:25:38,407 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:25:38,870 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 26 proven. 10 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2023-12-21 11:25:38,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [810454381] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:25:38,871 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:25:38,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 13] total 28 [2023-12-21 11:25:38,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248455836] [2023-12-21 11:25:38,871 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:25:38,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-21 11:25:38,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:25:38,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-21 11:25:38,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=661, Unknown=0, NotChecked=0, Total=756 [2023-12-21 11:25:38,872 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) [2023-12-21 11:25:45,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:25:45,121 INFO L93 Difference]: Finished difference Result 35305 states and 44383 transitions. [2023-12-21 11:25:45,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2023-12-21 11:25:45,121 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 [2023-12-21 11:25:45,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:25:45,176 INFO L225 Difference]: With dead ends: 35305 [2023-12-21 11:25:45,176 INFO L226 Difference]: Without dead ends: 18967 [2023-12-21 11:25:45,201 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 [2023-12-21 11:25:45,203 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, 1.7s IncrementalHoareTripleChecker+Time [2023-12-21 11:25:45,203 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1583 Valid, 6843 Invalid, 4642 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [463 Valid, 4179 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-21 11:25:45,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18967 states. [2023-12-21 11:25:48,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18967 to 18599. [2023-12-21 11:25:48,617 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) [2023-12-21 11:25:48,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18599 states to 18599 states and 23300 transitions. [2023-12-21 11:25:48,653 INFO L78 Accepts]: Start accepts. Automaton has 18599 states and 23300 transitions. Word has length 192 [2023-12-21 11:25:48,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:25:48,653 INFO L495 AbstractCegarLoop]: Abstraction has 18599 states and 23300 transitions. [2023-12-21 11:25:48,653 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) [2023-12-21 11:25:48,653 INFO L276 IsEmpty]: Start isEmpty. Operand 18599 states and 23300 transitions. [2023-12-21 11:25:48,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2023-12-21 11:25:48,657 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:25:48,657 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] [2023-12-21 11:25:48,663 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-21 11:25:48,863 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 [2023-12-21 11:25:48,863 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:25:48,864 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:25:48,864 INFO L85 PathProgramCache]: Analyzing trace with hash 446617501, now seen corresponding path program 1 times [2023-12-21 11:25:48,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:25:48,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128430393] [2023-12-21 11:25:48,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:25:48,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:25:48,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:49,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:25:49,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:49,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-21 11:25:49,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:49,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-21 11:25:49,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:49,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-21 11:25:49,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:49,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-21 11:25:49,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:49,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-21 11:25:49,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:49,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 11:25:49,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:49,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-21 11:25:49,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:49,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-12-21 11:25:49,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:49,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-21 11:25:49,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:49,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-12-21 11:25:49,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:49,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-12-21 11:25:49,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:49,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-21 11:25:49,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:49,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-12-21 11:25:49,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:49,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2023-12-21 11:25:49,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:49,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2023-12-21 11:25:49,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:49,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-21 11:25:49,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:49,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2023-12-21 11:25:49,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:49,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2023-12-21 11:25:49,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:49,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2023-12-21 11:25:49,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:49,147 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 22 proven. 10 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2023-12-21 11:25:49,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:25:49,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128430393] [2023-12-21 11:25:49,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128430393] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:25:49,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [664573895] [2023-12-21 11:25:49,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:25:49,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:25:49,147 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:25:49,148 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) [2023-12-21 11:25:49,152 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-21 11:25:49,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:49,296 INFO L262 TraceCheckSpWp]: Trace formula consists of 758 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-21 11:25:49,298 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:25:49,742 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 103 proven. 18 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2023-12-21 11:25:49,743 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:25:50,095 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 19 proven. 13 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2023-12-21 11:25:50,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [664573895] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:25:50,095 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:25:50,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 23 [2023-12-21 11:25:50,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862912062] [2023-12-21 11:25:50,097 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:25:50,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-21 11:25:50,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:25:50,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-21 11:25:50,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=404, Unknown=0, NotChecked=0, Total=506 [2023-12-21 11:25:50,099 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) [2023-12-21 11:25:55,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:25:55,387 INFO L93 Difference]: Finished difference Result 41394 states and 52125 transitions. [2023-12-21 11:25:55,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-12-21 11:25:55,388 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 [2023-12-21 11:25:55,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:25:55,438 INFO L225 Difference]: With dead ends: 41394 [2023-12-21 11:25:55,438 INFO L226 Difference]: Without dead ends: 23166 [2023-12-21 11:25:55,455 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 [2023-12-21 11:25:55,455 INFO L413 NwaCegarLoop]: 366 mSDtfsCounter, 1102 mSDsluCounter, 2758 mSDsCounter, 0 mSdLazyCounter, 2373 mSolverCounterSat, 213 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s 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, 0.9s IncrementalHoareTripleChecker+Time [2023-12-21 11:25:55,456 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1102 Valid, 3124 Invalid, 2586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [213 Valid, 2373 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-21 11:25:55,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23166 states. [2023-12-21 11:25:59,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23166 to 20937. [2023-12-21 11:25:59,326 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) [2023-12-21 11:25:59,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20937 states to 20937 states and 26392 transitions. [2023-12-21 11:25:59,374 INFO L78 Accepts]: Start accepts. Automaton has 20937 states and 26392 transitions. Word has length 194 [2023-12-21 11:25:59,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:25:59,374 INFO L495 AbstractCegarLoop]: Abstraction has 20937 states and 26392 transitions. [2023-12-21 11:25:59,374 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) [2023-12-21 11:25:59,374 INFO L276 IsEmpty]: Start isEmpty. Operand 20937 states and 26392 transitions. [2023-12-21 11:25:59,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2023-12-21 11:25:59,378 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:25:59,378 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] [2023-12-21 11:25:59,384 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-12-21 11:25:59,583 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 [2023-12-21 11:25:59,584 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:25:59,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:25:59,584 INFO L85 PathProgramCache]: Analyzing trace with hash 1585313194, now seen corresponding path program 1 times [2023-12-21 11:25:59,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:25:59,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425119626] [2023-12-21 11:25:59,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:25:59,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:25:59,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:59,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:25:59,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:59,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-21 11:25:59,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:59,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-21 11:25:59,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:59,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-21 11:25:59,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:59,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-21 11:25:59,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:59,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-21 11:25:59,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:59,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 11:25:59,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:59,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-21 11:25:59,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:59,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-12-21 11:25:59,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:59,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-21 11:25:59,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:59,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-12-21 11:25:59,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:59,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-12-21 11:25:59,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:59,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-21 11:25:59,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:59,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-12-21 11:25:59,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:59,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2023-12-21 11:25:59,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:59,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2023-12-21 11:25:59,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:59,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2023-12-21 11:25:59,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:59,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2023-12-21 11:25:59,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:59,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2023-12-21 11:25:59,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:59,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2023-12-21 11:25:59,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:59,826 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 18 proven. 22 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2023-12-21 11:25:59,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:25:59,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425119626] [2023-12-21 11:25:59,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425119626] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:25:59,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [147374763] [2023-12-21 11:25:59,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:25:59,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:25:59,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:25:59,842 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) [2023-12-21 11:25:59,868 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-21 11:25:59,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:25:59,992 INFO L262 TraceCheckSpWp]: Trace formula consists of 776 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-21 11:25:59,995 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:26:00,178 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 120 proven. 31 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-12-21 11:26:00,178 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:26:00,460 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 38 proven. 8 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2023-12-21 11:26:00,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [147374763] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:26:00,461 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:26:00,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 10] total 16 [2023-12-21 11:26:00,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091856405] [2023-12-21 11:26:00,461 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:26:00,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-21 11:26:00,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:26:00,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-21 11:26:00,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2023-12-21 11:26:00,462 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) [2023-12-21 11:26:08,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:26:08,157 INFO L93 Difference]: Finished difference Result 52211 states and 67417 transitions. [2023-12-21 11:26:08,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-12-21 11:26:08,157 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 [2023-12-21 11:26:08,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:26:08,241 INFO L225 Difference]: With dead ends: 52211 [2023-12-21 11:26:08,242 INFO L226 Difference]: Without dead ends: 32572 [2023-12-21 11:26:08,268 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 [2023-12-21 11:26:08,268 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 [2023-12-21 11:26:08,268 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] [2023-12-21 11:26:08,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32572 states. [2023-12-21 11:26:12,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32572 to 21797. [2023-12-21 11:26:12,890 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) [2023-12-21 11:26:12,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21797 states to 21797 states and 27454 transitions. [2023-12-21 11:26:12,940 INFO L78 Accepts]: Start accepts. Automaton has 21797 states and 27454 transitions. Word has length 196 [2023-12-21 11:26:12,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:26:12,941 INFO L495 AbstractCegarLoop]: Abstraction has 21797 states and 27454 transitions. [2023-12-21 11:26:12,941 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) [2023-12-21 11:26:12,941 INFO L276 IsEmpty]: Start isEmpty. Operand 21797 states and 27454 transitions. [2023-12-21 11:26:12,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2023-12-21 11:26:12,945 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:26:12,945 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] [2023-12-21 11:26:12,951 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-12-21 11:26:13,148 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 [2023-12-21 11:26:13,150 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:26:13,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:26:13,150 INFO L85 PathProgramCache]: Analyzing trace with hash 1548404857, now seen corresponding path program 1 times [2023-12-21 11:26:13,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:26:13,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724610702] [2023-12-21 11:26:13,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:26:13,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:26:13,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:13,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:26:13,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:13,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-21 11:26:13,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:13,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-21 11:26:13,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:13,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-21 11:26:13,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:13,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-21 11:26:13,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:13,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-21 11:26:13,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:13,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 11:26:13,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:13,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-21 11:26:13,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:13,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-12-21 11:26:13,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:13,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-21 11:26:13,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:13,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-12-21 11:26:13,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:13,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-12-21 11:26:13,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:13,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-21 11:26:13,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:13,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-12-21 11:26:13,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:13,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-21 11:26:13,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:13,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-12-21 11:26:13,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:13,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2023-12-21 11:26:13,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:13,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2023-12-21 11:26:13,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:13,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2023-12-21 11:26:13,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:13,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2023-12-21 11:26:13,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:13,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2023-12-21 11:26:13,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:13,615 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 4 proven. 25 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2023-12-21 11:26:13,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:26:13,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724610702] [2023-12-21 11:26:13,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724610702] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:26:13,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [115844955] [2023-12-21 11:26:13,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:26:13,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:26:13,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:26:13,617 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) [2023-12-21 11:26:13,641 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-21 11:26:13,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:13,779 INFO L262 TraceCheckSpWp]: Trace formula consists of 774 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-21 11:26:13,783 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:26:14,034 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 4 proven. 130 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-12-21 11:26:14,034 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:26:14,280 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 4 proven. 25 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2023-12-21 11:26:14,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [115844955] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:26:14,280 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:26:14,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12, 9] total 18 [2023-12-21 11:26:14,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703409566] [2023-12-21 11:26:14,281 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:26:14,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-21 11:26:14,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:26:14,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-21 11:26:14,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2023-12-21 11:26:14,282 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) [2023-12-21 11:26:19,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:26:19,617 INFO L93 Difference]: Finished difference Result 43333 states and 54976 transitions. [2023-12-21 11:26:19,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-21 11:26:19,618 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 [2023-12-21 11:26:19,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:26:19,669 INFO L225 Difference]: With dead ends: 43333 [2023-12-21 11:26:19,670 INFO L226 Difference]: Without dead ends: 23835 [2023-12-21 11:26:19,692 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 [2023-12-21 11:26:19,693 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 [2023-12-21 11:26:19,693 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] [2023-12-21 11:26:19,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23835 states. [2023-12-21 11:26:24,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23835 to 23198. [2023-12-21 11:26:24,650 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) [2023-12-21 11:26:24,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23198 states to 23198 states and 29246 transitions. [2023-12-21 11:26:24,699 INFO L78 Accepts]: Start accepts. Automaton has 23198 states and 29246 transitions. Word has length 199 [2023-12-21 11:26:24,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:26:24,700 INFO L495 AbstractCegarLoop]: Abstraction has 23198 states and 29246 transitions. [2023-12-21 11:26:24,700 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) [2023-12-21 11:26:24,700 INFO L276 IsEmpty]: Start isEmpty. Operand 23198 states and 29246 transitions. [2023-12-21 11:26:24,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2023-12-21 11:26:24,704 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:26:24,704 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] [2023-12-21 11:26:24,711 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-12-21 11:26:24,911 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 [2023-12-21 11:26:24,911 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:26:24,911 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:26:24,911 INFO L85 PathProgramCache]: Analyzing trace with hash 105326699, now seen corresponding path program 1 times [2023-12-21 11:26:24,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:26:24,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592578439] [2023-12-21 11:26:24,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:26:24,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:26:24,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:25,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:26:25,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:25,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-21 11:26:25,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:25,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-21 11:26:25,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:25,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-21 11:26:25,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:25,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-21 11:26:25,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:25,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-21 11:26:25,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:25,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 11:26:25,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:25,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-21 11:26:25,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:25,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-12-21 11:26:25,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:25,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-21 11:26:25,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:25,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-12-21 11:26:25,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:25,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-12-21 11:26:25,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:25,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-21 11:26:25,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:25,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2023-12-21 11:26:25,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:25,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-21 11:26:25,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:25,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-12-21 11:26:25,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:25,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2023-12-21 11:26:25,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:25,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2023-12-21 11:26:25,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:25,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2023-12-21 11:26:25,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:25,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2023-12-21 11:26:25,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:25,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2023-12-21 11:26:25,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:25,117 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2023-12-21 11:26:25,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:26:25,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592578439] [2023-12-21 11:26:25,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592578439] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:26:25,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:26:25,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 11:26:25,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512959136] [2023-12-21 11:26:25,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:26:25,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 11:26:25,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:26:25,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 11:26:25,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-12-21 11:26:25,118 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) [2023-12-21 11:26:30,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:26:30,274 INFO L93 Difference]: Finished difference Result 43393 states and 55221 transitions. [2023-12-21 11:26:30,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 11:26:30,274 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 [2023-12-21 11:26:30,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:26:30,357 INFO L225 Difference]: With dead ends: 43393 [2023-12-21 11:26:30,357 INFO L226 Difference]: Without dead ends: 24042 [2023-12-21 11:26:30,561 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2023-12-21 11:26:30,561 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 [2023-12-21 11:26:30,561 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] [2023-12-21 11:26:30,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24042 states. [2023-12-21 11:26:35,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24042 to 22867. [2023-12-21 11:26:35,390 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) [2023-12-21 11:26:35,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22867 states to 22867 states and 28808 transitions. [2023-12-21 11:26:35,435 INFO L78 Accepts]: Start accepts. Automaton has 22867 states and 28808 transitions. Word has length 199 [2023-12-21 11:26:35,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:26:35,436 INFO L495 AbstractCegarLoop]: Abstraction has 22867 states and 28808 transitions. [2023-12-21 11:26:35,436 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) [2023-12-21 11:26:35,436 INFO L276 IsEmpty]: Start isEmpty. Operand 22867 states and 28808 transitions. [2023-12-21 11:26:35,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2023-12-21 11:26:35,515 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:26:35,515 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] [2023-12-21 11:26:35,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2023-12-21 11:26:35,515 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:26:35,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:26:35,515 INFO L85 PathProgramCache]: Analyzing trace with hash -1587671650, now seen corresponding path program 1 times [2023-12-21 11:26:35,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:26:35,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501911431] [2023-12-21 11:26:35,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:26:35,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:26:35,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:35,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:26:35,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:35,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-21 11:26:35,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:35,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-21 11:26:35,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:35,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-12-21 11:26:35,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:35,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-21 11:26:35,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:35,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-21 11:26:35,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:35,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-21 11:26:35,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:35,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-21 11:26:35,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:35,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-21 11:26:35,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:35,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-21 11:26:35,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:35,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-21 11:26:35,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:35,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-21 11:26:35,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:35,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-12-21 11:26:35,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:35,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2023-12-21 11:26:35,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:35,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2023-12-21 11:26:35,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:35,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-12-21 11:26:35,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:35,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2023-12-21 11:26:35,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:35,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2023-12-21 11:26:35,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:35,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2023-12-21 11:26:35,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:35,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2023-12-21 11:26:35,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:35,889 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 31 proven. 7 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2023-12-21 11:26:35,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:26:35,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501911431] [2023-12-21 11:26:35,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501911431] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:26:35,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [232259152] [2023-12-21 11:26:35,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:26:35,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:26:35,890 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:26:35,917 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) [2023-12-21 11:26:35,932 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-21 11:26:36,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:36,125 INFO L262 TraceCheckSpWp]: Trace formula consists of 807 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-21 11:26:36,128 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:26:36,507 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 121 proven. 7 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-12-21 11:26:36,508 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:26:36,791 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 35 proven. 3 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2023-12-21 11:26:36,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [232259152] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:26:36,791 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:26:36,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 8] total 22 [2023-12-21 11:26:36,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812225558] [2023-12-21 11:26:36,791 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:26:36,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-21 11:26:36,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:26:36,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-21 11:26:36,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=379, Unknown=0, NotChecked=0, Total=462 [2023-12-21 11:26:36,793 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) [2023-12-21 11:26:44,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:26:44,518 INFO L93 Difference]: Finished difference Result 45221 states and 57357 transitions. [2023-12-21 11:26:44,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2023-12-21 11:26:44,519 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 [2023-12-21 11:26:44,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:26:44,584 INFO L225 Difference]: With dead ends: 45221 [2023-12-21 11:26:44,584 INFO L226 Difference]: Without dead ends: 25355 [2023-12-21 11:26:44,607 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 [2023-12-21 11:26:44,608 INFO L413 NwaCegarLoop]: 591 mSDtfsCounter, 1886 mSDsluCounter, 4663 mSDsCounter, 0 mSdLazyCounter, 3376 mSolverCounterSat, 562 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s 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, 1.6s IncrementalHoareTripleChecker+Time [2023-12-21 11:26:44,608 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1886 Valid, 5254 Invalid, 3938 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [562 Valid, 3376 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-21 11:26:44,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25355 states. [2023-12-21 11:26:49,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25355 to 24567. [2023-12-21 11:26:49,788 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) [2023-12-21 11:26:49,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24567 states to 24567 states and 31048 transitions. [2023-12-21 11:26:49,850 INFO L78 Accepts]: Start accepts. Automaton has 24567 states and 31048 transitions. Word has length 205 [2023-12-21 11:26:49,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:26:49,851 INFO L495 AbstractCegarLoop]: Abstraction has 24567 states and 31048 transitions. [2023-12-21 11:26:49,851 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) [2023-12-21 11:26:49,851 INFO L276 IsEmpty]: Start isEmpty. Operand 24567 states and 31048 transitions. [2023-12-21 11:26:49,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2023-12-21 11:26:49,856 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:26:49,856 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] [2023-12-21 11:26:49,866 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-12-21 11:26:50,066 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 [2023-12-21 11:26:50,066 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:26:50,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:26:50,067 INFO L85 PathProgramCache]: Analyzing trace with hash -1676142549, now seen corresponding path program 1 times [2023-12-21 11:26:50,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:26:50,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98829798] [2023-12-21 11:26:50,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:26:50,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:26:50,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:50,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:26:50,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:50,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-21 11:26:50,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:50,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-21 11:26:50,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:50,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-12-21 11:26:50,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:50,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-21 11:26:50,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:50,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-21 11:26:50,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:50,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-21 11:26:50,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:50,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-21 11:26:50,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:50,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-21 11:26:50,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:50,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-21 11:26:50,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:50,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-21 11:26:50,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:50,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-21 11:26:50,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:50,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-12-21 11:26:50,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:50,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2023-12-21 11:26:50,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:50,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2023-12-21 11:26:50,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:50,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2023-12-21 11:26:50,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:50,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2023-12-21 11:26:50,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:50,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2023-12-21 11:26:50,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:50,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2023-12-21 11:26:50,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:50,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2023-12-21 11:26:50,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:50,478 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 4 proven. 34 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2023-12-21 11:26:50,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:26:50,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98829798] [2023-12-21 11:26:50,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98829798] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:26:50,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [896295821] [2023-12-21 11:26:50,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:26:50,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:26:50,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:26:50,479 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) [2023-12-21 11:26:50,489 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-12-21 11:26:50,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:26:50,650 INFO L262 TraceCheckSpWp]: Trace formula consists of 806 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-21 11:26:50,653 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:26:50,870 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 4 proven. 124 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-12-21 11:26:50,870 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:26:51,117 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 4 proven. 34 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2023-12-21 11:26:51,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [896295821] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:26:51,117 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:26:51,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 9] total 22 [2023-12-21 11:26:51,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243884030] [2023-12-21 11:26:51,118 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:26:51,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-21 11:26:51,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:26:51,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-21 11:26:51,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=381, Unknown=0, NotChecked=0, Total=462 [2023-12-21 11:26:51,119 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) [2023-12-21 11:26:59,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:26:59,268 INFO L93 Difference]: Finished difference Result 55270 states and 70257 transitions. [2023-12-21 11:26:59,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-21 11:26:59,268 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 [2023-12-21 11:26:59,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:26:59,347 INFO L225 Difference]: With dead ends: 55270 [2023-12-21 11:26:59,348 INFO L226 Difference]: Without dead ends: 33659 [2023-12-21 11:26:59,375 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 [2023-12-21 11:26:59,376 INFO L413 NwaCegarLoop]: 352 mSDtfsCounter, 1439 mSDsluCounter, 2919 mSDsCounter, 0 mSdLazyCounter, 1475 mSolverCounterSat, 424 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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 [2023-12-21 11:26:59,376 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] [2023-12-21 11:26:59,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33659 states. [2023-12-21 11:27:06,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33659 to 32587. [2023-12-21 11:27:06,750 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) [2023-12-21 11:27:06,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32587 states to 32587 states and 41266 transitions. [2023-12-21 11:27:06,830 INFO L78 Accepts]: Start accepts. Automaton has 32587 states and 41266 transitions. Word has length 206 [2023-12-21 11:27:06,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:27:06,831 INFO L495 AbstractCegarLoop]: Abstraction has 32587 states and 41266 transitions. [2023-12-21 11:27:06,831 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) [2023-12-21 11:27:06,831 INFO L276 IsEmpty]: Start isEmpty. Operand 32587 states and 41266 transitions. [2023-12-21 11:27:06,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2023-12-21 11:27:06,836 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:27:06,836 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] [2023-12-21 11:27:06,842 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-12-21 11:27:07,042 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 [2023-12-21 11:27:07,042 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:27:07,042 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:27:07,043 INFO L85 PathProgramCache]: Analyzing trace with hash -183340016, now seen corresponding path program 1 times [2023-12-21 11:27:07,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:27:07,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134459960] [2023-12-21 11:27:07,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:27:07,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:27:07,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:07,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:27:07,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:07,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-21 11:27:07,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:07,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-21 11:27:07,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:07,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-12-21 11:27:07,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:07,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-21 11:27:07,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:07,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-21 11:27:07,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:07,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-21 11:27:07,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:07,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-21 11:27:07,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:07,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-21 11:27:07,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:07,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-21 11:27:07,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:07,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-21 11:27:07,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:07,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-21 11:27:07,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:07,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-12-21 11:27:07,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:07,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-12-21 11:27:07,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:07,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2023-12-21 11:27:07,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:07,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2023-12-21 11:27:07,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:07,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2023-12-21 11:27:07,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:07,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2023-12-21 11:27:07,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:07,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2023-12-21 11:27:07,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:07,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2023-12-21 11:27:07,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:07,433 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 22 proven. 18 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2023-12-21 11:27:07,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:27:07,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134459960] [2023-12-21 11:27:07,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134459960] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:27:07,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1267613804] [2023-12-21 11:27:07,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:27:07,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:27:07,434 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:27:07,435 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) [2023-12-21 11:27:07,457 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-12-21 11:27:07,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:07,628 INFO L262 TraceCheckSpWp]: Trace formula consists of 819 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-21 11:27:07,631 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:27:07,874 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 113 proven. 15 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-12-21 11:27:07,875 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:27:08,086 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 31 proven. 7 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2023-12-21 11:27:08,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1267613804] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:27:08,087 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:27:08,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 8] total 28 [2023-12-21 11:27:08,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615114090] [2023-12-21 11:27:08,087 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:27:08,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-21 11:27:08,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:27:08,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-21 11:27:08,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=675, Unknown=0, NotChecked=0, Total=756 [2023-12-21 11:27:08,089 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) [2023-12-21 11:27:18,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:27:18,559 INFO L93 Difference]: Finished difference Result 68466 states and 86867 transitions. [2023-12-21 11:27:18,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-12-21 11:27:18,559 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 [2023-12-21 11:27:18,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:27:18,647 INFO L225 Difference]: With dead ends: 68466 [2023-12-21 11:27:18,647 INFO L226 Difference]: Without dead ends: 39016 [2023-12-21 11:27:18,678 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 520 GetRequests, 448 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1339 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=878, Invalid=4524, Unknown=0, NotChecked=0, Total=5402 [2023-12-21 11:27:18,679 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 [2023-12-21 11:27:18,679 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] [2023-12-21 11:27:18,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39016 states. [2023-12-21 11:27:27,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39016 to 35268. [2023-12-21 11:27:27,188 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) [2023-12-21 11:27:27,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35268 states to 35268 states and 44629 transitions. [2023-12-21 11:27:27,262 INFO L78 Accepts]: Start accepts. Automaton has 35268 states and 44629 transitions. Word has length 208 [2023-12-21 11:27:27,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:27:27,263 INFO L495 AbstractCegarLoop]: Abstraction has 35268 states and 44629 transitions. [2023-12-21 11:27:27,263 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) [2023-12-21 11:27:27,263 INFO L276 IsEmpty]: Start isEmpty. Operand 35268 states and 44629 transitions. [2023-12-21 11:27:27,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2023-12-21 11:27:27,278 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:27:27,278 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] [2023-12-21 11:27:27,284 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2023-12-21 11:27:27,483 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 [2023-12-21 11:27:27,483 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:27:27,484 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:27:27,484 INFO L85 PathProgramCache]: Analyzing trace with hash -1718927262, now seen corresponding path program 1 times [2023-12-21 11:27:27,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:27:27,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739262893] [2023-12-21 11:27:27,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:27:27,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:27:27,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:27,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:27:27,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:27,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-21 11:27:27,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:27,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-21 11:27:27,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:27,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-21 11:27:27,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:27,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-21 11:27:27,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:27,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 11:27:27,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:27,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-21 11:27:27,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:27,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-21 11:27:27,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:27,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-21 11:27:27,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:27,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-21 11:27:27,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:27,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 11:27:27,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:27,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-21 11:27:27,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:27,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-12-21 11:27:27,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:27,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2023-12-21 11:27:27,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:27,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2023-12-21 11:27:27,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:27,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2023-12-21 11:27:27,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:27,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2023-12-21 11:27:27,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:27,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2023-12-21 11:27:27,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:27,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2023-12-21 11:27:27,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:27,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2023-12-21 11:27:27,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:27,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2023-12-21 11:27:27,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:27,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2023-12-21 11:27:27,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:27,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2023-12-21 11:27:27,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:27,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-12-21 11:27:27,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:27,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2023-12-21 11:27:27,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:27,650 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2023-12-21 11:27:27,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:27:27,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739262893] [2023-12-21 11:27:27,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739262893] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:27:27,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:27:27,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 11:27:27,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428349622] [2023-12-21 11:27:27,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:27:27,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 11:27:27,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:27:27,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 11:27:27,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 11:27:27,651 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) [2023-12-21 11:27:36,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:27:36,324 INFO L93 Difference]: Finished difference Result 68498 states and 87085 transitions. [2023-12-21 11:27:36,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 11:27:36,325 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 [2023-12-21 11:27:36,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:27:36,432 INFO L225 Difference]: With dead ends: 68498 [2023-12-21 11:27:36,432 INFO L226 Difference]: Without dead ends: 34762 [2023-12-21 11:27:36,467 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 [2023-12-21 11:27:36,467 INFO L413 NwaCegarLoop]: 231 mSDtfsCounter, 7 mSDsluCounter, 454 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 11:27:36,467 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 685 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 11:27:36,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34762 states. [2023-12-21 11:27:44,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34762 to 34762. [2023-12-21 11:27:44,733 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) [2023-12-21 11:27:44,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34762 states to 34762 states and 43203 transitions. [2023-12-21 11:27:44,805 INFO L78 Accepts]: Start accepts. Automaton has 34762 states and 43203 transitions. Word has length 247 [2023-12-21 11:27:44,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:27:44,805 INFO L495 AbstractCegarLoop]: Abstraction has 34762 states and 43203 transitions. [2023-12-21 11:27:44,805 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) [2023-12-21 11:27:44,806 INFO L276 IsEmpty]: Start isEmpty. Operand 34762 states and 43203 transitions. [2023-12-21 11:27:44,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2023-12-21 11:27:44,822 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:27:44,822 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] [2023-12-21 11:27:44,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2023-12-21 11:27:44,823 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:27:44,823 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:27:44,823 INFO L85 PathProgramCache]: Analyzing trace with hash 2034320583, now seen corresponding path program 1 times [2023-12-21 11:27:44,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:27:44,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2894316] [2023-12-21 11:27:44,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:27:44,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:27:44,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:45,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:27:45,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:45,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-21 11:27:45,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:45,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-21 11:27:45,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:45,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-21 11:27:45,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:45,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-21 11:27:45,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:45,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 11:27:45,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:45,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-21 11:27:45,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:45,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-21 11:27:45,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:45,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-21 11:27:45,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:45,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-21 11:27:45,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:45,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 11:27:45,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:45,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-12-21 11:27:45,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:45,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-12-21 11:27:45,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:45,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-21 11:27:45,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:45,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2023-12-21 11:27:45,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:45,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2023-12-21 11:27:45,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:45,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2023-12-21 11:27:45,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:45,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2023-12-21 11:27:45,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:45,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2023-12-21 11:27:45,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:45,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2023-12-21 11:27:45,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:45,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2023-12-21 11:27:45,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:45,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2023-12-21 11:27:45,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:45,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-12-21 11:27:45,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:45,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2023-12-21 11:27:45,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:45,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2023-12-21 11:27:45,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:45,056 INFO L134 CoverageAnalysis]: Checked inductivity of 305 backedges. 65 proven. 23 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2023-12-21 11:27:45,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:27:45,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2894316] [2023-12-21 11:27:45,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2894316] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:27:45,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1634603100] [2023-12-21 11:27:45,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:27:45,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:27:45,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:27:45,058 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) [2023-12-21 11:27:45,060 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-12-21 11:27:45,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:27:45,263 INFO L262 TraceCheckSpWp]: Trace formula consists of 973 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-21 11:27:45,277 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:27:45,452 INFO L134 CoverageAnalysis]: Checked inductivity of 305 backedges. 191 proven. 62 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-12-21 11:27:45,452 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:27:45,611 INFO L134 CoverageAnalysis]: Checked inductivity of 305 backedges. 65 proven. 23 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2023-12-21 11:27:45,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1634603100] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:27:45,612 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:27:45,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 12 [2023-12-21 11:27:45,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526068413] [2023-12-21 11:27:45,612 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:27:45,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-21 11:27:45,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:27:45,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-21 11:27:45,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-12-21 11:27:45,613 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) [2023-12-21 11:27:54,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:27:54,240 INFO L93 Difference]: Finished difference Result 67826 states and 84233 transitions. [2023-12-21 11:27:54,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-21 11:27:54,241 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 [2023-12-21 11:27:54,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:27:54,330 INFO L225 Difference]: With dead ends: 67826 [2023-12-21 11:27:54,330 INFO L226 Difference]: Without dead ends: 36287 [2023-12-21 11:27:54,368 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 [2023-12-21 11:27:54,368 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 [2023-12-21 11:27:54,368 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] [2023-12-21 11:27:54,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36287 states. [2023-12-21 11:28:02,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36287 to 34762. [2023-12-21 11:28:02,378 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) [2023-12-21 11:28:02,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34762 states to 34762 states and 43113 transitions. [2023-12-21 11:28:02,448 INFO L78 Accepts]: Start accepts. Automaton has 34762 states and 43113 transitions. Word has length 249 [2023-12-21 11:28:02,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:28:02,448 INFO L495 AbstractCegarLoop]: Abstraction has 34762 states and 43113 transitions. [2023-12-21 11:28:02,448 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) [2023-12-21 11:28:02,448 INFO L276 IsEmpty]: Start isEmpty. Operand 34762 states and 43113 transitions. [2023-12-21 11:28:02,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2023-12-21 11:28:02,463 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:28:02,463 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] [2023-12-21 11:28:02,471 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-12-21 11:28:02,668 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 [2023-12-21 11:28:02,668 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:28:02,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:28:02,668 INFO L85 PathProgramCache]: Analyzing trace with hash 912233656, now seen corresponding path program 1 times [2023-12-21 11:28:02,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:28:02,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872442661] [2023-12-21 11:28:02,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:28:02,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:28:02,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:02,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:28:02,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:02,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-21 11:28:02,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:02,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-21 11:28:02,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:02,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-12-21 11:28:02,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:02,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-21 11:28:02,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:02,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-21 11:28:02,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:02,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-21 11:28:02,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:02,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-21 11:28:02,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:02,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-21 11:28:02,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:02,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-21 11:28:02,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:02,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-12-21 11:28:02,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:02,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-12-21 11:28:02,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:02,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-12-21 11:28:02,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:02,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2023-12-21 11:28:02,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:02,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2023-12-21 11:28:02,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:02,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2023-12-21 11:28:02,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:02,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2023-12-21 11:28:02,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:02,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2023-12-21 11:28:02,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:02,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2023-12-21 11:28:02,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:02,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2023-12-21 11:28:02,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:02,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2023-12-21 11:28:02,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:02,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2023-12-21 11:28:02,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:02,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2023-12-21 11:28:02,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:02,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2023-12-21 11:28:02,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:02,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2023-12-21 11:28:02,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:02,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2023-12-21 11:28:02,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:02,868 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 42 proven. 4 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2023-12-21 11:28:02,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:28:02,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872442661] [2023-12-21 11:28:02,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872442661] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:28:02,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [962846130] [2023-12-21 11:28:02,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:28:02,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:28:02,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:28:02,870 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) [2023-12-21 11:28:02,873 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-12-21 11:28:03,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:03,078 INFO L262 TraceCheckSpWp]: Trace formula consists of 1001 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-21 11:28:03,081 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:28:03,265 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 168 proven. 76 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2023-12-21 11:28:03,266 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:28:03,432 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 63 proven. 23 refuted. 0 times theorem prover too weak. 221 trivial. 0 not checked. [2023-12-21 11:28:03,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [962846130] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:28:03,432 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:28:03,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 15 [2023-12-21 11:28:03,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494162983] [2023-12-21 11:28:03,433 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:28:03,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-21 11:28:03,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:28:03,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-21 11:28:03,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2023-12-21 11:28:03,434 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) [2023-12-21 11:28:11,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:28:11,022 INFO L93 Difference]: Finished difference Result 61312 states and 75960 transitions. [2023-12-21 11:28:11,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-12-21 11:28:11,023 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 [2023-12-21 11:28:11,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:28:11,088 INFO L225 Difference]: With dead ends: 61312 [2023-12-21 11:28:11,088 INFO L226 Difference]: Without dead ends: 27609 [2023-12-21 11:28:11,120 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 614 GetRequests, 558 SyntacticMatches, 4 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 656 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=589, Invalid=2273, Unknown=0, NotChecked=0, Total=2862 [2023-12-21 11:28:11,121 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 [2023-12-21 11:28:11,121 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] [2023-12-21 11:28:11,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27609 states. [2023-12-21 11:28:17,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27609 to 25938. [2023-12-21 11:28:17,131 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) [2023-12-21 11:28:17,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25938 states to 25938 states and 31912 transitions. [2023-12-21 11:28:17,187 INFO L78 Accepts]: Start accepts. Automaton has 25938 states and 31912 transitions. Word has length 252 [2023-12-21 11:28:17,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:28:17,187 INFO L495 AbstractCegarLoop]: Abstraction has 25938 states and 31912 transitions. [2023-12-21 11:28:17,187 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) [2023-12-21 11:28:17,187 INFO L276 IsEmpty]: Start isEmpty. Operand 25938 states and 31912 transitions. [2023-12-21 11:28:17,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2023-12-21 11:28:17,202 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:28:17,202 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] [2023-12-21 11:28:17,209 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-12-21 11:28:17,408 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 [2023-12-21 11:28:17,409 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:28:17,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:28:17,409 INFO L85 PathProgramCache]: Analyzing trace with hash -2063681580, now seen corresponding path program 1 times [2023-12-21 11:28:17,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:28:17,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897320939] [2023-12-21 11:28:17,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:28:17,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:28:17,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:18,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:28:18,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:18,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-21 11:28:18,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:18,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-12-21 11:28:18,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:18,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-12-21 11:28:18,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:18,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-12-21 11:28:18,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:18,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-21 11:28:18,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:18,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 11:28:18,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:18,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-21 11:28:18,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:18,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-12-21 11:28:18,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:18,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-12-21 11:28:18,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:18,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-12-21 11:28:18,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:18,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-12-21 11:28:18,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:18,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-21 11:28:18,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:18,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-12-21 11:28:18,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:18,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-21 11:28:18,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:18,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-12-21 11:28:18,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:18,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2023-12-21 11:28:18,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:18,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2023-12-21 11:28:18,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:18,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2023-12-21 11:28:18,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:18,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2023-12-21 11:28:18,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:18,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2023-12-21 11:28:18,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:18,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2023-12-21 11:28:18,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:18,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2023-12-21 11:28:18,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:18,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2023-12-21 11:28:18,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:18,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2023-12-21 11:28:18,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:18,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2023-12-21 11:28:18,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:18,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2023-12-21 11:28:18,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:18,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2023-12-21 11:28:18,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:18,516 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 58 proven. 34 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked. [2023-12-21 11:28:18,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:28:18,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897320939] [2023-12-21 11:28:18,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897320939] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:28:18,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1684653397] [2023-12-21 11:28:18,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:28:18,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:28:18,517 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:28:18,534 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) [2023-12-21 11:28:18,552 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-12-21 11:28:18,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:18,736 INFO L262 TraceCheckSpWp]: Trace formula consists of 1017 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-21 11:28:18,756 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:28:18,933 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 293 proven. 42 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2023-12-21 11:28:18,933 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:28:19,110 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 87 proven. 17 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2023-12-21 11:28:19,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1684653397] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:28:19,111 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:28:19,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10, 10] total 25 [2023-12-21 11:28:19,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492024435] [2023-12-21 11:28:19,111 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:28:19,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-12-21 11:28:19,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:28:19,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-12-21 11:28:19,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2023-12-21 11:28:19,113 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) [2023-12-21 11:28:34,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:28:34,329 INFO L93 Difference]: Finished difference Result 65011 states and 80631 transitions. [2023-12-21 11:28:34,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2023-12-21 11:28:34,330 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 [2023-12-21 11:28:34,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:28:34,418 INFO L225 Difference]: With dead ends: 65011 [2023-12-21 11:28:34,418 INFO L226 Difference]: Without dead ends: 40333 [2023-12-21 11:28:34,448 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 734 GetRequests, 601 SyntacticMatches, 1 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5962 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1455, Invalid=16367, Unknown=0, NotChecked=0, Total=17822 [2023-12-21 11:28:34,448 INFO L413 NwaCegarLoop]: 843 mSDtfsCounter, 1951 mSDsluCounter, 13346 mSDsCounter, 0 mSdLazyCounter, 7031 mSolverCounterSat, 625 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1964 SdHoareTripleChecker+Valid, 14189 SdHoareTripleChecker+Invalid, 7656 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 625 IncrementalHoareTripleChecker+Valid, 7031 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-12-21 11:28:34,448 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1964 Valid, 14189 Invalid, 7656 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [625 Valid, 7031 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-12-21 11:28:34,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40333 states. [2023-12-21 11:28:42,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40333 to 34395. [2023-12-21 11:28:42,980 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) [2023-12-21 11:28:43,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34395 states to 34395 states and 42333 transitions. [2023-12-21 11:28:43,053 INFO L78 Accepts]: Start accepts. Automaton has 34395 states and 42333 transitions. Word has length 263 [2023-12-21 11:28:43,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:28:43,053 INFO L495 AbstractCegarLoop]: Abstraction has 34395 states and 42333 transitions. [2023-12-21 11:28:43,054 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) [2023-12-21 11:28:43,054 INFO L276 IsEmpty]: Start isEmpty. Operand 34395 states and 42333 transitions. [2023-12-21 11:28:43,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2023-12-21 11:28:43,069 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:28:43,069 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] [2023-12-21 11:28:43,074 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2023-12-21 11:28:43,274 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 [2023-12-21 11:28:43,274 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:28:43,275 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:28:43,275 INFO L85 PathProgramCache]: Analyzing trace with hash 453834742, now seen corresponding path program 1 times [2023-12-21 11:28:43,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:28:43,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984709985] [2023-12-21 11:28:43,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:28:43,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:28:43,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:43,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:28:43,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:43,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-21 11:28:43,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:43,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-21 11:28:43,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:43,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-21 11:28:43,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:43,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-21 11:28:43,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:43,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 11:28:43,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:43,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-21 11:28:43,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:43,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-21 11:28:43,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:43,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-21 11:28:43,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:43,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-21 11:28:43,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:43,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 11:28:43,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:43,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-12-21 11:28:43,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:43,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-12-21 11:28:43,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:43,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-21 11:28:43,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:43,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2023-12-21 11:28:43,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:43,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2023-12-21 11:28:43,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:43,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2023-12-21 11:28:43,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:43,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2023-12-21 11:28:43,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:43,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2023-12-21 11:28:43,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:43,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2023-12-21 11:28:43,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:43,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2023-12-21 11:28:43,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:43,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2023-12-21 11:28:43,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:43,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2023-12-21 11:28:43,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:43,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2023-12-21 11:28:43,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:43,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2023-12-21 11:28:43,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:43,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2023-12-21 11:28:43,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:43,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2023-12-21 11:28:43,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:43,512 INFO L134 CoverageAnalysis]: Checked inductivity of 344 backedges. 88 proven. 2 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2023-12-21 11:28:43,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:28:43,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984709985] [2023-12-21 11:28:43,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984709985] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:28:43,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [408045300] [2023-12-21 11:28:43,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:28:43,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:28:43,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:28:43,514 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) [2023-12-21 11:28:43,516 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-12-21 11:28:43,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:28:43,712 INFO L262 TraceCheckSpWp]: Trace formula consists of 1009 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-21 11:28:43,715 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:28:43,846 INFO L134 CoverageAnalysis]: Checked inductivity of 344 backedges. 213 proven. 11 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2023-12-21 11:28:43,846 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:28:43,991 INFO L134 CoverageAnalysis]: Checked inductivity of 344 backedges. 73 proven. 2 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2023-12-21 11:28:43,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [408045300] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:28:43,991 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:28:43,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 10] total 19 [2023-12-21 11:28:43,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599013914] [2023-12-21 11:28:43,991 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:28:43,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-21 11:28:43,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:28:43,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-21 11:28:43,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2023-12-21 11:28:43,993 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) [2023-12-21 11:28:53,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:28:53,513 INFO L93 Difference]: Finished difference Result 64588 states and 79112 transitions. [2023-12-21 11:28:53,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-21 11:28:53,514 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 [2023-12-21 11:28:53,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:28:53,599 INFO L225 Difference]: With dead ends: 64588 [2023-12-21 11:28:53,599 INFO L226 Difference]: Without dead ends: 33511 [2023-12-21 11:28:53,632 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 620 GetRequests, 582 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=242, Invalid=1240, Unknown=0, NotChecked=0, Total=1482 [2023-12-21 11:28:53,633 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, 1.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:28:53,633 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1330 Valid, 6558 Invalid, 2556 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [580 Valid, 1976 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-21 11:28:53,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33511 states. [2023-12-21 11:29:01,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33511 to 31474. [2023-12-21 11:29:01,793 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) [2023-12-21 11:29:01,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31474 states to 31474 states and 38424 transitions. [2023-12-21 11:29:01,861 INFO L78 Accepts]: Start accepts. Automaton has 31474 states and 38424 transitions. Word has length 263 [2023-12-21 11:29:01,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:29:01,861 INFO L495 AbstractCegarLoop]: Abstraction has 31474 states and 38424 transitions. [2023-12-21 11:29:01,862 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) [2023-12-21 11:29:01,862 INFO L276 IsEmpty]: Start isEmpty. Operand 31474 states and 38424 transitions. [2023-12-21 11:29:01,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2023-12-21 11:29:01,877 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:29:01,878 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] [2023-12-21 11:29:01,884 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-12-21 11:29:02,084 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 [2023-12-21 11:29:02,084 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:29:02,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:29:02,084 INFO L85 PathProgramCache]: Analyzing trace with hash 816057275, now seen corresponding path program 1 times [2023-12-21 11:29:02,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:29:02,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862690727] [2023-12-21 11:29:02,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:29:02,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:29:02,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:03,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:29:03,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:03,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-21 11:29:03,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:03,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-21 11:29:03,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:03,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-12-21 11:29:03,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:03,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-21 11:29:03,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:03,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-21 11:29:03,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:03,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-21 11:29:03,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:03,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-21 11:29:03,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:03,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-21 11:29:03,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:03,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-21 11:29:03,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:03,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-21 11:29:03,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:03,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-21 11:29:03,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:03,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-12-21 11:29:03,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:03,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2023-12-21 11:29:03,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:03,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2023-12-21 11:29:03,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:03,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2023-12-21 11:29:03,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:03,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2023-12-21 11:29:03,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:03,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2023-12-21 11:29:03,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:03,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2023-12-21 11:29:03,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:03,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2023-12-21 11:29:03,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:03,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2023-12-21 11:29:03,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:03,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2023-12-21 11:29:03,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:03,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2023-12-21 11:29:03,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:03,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2023-12-21 11:29:03,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:03,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2023-12-21 11:29:03,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:03,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2023-12-21 11:29:03,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:03,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2023-12-21 11:29:03,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:03,149 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 37 proven. 42 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2023-12-21 11:29:03,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:29:03,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862690727] [2023-12-21 11:29:03,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862690727] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:29:03,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1236060982] [2023-12-21 11:29:03,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:29:03,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:29:03,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:29:03,151 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) [2023-12-21 11:29:03,153 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-12-21 11:29:03,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:03,351 INFO L262 TraceCheckSpWp]: Trace formula consists of 1028 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-21 11:29:03,355 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:29:03,899 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 120 proven. 160 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2023-12-21 11:29:03,899 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:29:05,265 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 26 proven. 53 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2023-12-21 11:29:05,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1236060982] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:29:05,265 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:29:05,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13, 13] total 38 [2023-12-21 11:29:05,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512665657] [2023-12-21 11:29:05,266 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:29:05,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-12-21 11:29:05,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:29:05,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-12-21 11:29:05,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=1280, Unknown=0, NotChecked=0, Total=1406 [2023-12-21 11:29:05,267 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) [2023-12-21 11:29:26,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:29:26,577 INFO L93 Difference]: Finished difference Result 74029 states and 90651 transitions. [2023-12-21 11:29:26,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 178 states. [2023-12-21 11:29:26,577 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 [2023-12-21 11:29:26,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:29:26,698 INFO L225 Difference]: With dead ends: 74029 [2023-12-21 11:29:26,698 INFO L226 Difference]: Without dead ends: 45907 [2023-12-21 11:29:26,732 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 [2023-12-21 11:29:26,732 INFO L413 NwaCegarLoop]: 768 mSDtfsCounter, 2763 mSDsluCounter, 10856 mSDsCounter, 0 mSdLazyCounter, 6956 mSolverCounterSat, 789 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s 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, 3.5s IncrementalHoareTripleChecker+Time [2023-12-21 11:29:26,732 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2763 Valid, 11624 Invalid, 7745 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [789 Valid, 6956 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-12-21 11:29:26,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45907 states. [2023-12-21 11:29:36,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45907 to 41115. [2023-12-21 11:29:36,889 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) [2023-12-21 11:29:36,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41115 states to 41115 states and 50254 transitions. [2023-12-21 11:29:36,974 INFO L78 Accepts]: Start accepts. Automaton has 41115 states and 50254 transitions. Word has length 264 [2023-12-21 11:29:36,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:29:36,974 INFO L495 AbstractCegarLoop]: Abstraction has 41115 states and 50254 transitions. [2023-12-21 11:29:36,974 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) [2023-12-21 11:29:36,975 INFO L276 IsEmpty]: Start isEmpty. Operand 41115 states and 50254 transitions. [2023-12-21 11:29:36,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2023-12-21 11:29:36,994 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:29:36,994 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] [2023-12-21 11:29:37,001 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2023-12-21 11:29:37,200 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 [2023-12-21 11:29:37,200 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:29:37,201 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:29:37,201 INFO L85 PathProgramCache]: Analyzing trace with hash 1133349940, now seen corresponding path program 1 times [2023-12-21 11:29:37,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:29:37,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810211037] [2023-12-21 11:29:37,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:29:37,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:29:37,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:37,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:29:37,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:37,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-21 11:29:37,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:37,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-21 11:29:37,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:37,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-12-21 11:29:37,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:37,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-21 11:29:37,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:37,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-21 11:29:37,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:37,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-21 11:29:37,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:37,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-21 11:29:37,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:37,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-21 11:29:37,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:37,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-21 11:29:37,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:37,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-21 11:29:37,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:37,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-21 11:29:37,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:37,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-12-21 11:29:37,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:37,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-21 11:29:37,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:37,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2023-12-21 11:29:37,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:37,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2023-12-21 11:29:37,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:37,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2023-12-21 11:29:37,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:37,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2023-12-21 11:29:37,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:37,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2023-12-21 11:29:37,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:37,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2023-12-21 11:29:37,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:37,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2023-12-21 11:29:37,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:37,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2023-12-21 11:29:37,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:37,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2023-12-21 11:29:37,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:37,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2023-12-21 11:29:37,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:37,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2023-12-21 11:29:37,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:37,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2023-12-21 11:29:37,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:37,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2023-12-21 11:29:37,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:37,727 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 45 proven. 34 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2023-12-21 11:29:37,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:29:37,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810211037] [2023-12-21 11:29:37,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810211037] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:29:37,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [719669685] [2023-12-21 11:29:37,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:29:37,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:29:37,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:29:37,731 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) [2023-12-21 11:29:37,732 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-12-21 11:29:37,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:29:37,933 INFO L262 TraceCheckSpWp]: Trace formula consists of 1040 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-21 11:29:37,937 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:29:38,145 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 165 proven. 115 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2023-12-21 11:29:38,146 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:29:38,395 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 51 proven. 28 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2023-12-21 11:29:38,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [719669685] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:29:38,396 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:29:38,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 8] total 21 [2023-12-21 11:29:38,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672401180] [2023-12-21 11:29:38,396 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:29:38,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-21 11:29:38,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:29:38,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-21 11:29:38,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=364, Unknown=0, NotChecked=0, Total=420 [2023-12-21 11:29:38,398 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) [2023-12-21 11:29:50,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:29:50,845 INFO L93 Difference]: Finished difference Result 83662 states and 102331 transitions. [2023-12-21 11:29:50,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2023-12-21 11:29:50,848 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 [2023-12-21 11:29:50,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:29:50,967 INFO L225 Difference]: With dead ends: 83662 [2023-12-21 11:29:50,968 INFO L226 Difference]: Without dead ends: 45556 [2023-12-21 11:29:51,022 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 [2023-12-21 11:29:51,024 INFO L413 NwaCegarLoop]: 418 mSDtfsCounter, 986 mSDsluCounter, 4427 mSDsCounter, 0 mSdLazyCounter, 2532 mSolverCounterSat, 336 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s 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, 0.9s IncrementalHoareTripleChecker+Time [2023-12-21 11:29:51,025 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [986 Valid, 4845 Invalid, 2868 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [336 Valid, 2532 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-21 11:29:51,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45556 states. [2023-12-21 11:30:00,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45556 to 39581. [2023-12-21 11:30:01,008 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) [2023-12-21 11:30:01,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39581 states to 39581 states and 48208 transitions. [2023-12-21 11:30:01,091 INFO L78 Accepts]: Start accepts. Automaton has 39581 states and 48208 transitions. Word has length 266 [2023-12-21 11:30:01,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:30:01,091 INFO L495 AbstractCegarLoop]: Abstraction has 39581 states and 48208 transitions. [2023-12-21 11:30:01,091 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) [2023-12-21 11:30:01,091 INFO L276 IsEmpty]: Start isEmpty. Operand 39581 states and 48208 transitions. [2023-12-21 11:30:01,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2023-12-21 11:30:01,106 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:30:01,111 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] [2023-12-21 11:30:01,119 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2023-12-21 11:30:01,317 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 [2023-12-21 11:30:01,317 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:30:01,320 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:30:01,320 INFO L85 PathProgramCache]: Analyzing trace with hash -1828244164, now seen corresponding path program 1 times [2023-12-21 11:30:01,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:30:01,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722811281] [2023-12-21 11:30:01,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:30:01,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:30:01,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:01,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:30:01,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:01,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-21 11:30:01,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:01,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-21 11:30:01,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:01,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-21 11:30:01,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:01,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-21 11:30:01,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:01,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 11:30:01,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:01,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-21 11:30:01,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:01,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-21 11:30:01,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:01,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-21 11:30:01,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:01,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-21 11:30:01,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:01,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 11:30:01,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:01,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-21 11:30:01,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:01,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-12-21 11:30:01,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:01,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2023-12-21 11:30:01,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:01,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2023-12-21 11:30:01,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:01,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2023-12-21 11:30:01,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:01,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2023-12-21 11:30:01,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:01,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2023-12-21 11:30:01,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:01,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2023-12-21 11:30:01,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:01,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2023-12-21 11:30:02,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:02,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2023-12-21 11:30:02,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:02,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2023-12-21 11:30:02,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:02,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2023-12-21 11:30:02,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:02,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2023-12-21 11:30:02,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:02,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2023-12-21 11:30:02,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:02,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2023-12-21 11:30:02,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:02,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2023-12-21 11:30:02,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:02,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2023-12-21 11:30:02,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:02,008 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 56 proven. 33 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2023-12-21 11:30:02,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:30:02,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722811281] [2023-12-21 11:30:02,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722811281] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:30:02,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [57227734] [2023-12-21 11:30:02,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:30:02,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:30:02,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:30:02,009 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) [2023-12-21 11:30:02,011 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-12-21 11:30:02,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:02,258 INFO L262 TraceCheckSpWp]: Trace formula consists of 1023 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-21 11:30:02,263 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:30:02,875 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 163 proven. 158 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-12-21 11:30:02,875 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:30:03,391 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 41 proven. 48 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2023-12-21 11:30:03,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [57227734] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:30:03,391 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:30:03,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 25 [2023-12-21 11:30:03,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139550002] [2023-12-21 11:30:03,392 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:30:03,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-12-21 11:30:03,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:30:03,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-12-21 11:30:03,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=513, Unknown=0, NotChecked=0, Total=600 [2023-12-21 11:30:03,393 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) [2023-12-21 11:30:15,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:30:15,156 INFO L93 Difference]: Finished difference Result 77845 states and 94999 transitions. [2023-12-21 11:30:15,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-12-21 11:30:15,156 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 [2023-12-21 11:30:15,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:30:15,271 INFO L225 Difference]: With dead ends: 77845 [2023-12-21 11:30:15,271 INFO L226 Difference]: Without dead ends: 39805 [2023-12-21 11:30:15,314 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 [2023-12-21 11:30:15,314 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 [2023-12-21 11:30:15,314 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] [2023-12-21 11:30:15,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39805 states. [2023-12-21 11:30:25,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39805 to 39533. [2023-12-21 11:30:25,325 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) [2023-12-21 11:30:25,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39533 states to 39533 states and 48042 transitions. [2023-12-21 11:30:25,465 INFO L78 Accepts]: Start accepts. Automaton has 39533 states and 48042 transitions. Word has length 267 [2023-12-21 11:30:25,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:30:25,466 INFO L495 AbstractCegarLoop]: Abstraction has 39533 states and 48042 transitions. [2023-12-21 11:30:25,466 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) [2023-12-21 11:30:25,466 INFO L276 IsEmpty]: Start isEmpty. Operand 39533 states and 48042 transitions. [2023-12-21 11:30:25,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2023-12-21 11:30:25,485 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:30:25,485 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] [2023-12-21 11:30:25,493 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2023-12-21 11:30:25,691 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 [2023-12-21 11:30:25,692 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:30:25,692 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:30:25,692 INFO L85 PathProgramCache]: Analyzing trace with hash -275434109, now seen corresponding path program 1 times [2023-12-21 11:30:25,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:30:25,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317965916] [2023-12-21 11:30:25,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:30:25,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:30:25,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:25,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:30:25,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:25,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-21 11:30:25,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:25,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-21 11:30:25,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:25,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-21 11:30:25,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:25,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-21 11:30:25,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:25,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 11:30:25,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:26,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-21 11:30:26,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:26,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-21 11:30:26,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:26,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-21 11:30:26,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:26,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-21 11:30:26,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:26,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 11:30:26,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:26,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-21 11:30:26,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:26,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-12-21 11:30:26,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:26,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2023-12-21 11:30:26,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:26,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2023-12-21 11:30:26,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:26,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2023-12-21 11:30:26,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:26,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2023-12-21 11:30:26,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:26,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2023-12-21 11:30:26,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:26,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2023-12-21 11:30:26,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:26,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2023-12-21 11:30:26,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:26,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2023-12-21 11:30:26,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:26,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2023-12-21 11:30:26,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:26,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2023-12-21 11:30:26,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:26,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2023-12-21 11:30:26,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:26,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2023-12-21 11:30:26,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:26,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2023-12-21 11:30:26,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:26,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2023-12-21 11:30:26,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:26,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2023-12-21 11:30:26,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:26,027 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 40 proven. 53 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2023-12-21 11:30:26,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:30:26,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317965916] [2023-12-21 11:30:26,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317965916] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:30:26,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1656664253] [2023-12-21 11:30:26,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:30:26,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:30:26,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:30:26,028 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) [2023-12-21 11:30:26,030 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-12-21 11:30:26,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:26,222 INFO L262 TraceCheckSpWp]: Trace formula consists of 1025 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-21 11:30:26,226 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:30:26,696 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 200 proven. 133 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2023-12-21 11:30:26,696 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:30:27,415 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 57 proven. 36 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2023-12-21 11:30:27,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1656664253] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:30:27,416 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:30:27,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 10] total 28 [2023-12-21 11:30:27,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607384377] [2023-12-21 11:30:27,416 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:30:27,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-21 11:30:27,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:30:27,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-21 11:30:27,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=628, Unknown=0, NotChecked=0, Total=756 [2023-12-21 11:30:27,418 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) [2023-12-21 11:30:41,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:30:41,409 INFO L93 Difference]: Finished difference Result 83826 states and 102251 transitions. [2023-12-21 11:30:41,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-12-21 11:30:41,410 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 [2023-12-21 11:30:41,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:30:41,534 INFO L225 Difference]: With dead ends: 83826 [2023-12-21 11:30:41,534 INFO L226 Difference]: Without dead ends: 47240 [2023-12-21 11:30:41,581 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 657 GetRequests, 584 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1376 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=998, Invalid=4552, Unknown=0, NotChecked=0, Total=5550 [2023-12-21 11:30:41,581 INFO L413 NwaCegarLoop]: 424 mSDtfsCounter, 1793 mSDsluCounter, 3965 mSDsCounter, 0 mSdLazyCounter, 3717 mSolverCounterSat, 418 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s 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, 1.5s IncrementalHoareTripleChecker+Time [2023-12-21 11:30:41,581 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1793 Valid, 4389 Invalid, 4135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [418 Valid, 3717 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-21 11:30:41,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47240 states. [2023-12-21 11:30:53,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47240 to 46559. [2023-12-21 11:30:53,700 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) [2023-12-21 11:30:53,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46559 states to 46559 states and 56700 transitions. [2023-12-21 11:30:53,817 INFO L78 Accepts]: Start accepts. Automaton has 46559 states and 56700 transitions. Word has length 269 [2023-12-21 11:30:53,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:30:53,818 INFO L495 AbstractCegarLoop]: Abstraction has 46559 states and 56700 transitions. [2023-12-21 11:30:53,818 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) [2023-12-21 11:30:53,818 INFO L276 IsEmpty]: Start isEmpty. Operand 46559 states and 56700 transitions. [2023-12-21 11:30:53,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2023-12-21 11:30:53,834 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:30:53,834 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] [2023-12-21 11:30:53,843 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2023-12-21 11:30:54,041 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 [2023-12-21 11:30:54,041 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:30:54,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:30:54,041 INFO L85 PathProgramCache]: Analyzing trace with hash -1240530148, now seen corresponding path program 1 times [2023-12-21 11:30:54,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:30:54,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31968905] [2023-12-21 11:30:54,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:30:54,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:30:54,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:55,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:30:55,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:55,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-21 11:30:55,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:55,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-21 11:30:55,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:55,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-12-21 11:30:55,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:55,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-21 11:30:55,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:55,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-21 11:30:55,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:55,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-21 11:30:55,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:55,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-21 11:30:55,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:55,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-21 11:30:55,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:55,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-21 11:30:55,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:55,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-21 11:30:55,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:55,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-21 11:30:55,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:55,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-12-21 11:30:55,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:55,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-12-21 11:30:55,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:55,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-21 11:30:55,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:55,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2023-12-21 11:30:55,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:55,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2023-12-21 11:30:55,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:55,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2023-12-21 11:30:55,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:55,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2023-12-21 11:30:55,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:55,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2023-12-21 11:30:55,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:55,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2023-12-21 11:30:55,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:55,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2023-12-21 11:30:55,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:55,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-12-21 11:30:55,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:55,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2023-12-21 11:30:55,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:55,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2023-12-21 11:30:55,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:55,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2023-12-21 11:30:55,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:55,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2023-12-21 11:30:55,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:55,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2023-12-21 11:30:55,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:55,166 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 50 proven. 40 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked. [2023-12-21 11:30:55,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:30:55,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31968905] [2023-12-21 11:30:55,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31968905] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:30:55,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1605788577] [2023-12-21 11:30:55,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:30:55,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:30:55,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:30:55,168 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) [2023-12-21 11:30:55,170 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-12-21 11:30:55,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:30:55,391 INFO L262 TraceCheckSpWp]: Trace formula consists of 1043 conjuncts, 32 conjunts are in the unsatisfiable core [2023-12-21 11:30:55,394 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:30:55,968 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 164 proven. 156 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2023-12-21 11:30:55,968 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:30:56,874 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 41 proven. 49 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked. [2023-12-21 11:30:56,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1605788577] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:30:56,874 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:30:56,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 12] total 32 [2023-12-21 11:30:56,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716290619] [2023-12-21 11:30:56,875 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:30:56,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-21 11:30:56,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:30:56,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-21 11:30:56,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=880, Unknown=0, NotChecked=0, Total=992 [2023-12-21 11:30:56,876 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) [2023-12-21 11:31:17,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:31:17,858 INFO L93 Difference]: Finished difference Result 104196 states and 126920 transitions. [2023-12-21 11:31:17,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2023-12-21 11:31:17,859 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 [2023-12-21 11:31:17,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:31:18,004 INFO L225 Difference]: With dead ends: 104196 [2023-12-21 11:31:18,004 INFO L226 Difference]: Without dead ends: 58263 [2023-12-21 11:31:18,066 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 712 GetRequests, 599 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3726 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1766, Invalid=11344, Unknown=0, NotChecked=0, Total=13110 [2023-12-21 11:31:18,066 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, 3.5s IncrementalHoareTripleChecker+Time [2023-12-21 11:31:18,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1905 Valid, 9750 Invalid, 8177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [504 Valid, 7673 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-12-21 11:31:18,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58263 states. [2023-12-21 11:31:31,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58263 to 48128. [2023-12-21 11:31:31,073 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) [2023-12-21 11:31:31,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48128 states to 48128 states and 58575 transitions. [2023-12-21 11:31:31,194 INFO L78 Accepts]: Start accepts. Automaton has 48128 states and 58575 transitions. Word has length 270 [2023-12-21 11:31:31,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:31:31,194 INFO L495 AbstractCegarLoop]: Abstraction has 48128 states and 58575 transitions. [2023-12-21 11:31:31,195 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) [2023-12-21 11:31:31,195 INFO L276 IsEmpty]: Start isEmpty. Operand 48128 states and 58575 transitions. [2023-12-21 11:31:31,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2023-12-21 11:31:31,207 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:31:31,207 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] [2023-12-21 11:31:31,214 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2023-12-21 11:31:31,414 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 [2023-12-21 11:31:31,414 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:31:31,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:31:31,415 INFO L85 PathProgramCache]: Analyzing trace with hash 366358307, now seen corresponding path program 1 times [2023-12-21 11:31:31,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:31:31,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567039639] [2023-12-21 11:31:31,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:31:31,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:31:31,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:31:31,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:31:31,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:31:31,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-21 11:31:31,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:31:31,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-21 11:31:31,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:31:31,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-21 11:31:31,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:31:31,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-21 11:31:31,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:31:31,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 11:31:31,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:31:31,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-21 11:31:31,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:31:31,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-21 11:31:31,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:31:31,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-21 11:31:31,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:31:31,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-21 11:31:31,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:31:31,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 11:31:31,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:31:31,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-12-21 11:31:31,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:31:31,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-12-21 11:31:31,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:31:31,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-12-21 11:31:31,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:31:31,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2023-12-21 11:31:31,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:31:31,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2023-12-21 11:31:31,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:31:31,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2023-12-21 11:31:31,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:31:31,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2023-12-21 11:31:31,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:31:31,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2023-12-21 11:31:31,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:31:31,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2023-12-21 11:31:31,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:31:31,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2023-12-21 11:31:31,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:31:31,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2023-12-21 11:31:31,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:31:31,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-12-21 11:31:31,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:31:31,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2023-12-21 11:31:31,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:31:31,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2023-12-21 11:31:31,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:31:31,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2023-12-21 11:31:31,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:31:31,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2023-12-21 11:31:31,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:31:31,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2023-12-21 11:31:31,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:31:31,799 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 55 proven. 39 refuted. 0 times theorem prover too weak. 271 trivial. 0 not checked. [2023-12-21 11:31:31,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:31:31,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567039639] [2023-12-21 11:31:31,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567039639] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:31:31,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [500652764] [2023-12-21 11:31:31,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:31:31,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:31:31,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:31:31,801 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) [2023-12-21 11:31:31,803 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-12-21 11:31:31,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:31:31,989 INFO L262 TraceCheckSpWp]: Trace formula consists of 1029 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-21 11:31:32,002 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:31:32,518 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 181 proven. 136 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-12-21 11:31:32,519 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:31:33,253 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 50 proven. 44 refuted. 0 times theorem prover too weak. 271 trivial. 0 not checked. [2023-12-21 11:31:33,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [500652764] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:31:33,254 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:31:33,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 8] total 21 [2023-12-21 11:31:33,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366896892] [2023-12-21 11:31:33,254 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:31:33,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-21 11:31:33,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:31:33,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-21 11:31:33,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2023-12-21 11:31:33,256 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) [2023-12-21 11:31:49,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:31:49,232 INFO L93 Difference]: Finished difference Result 100694 states and 122655 transitions. [2023-12-21 11:31:49,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-12-21 11:31:49,233 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 [2023-12-21 11:31:49,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:31:49,385 INFO L225 Difference]: With dead ends: 100694 [2023-12-21 11:31:49,385 INFO L226 Difference]: Without dead ends: 54833 [2023-12-21 11:31:49,448 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 [2023-12-21 11:31:49,448 INFO L413 NwaCegarLoop]: 485 mSDtfsCounter, 1050 mSDsluCounter, 3040 mSDsCounter, 0 mSdLazyCounter, 2326 mSolverCounterSat, 269 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s 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, 1.1s IncrementalHoareTripleChecker+Time [2023-12-21 11:31:49,448 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1051 Valid, 3525 Invalid, 2595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [269 Valid, 2326 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-21 11:31:49,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54833 states. [2023-12-21 11:32:03,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54833 to 53143. [2023-12-21 11:32:03,621 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) [2023-12-21 11:32:03,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53143 states to 53143 states and 64685 transitions. [2023-12-21 11:32:03,747 INFO L78 Accepts]: Start accepts. Automaton has 53143 states and 64685 transitions. Word has length 270 [2023-12-21 11:32:03,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:32:03,748 INFO L495 AbstractCegarLoop]: Abstraction has 53143 states and 64685 transitions. [2023-12-21 11:32:03,748 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) [2023-12-21 11:32:03,748 INFO L276 IsEmpty]: Start isEmpty. Operand 53143 states and 64685 transitions. [2023-12-21 11:32:03,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2023-12-21 11:32:03,761 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:32:03,761 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] [2023-12-21 11:32:03,771 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2023-12-21 11:32:03,972 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 [2023-12-21 11:32:03,972 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:32:03,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:32:03,972 INFO L85 PathProgramCache]: Analyzing trace with hash 700102398, now seen corresponding path program 1 times [2023-12-21 11:32:03,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:32:03,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953249961] [2023-12-21 11:32:03,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:32:03,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:32:04,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:05,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:32:05,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:05,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-21 11:32:05,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:05,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-21 11:32:05,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:05,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-12-21 11:32:05,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:05,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-21 11:32:05,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:05,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-21 11:32:05,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:05,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-21 11:32:05,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:05,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-21 11:32:05,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:05,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-21 11:32:05,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:05,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-21 11:32:05,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:05,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-21 11:32:05,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:05,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-21 11:32:05,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:05,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-12-21 11:32:05,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:05,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-21 11:32:05,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:05,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2023-12-21 11:32:05,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:05,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2023-12-21 11:32:05,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:05,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2023-12-21 11:32:05,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:05,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2023-12-21 11:32:05,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:05,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2023-12-21 11:32:05,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:05,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2023-12-21 11:32:05,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:05,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2023-12-21 11:32:05,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:05,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2023-12-21 11:32:05,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:05,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2023-12-21 11:32:05,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:05,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2023-12-21 11:32:05,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:05,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2023-12-21 11:32:05,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:05,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2023-12-21 11:32:05,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:05,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2023-12-21 11:32:05,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:05,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2023-12-21 11:32:05,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:05,112 INFO L134 CoverageAnalysis]: Checked inductivity of 349 backedges. 29 proven. 50 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2023-12-21 11:32:05,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:32:05,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953249961] [2023-12-21 11:32:05,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953249961] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:32:05,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1495134371] [2023-12-21 11:32:05,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:32:05,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:32:05,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:32:05,129 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) [2023-12-21 11:32:05,139 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-12-21 11:32:05,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:05,345 INFO L262 TraceCheckSpWp]: Trace formula consists of 1057 conjuncts, 43 conjunts are in the unsatisfiable core [2023-12-21 11:32:05,349 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:32:06,925 INFO L134 CoverageAnalysis]: Checked inductivity of 349 backedges. 137 proven. 163 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2023-12-21 11:32:06,926 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:32:09,157 INFO L134 CoverageAnalysis]: Checked inductivity of 349 backedges. 49 proven. 30 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2023-12-21 11:32:09,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1495134371] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:32:09,157 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:32:09,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 10] total 27 [2023-12-21 11:32:09,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816912730] [2023-12-21 11:32:09,158 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:32:09,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-12-21 11:32:09,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:32:09,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-12-21 11:32:09,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=591, Unknown=0, NotChecked=0, Total=702 [2023-12-21 11:32:09,163 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) [2023-12-21 11:32:25,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:32:25,233 INFO L93 Difference]: Finished difference Result 100072 states and 122242 transitions. [2023-12-21 11:32:25,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2023-12-21 11:32:25,233 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 [2023-12-21 11:32:25,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:32:25,344 INFO L225 Difference]: With dead ends: 100072 [2023-12-21 11:32:25,344 INFO L226 Difference]: Without dead ends: 48851 [2023-12-21 11:32:25,397 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 679 GetRequests, 600 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1979 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1458, Invalid=5022, Unknown=0, NotChecked=0, Total=6480 [2023-12-21 11:32:25,397 INFO L413 NwaCegarLoop]: 334 mSDtfsCounter, 996 mSDsluCounter, 1905 mSDsCounter, 0 mSdLazyCounter, 1266 mSolverCounterSat, 285 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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, 0.7s IncrementalHoareTripleChecker+Time [2023-12-21 11:32:25,398 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [996 Valid, 2239 Invalid, 1551 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [285 Valid, 1266 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-21 11:32:25,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48851 states. [2023-12-21 11:32:38,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48851 to 48018. [2023-12-21 11:32:38,753 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) [2023-12-21 11:32:38,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48018 states to 48018 states and 58714 transitions. [2023-12-21 11:32:38,957 INFO L78 Accepts]: Start accepts. Automaton has 48018 states and 58714 transitions. Word has length 272 [2023-12-21 11:32:38,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:32:38,958 INFO L495 AbstractCegarLoop]: Abstraction has 48018 states and 58714 transitions. [2023-12-21 11:32:38,958 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) [2023-12-21 11:32:38,958 INFO L276 IsEmpty]: Start isEmpty. Operand 48018 states and 58714 transitions. [2023-12-21 11:32:38,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2023-12-21 11:32:38,968 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:32:38,968 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] [2023-12-21 11:32:38,976 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2023-12-21 11:32:39,174 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 [2023-12-21 11:32:39,174 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:32:39,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:32:39,174 INFO L85 PathProgramCache]: Analyzing trace with hash 504045621, now seen corresponding path program 1 times [2023-12-21 11:32:39,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:32:39,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478642189] [2023-12-21 11:32:39,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:32:39,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:32:39,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:39,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:32:39,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:39,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-21 11:32:39,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:39,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-21 11:32:39,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:39,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-21 11:32:39,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:39,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-21 11:32:39,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:39,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 11:32:39,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:39,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-21 11:32:39,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:39,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-21 11:32:39,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:39,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-21 11:32:39,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:39,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-21 11:32:39,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:39,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 11:32:39,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:39,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-21 11:32:39,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:39,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-12-21 11:32:39,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:39,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2023-12-21 11:32:39,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:39,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2023-12-21 11:32:39,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:39,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2023-12-21 11:32:39,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:39,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2023-12-21 11:32:39,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:39,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2023-12-21 11:32:39,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:39,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2023-12-21 11:32:39,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:39,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2023-12-21 11:32:39,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:39,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2023-12-21 11:32:39,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:39,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2023-12-21 11:32:39,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:39,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2023-12-21 11:32:39,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:39,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2023-12-21 11:32:39,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:39,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2023-12-21 11:32:39,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:39,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2023-12-21 11:32:39,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:39,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2023-12-21 11:32:39,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:39,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2023-12-21 11:32:39,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:39,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2023-12-21 11:32:39,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:39,434 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 56 proven. 28 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2023-12-21 11:32:39,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:32:39,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478642189] [2023-12-21 11:32:39,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478642189] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:32:39,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [401222274] [2023-12-21 11:32:39,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:32:39,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:32:39,434 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:32:39,435 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) [2023-12-21 11:32:39,437 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-12-21 11:32:39,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:32:39,709 INFO L262 TraceCheckSpWp]: Trace formula consists of 1040 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-21 11:32:39,713 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:32:40,043 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 184 proven. 160 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2023-12-21 11:32:40,044 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:32:40,252 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 56 proven. 28 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2023-12-21 11:32:40,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [401222274] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:32:40,252 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:32:40,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 7] total 20 [2023-12-21 11:32:40,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621789351] [2023-12-21 11:32:40,253 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:32:40,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-21 11:32:40,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:32:40,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-21 11:32:40,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2023-12-21 11:32:40,254 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) [2023-12-21 11:32:54,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:32:54,286 INFO L93 Difference]: Finished difference Result 96383 states and 117934 transitions. [2023-12-21 11:32:54,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-12-21 11:32:54,286 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 [2023-12-21 11:32:54,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:32:54,399 INFO L225 Difference]: With dead ends: 96383 [2023-12-21 11:32:54,399 INFO L226 Difference]: Without dead ends: 49025 [2023-12-21 11:32:54,448 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 [2023-12-21 11:32:54,448 INFO L413 NwaCegarLoop]: 323 mSDtfsCounter, 721 mSDsluCounter, 2022 mSDsCounter, 0 mSdLazyCounter, 1493 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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, 0.7s IncrementalHoareTripleChecker+Time [2023-12-21 11:32:54,449 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [726 Valid, 2345 Invalid, 1669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [176 Valid, 1493 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-21 11:32:54,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49025 states. [2023-12-21 11:33:08,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49025 to 48156. [2023-12-21 11:33:08,349 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) [2023-12-21 11:33:08,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48156 states to 48156 states and 58454 transitions. [2023-12-21 11:33:08,457 INFO L78 Accepts]: Start accepts. Automaton has 48156 states and 58454 transitions. Word has length 274 [2023-12-21 11:33:08,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:33:08,457 INFO L495 AbstractCegarLoop]: Abstraction has 48156 states and 58454 transitions. [2023-12-21 11:33:08,457 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) [2023-12-21 11:33:08,457 INFO L276 IsEmpty]: Start isEmpty. Operand 48156 states and 58454 transitions. [2023-12-21 11:33:08,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2023-12-21 11:33:08,467 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:33:08,468 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] [2023-12-21 11:33:08,474 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2023-12-21 11:33:08,674 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 [2023-12-21 11:33:08,674 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:33:08,675 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:33:08,675 INFO L85 PathProgramCache]: Analyzing trace with hash -1123839403, now seen corresponding path program 1 times [2023-12-21 11:33:08,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:33:08,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804193275] [2023-12-21 11:33:08,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:33:08,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:33:08,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:09,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:33:09,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:09,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-21 11:33:09,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:09,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-21 11:33:09,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:09,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-21 11:33:09,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:09,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-21 11:33:09,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:09,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 11:33:09,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:09,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-21 11:33:09,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:09,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-21 11:33:09,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:09,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-21 11:33:09,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:09,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-21 11:33:09,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:09,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 11:33:09,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:09,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-21 11:33:09,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:09,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-12-21 11:33:09,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:09,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2023-12-21 11:33:09,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:09,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2023-12-21 11:33:09,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:09,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2023-12-21 11:33:09,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:09,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2023-12-21 11:33:09,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:09,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2023-12-21 11:33:09,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:09,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2023-12-21 11:33:09,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:09,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2023-12-21 11:33:09,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:09,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2023-12-21 11:33:09,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:09,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2023-12-21 11:33:09,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:09,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2023-12-21 11:33:09,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:09,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2023-12-21 11:33:09,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:09,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2023-12-21 11:33:09,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:09,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2023-12-21 11:33:09,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:09,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2023-12-21 11:33:09,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:09,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2023-12-21 11:33:09,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:09,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2023-12-21 11:33:09,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:09,534 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 52 proven. 36 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2023-12-21 11:33:09,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:33:09,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804193275] [2023-12-21 11:33:09,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804193275] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:33:09,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1458133627] [2023-12-21 11:33:09,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:33:09,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:33:09,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:33:09,536 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) [2023-12-21 11:33:09,540 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2023-12-21 11:33:09,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:09,739 INFO L262 TraceCheckSpWp]: Trace formula consists of 1044 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-21 11:33:09,754 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:33:10,353 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 218 proven. 130 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2023-12-21 11:33:10,354 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:33:10,866 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 56 proven. 32 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2023-12-21 11:33:10,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1458133627] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:33:10,867 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:33:10,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 22 [2023-12-21 11:33:10,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885082172] [2023-12-21 11:33:10,867 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:33:10,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-21 11:33:10,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:33:10,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-21 11:33:10,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=349, Unknown=0, NotChecked=0, Total=462 [2023-12-21 11:33:10,869 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) [2023-12-21 11:33:21,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:33:21,270 INFO L93 Difference]: Finished difference Result 80624 states and 97864 transitions. [2023-12-21 11:33:21,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-12-21 11:33:21,271 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 [2023-12-21 11:33:21,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:33:21,354 INFO L225 Difference]: With dead ends: 80624 [2023-12-21 11:33:21,355 INFO L226 Difference]: Without dead ends: 33847 [2023-12-21 11:33:21,402 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 653 GetRequests, 612 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 413 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=537, Invalid=1269, Unknown=0, NotChecked=0, Total=1806 [2023-12-21 11:33:21,403 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 [2023-12-21 11:33:21,403 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] [2023-12-21 11:33:21,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33847 states. [2023-12-21 11:33:30,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33847 to 33700. [2023-12-21 11:33:30,930 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) [2023-12-21 11:33:30,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33700 states to 33700 states and 40732 transitions. [2023-12-21 11:33:31,003 INFO L78 Accepts]: Start accepts. Automaton has 33700 states and 40732 transitions. Word has length 277 [2023-12-21 11:33:31,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:33:31,004 INFO L495 AbstractCegarLoop]: Abstraction has 33700 states and 40732 transitions. [2023-12-21 11:33:31,004 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) [2023-12-21 11:33:31,004 INFO L276 IsEmpty]: Start isEmpty. Operand 33700 states and 40732 transitions. [2023-12-21 11:33:31,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2023-12-21 11:33:31,014 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:33:31,014 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] [2023-12-21 11:33:31,020 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2023-12-21 11:33:31,220 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 [2023-12-21 11:33:31,220 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:33:31,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:33:31,221 INFO L85 PathProgramCache]: Analyzing trace with hash 1880582005, now seen corresponding path program 1 times [2023-12-21 11:33:31,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:33:31,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41497906] [2023-12-21 11:33:31,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:33:31,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:33:31,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:31,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:33:31,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:31,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-21 11:33:31,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:31,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-21 11:33:31,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:31,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-21 11:33:31,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:31,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-21 11:33:31,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:31,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 11:33:31,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:31,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-21 11:33:31,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:31,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-21 11:33:31,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:31,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-21 11:33:31,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:31,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-21 11:33:31,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:31,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 11:33:31,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:31,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-12-21 11:33:31,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:31,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2023-12-21 11:33:31,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:31,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-12-21 11:33:31,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:31,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2023-12-21 11:33:31,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:32,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2023-12-21 11:33:32,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:32,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2023-12-21 11:33:32,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:32,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2023-12-21 11:33:32,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:32,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2023-12-21 11:33:32,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:32,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2023-12-21 11:33:32,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:32,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2023-12-21 11:33:32,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:32,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2023-12-21 11:33:32,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:32,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2023-12-21 11:33:32,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:32,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2023-12-21 11:33:32,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:32,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2023-12-21 11:33:32,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:32,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2023-12-21 11:33:32,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:32,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2023-12-21 11:33:32,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:32,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2023-12-21 11:33:32,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:32,012 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 65 proven. 20 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2023-12-21 11:33:32,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:33:32,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41497906] [2023-12-21 11:33:32,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41497906] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:33:32,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [547391949] [2023-12-21 11:33:32,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:33:32,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:33:32,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:33:32,014 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) [2023-12-21 11:33:32,016 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2023-12-21 11:33:32,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:32,205 INFO L262 TraceCheckSpWp]: Trace formula consists of 1069 conjuncts, 45 conjunts are in the unsatisfiable core [2023-12-21 11:33:32,216 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:33:32,882 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 180 proven. 132 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-12-21 11:33:32,883 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:33:33,698 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 65 proven. 20 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2023-12-21 11:33:33,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [547391949] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:33:33,698 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:33:33,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14, 9] total 29 [2023-12-21 11:33:33,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763436337] [2023-12-21 11:33:33,699 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:33:33,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-21 11:33:33,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:33:33,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-21 11:33:33,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=690, Unknown=0, NotChecked=0, Total=812 [2023-12-21 11:33:33,700 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) [2023-12-21 11:33:45,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:33:45,212 INFO L93 Difference]: Finished difference Result 66689 states and 80824 transitions. [2023-12-21 11:33:45,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-12-21 11:33:45,213 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 [2023-12-21 11:33:45,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:33:45,300 INFO L225 Difference]: With dead ends: 66689 [2023-12-21 11:33:45,300 INFO L226 Difference]: Without dead ends: 34496 [2023-12-21 11:33:45,340 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 663 GetRequests, 605 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 844 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=501, Invalid=3039, Unknown=0, NotChecked=0, Total=3540 [2023-12-21 11:33:45,342 INFO L413 NwaCegarLoop]: 334 mSDtfsCounter, 660 mSDsluCounter, 3518 mSDsCounter, 0 mSdLazyCounter, 2813 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s 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, 1.3s IncrementalHoareTripleChecker+Time [2023-12-21 11:33:45,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [666 Valid, 3852 Invalid, 2975 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 2813 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-21 11:33:45,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34496 states. [2023-12-21 11:33:54,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34496 to 33683. [2023-12-21 11:33:54,882 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) [2023-12-21 11:33:54,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33683 states to 33683 states and 40712 transitions. [2023-12-21 11:33:54,954 INFO L78 Accepts]: Start accepts. Automaton has 33683 states and 40712 transitions. Word has length 279 [2023-12-21 11:33:54,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:33:54,955 INFO L495 AbstractCegarLoop]: Abstraction has 33683 states and 40712 transitions. [2023-12-21 11:33:54,955 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) [2023-12-21 11:33:54,955 INFO L276 IsEmpty]: Start isEmpty. Operand 33683 states and 40712 transitions. [2023-12-21 11:33:54,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2023-12-21 11:33:54,963 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:33:54,963 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] [2023-12-21 11:33:54,971 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2023-12-21 11:33:55,172 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 [2023-12-21 11:33:55,173 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:33:55,173 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:33:55,173 INFO L85 PathProgramCache]: Analyzing trace with hash -679164871, now seen corresponding path program 1 times [2023-12-21 11:33:55,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:33:55,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001396448] [2023-12-21 11:33:55,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:33:55,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:33:55,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:55,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:33:55,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:55,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-21 11:33:55,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:55,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-21 11:33:55,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:55,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-12-21 11:33:55,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:55,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-21 11:33:55,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:55,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-21 11:33:55,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:55,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-21 11:33:55,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:55,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-21 11:33:55,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:55,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-21 11:33:55,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:55,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-21 11:33:55,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:55,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-21 11:33:55,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:55,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-21 11:33:55,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:55,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-12-21 11:33:55,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:55,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2023-12-21 11:33:55,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:55,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2023-12-21 11:33:55,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:55,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2023-12-21 11:33:55,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:55,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2023-12-21 11:33:55,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:55,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2023-12-21 11:33:55,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:55,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2023-12-21 11:33:55,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:55,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2023-12-21 11:33:55,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:55,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2023-12-21 11:33:55,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:55,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2023-12-21 11:33:55,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:55,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2023-12-21 11:33:55,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:55,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2023-12-21 11:33:55,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:55,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2023-12-21 11:33:55,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:55,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2023-12-21 11:33:55,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:55,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2023-12-21 11:33:55,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:55,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2023-12-21 11:33:55,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:55,882 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 46 proven. 50 refuted. 0 times theorem prover too weak. 278 trivial. 0 not checked. [2023-12-21 11:33:55,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:33:55,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001396448] [2023-12-21 11:33:55,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001396448] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:33:55,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [60337200] [2023-12-21 11:33:55,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:33:55,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:33:55,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:33:55,883 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) [2023-12-21 11:33:55,884 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2023-12-21 11:33:56,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:33:56,134 INFO L262 TraceCheckSpWp]: Trace formula consists of 1086 conjuncts, 35 conjunts are in the unsatisfiable core [2023-12-21 11:33:56,138 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:33:57,456 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 156 proven. 165 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2023-12-21 11:33:57,457 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:33:59,176 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 36 proven. 60 refuted. 0 times theorem prover too weak. 278 trivial. 0 not checked. [2023-12-21 11:33:59,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [60337200] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:33:59,176 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:33:59,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 30 [2023-12-21 11:33:59,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753219224] [2023-12-21 11:33:59,176 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:33:59,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-12-21 11:33:59,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:33:59,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-12-21 11:33:59,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=755, Unknown=0, NotChecked=0, Total=870 [2023-12-21 11:33:59,178 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) [2023-12-21 11:34:12,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:34:12,768 INFO L93 Difference]: Finished difference Result 65979 states and 79754 transitions. [2023-12-21 11:34:12,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2023-12-21 11:34:12,769 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 [2023-12-21 11:34:12,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:34:12,840 INFO L225 Difference]: With dead ends: 65979 [2023-12-21 11:34:12,840 INFO L226 Difference]: Without dead ends: 33332 [2023-12-21 11:34:12,876 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 731 GetRequests, 623 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3466 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1919, Invalid=10071, Unknown=0, NotChecked=0, Total=11990 [2023-12-21 11:34:12,876 INFO L413 NwaCegarLoop]: 450 mSDtfsCounter, 4008 mSDsluCounter, 3852 mSDsCounter, 0 mSdLazyCounter, 2763 mSolverCounterSat, 1291 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s 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, 1.6s IncrementalHoareTripleChecker+Time [2023-12-21 11:34:12,876 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4008 Valid, 4302 Invalid, 4054 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1291 Valid, 2763 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-21 11:34:12,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33332 states. [2023-12-21 11:34:21,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33332 to 30783. [2023-12-21 11:34:22,019 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) [2023-12-21 11:34:22,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30783 states to 30783 states and 36967 transitions. [2023-12-21 11:34:22,083 INFO L78 Accepts]: Start accepts. Automaton has 30783 states and 36967 transitions. Word has length 280 [2023-12-21 11:34:22,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:34:22,084 INFO L495 AbstractCegarLoop]: Abstraction has 30783 states and 36967 transitions. [2023-12-21 11:34:22,084 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) [2023-12-21 11:34:22,084 INFO L276 IsEmpty]: Start isEmpty. Operand 30783 states and 36967 transitions. [2023-12-21 11:34:22,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2023-12-21 11:34:22,091 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:34:22,091 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] [2023-12-21 11:34:22,098 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2023-12-21 11:34:22,298 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 [2023-12-21 11:34:22,298 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:34:22,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:34:22,298 INFO L85 PathProgramCache]: Analyzing trace with hash 669739165, now seen corresponding path program 1 times [2023-12-21 11:34:22,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:34:22,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489970694] [2023-12-21 11:34:22,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:34:22,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:34:22,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:22,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:34:22,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:22,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-21 11:34:22,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:22,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-21 11:34:22,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:22,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-12-21 11:34:22,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:22,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-21 11:34:22,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:22,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-21 11:34:22,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:22,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-21 11:34:22,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:22,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-21 11:34:22,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:22,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-21 11:34:22,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:22,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-21 11:34:22,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:22,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-21 11:34:22,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:22,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-21 11:34:22,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:22,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-12-21 11:34:22,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:22,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-12-21 11:34:22,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:22,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2023-12-21 11:34:22,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:22,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2023-12-21 11:34:22,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:22,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2023-12-21 11:34:22,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:22,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2023-12-21 11:34:22,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:22,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2023-12-21 11:34:22,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:22,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2023-12-21 11:34:22,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:22,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2023-12-21 11:34:22,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:22,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2023-12-21 11:34:22,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:22,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2023-12-21 11:34:22,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:22,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2023-12-21 11:34:22,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:22,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2023-12-21 11:34:22,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:22,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2023-12-21 11:34:22,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:22,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2023-12-21 11:34:22,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:22,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2023-12-21 11:34:22,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:22,402 INFO L134 CoverageAnalysis]: Checked inductivity of 368 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 314 trivial. 0 not checked. [2023-12-21 11:34:22,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:34:22,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489970694] [2023-12-21 11:34:22,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489970694] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:34:22,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:34:22,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 11:34:22,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487819915] [2023-12-21 11:34:22,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:34:22,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 11:34:22,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:34:22,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 11:34:22,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 11:34:22,404 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) [2023-12-21 11:34:27,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:34:27,483 INFO L93 Difference]: Finished difference Result 45020 states and 54013 transitions. [2023-12-21 11:34:27,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 11:34:27,483 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 [2023-12-21 11:34:27,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:34:27,514 INFO L225 Difference]: With dead ends: 45020 [2023-12-21 11:34:27,514 INFO L226 Difference]: Without dead ends: 15744 [2023-12-21 11:34:27,539 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 [2023-12-21 11:34:27,540 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 [2023-12-21 11:34:27,540 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] [2023-12-21 11:34:27,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15744 states. [2023-12-21 11:34:32,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15744 to 15539. [2023-12-21 11:34:32,425 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) [2023-12-21 11:34:32,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15539 states to 15539 states and 18446 transitions. [2023-12-21 11:34:32,460 INFO L78 Accepts]: Start accepts. Automaton has 15539 states and 18446 transitions. Word has length 280 [2023-12-21 11:34:32,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:34:32,460 INFO L495 AbstractCegarLoop]: Abstraction has 15539 states and 18446 transitions. [2023-12-21 11:34:32,461 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) [2023-12-21 11:34:32,461 INFO L276 IsEmpty]: Start isEmpty. Operand 15539 states and 18446 transitions. [2023-12-21 11:34:32,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2023-12-21 11:34:32,468 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:34:32,468 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] [2023-12-21 11:34:32,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2023-12-21 11:34:32,468 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:34:32,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:34:32,469 INFO L85 PathProgramCache]: Analyzing trace with hash -920599164, now seen corresponding path program 1 times [2023-12-21 11:34:32,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:34:32,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134411972] [2023-12-21 11:34:32,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:34:32,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:34:32,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:32,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:34:32,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:32,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-21 11:34:32,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:32,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-21 11:34:32,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:32,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-21 11:34:32,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:32,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-21 11:34:32,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:32,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 11:34:32,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:32,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-21 11:34:32,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:32,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-21 11:34:32,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:32,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-21 11:34:32,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:32,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-21 11:34:32,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:32,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 11:34:32,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:32,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-12-21 11:34:32,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:32,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2023-12-21 11:34:32,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:32,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-12-21 11:34:32,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:32,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2023-12-21 11:34:32,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:32,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2023-12-21 11:34:32,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:32,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2023-12-21 11:34:32,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:32,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2023-12-21 11:34:32,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:32,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2023-12-21 11:34:32,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:32,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2023-12-21 11:34:32,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:32,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2023-12-21 11:34:32,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:32,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2023-12-21 11:34:32,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:32,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2023-12-21 11:34:32,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:32,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2023-12-21 11:34:32,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:32,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2023-12-21 11:34:32,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:32,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2023-12-21 11:34:32,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:32,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2023-12-21 11:34:32,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:32,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2023-12-21 11:34:32,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:32,865 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 35 proven. 51 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2023-12-21 11:34:32,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:34:32,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134411972] [2023-12-21 11:34:32,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134411972] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:34:32,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1485213895] [2023-12-21 11:34:32,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:34:32,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:34:32,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:34:32,869 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) [2023-12-21 11:34:32,882 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2023-12-21 11:34:33,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:33,093 INFO L262 TraceCheckSpWp]: Trace formula consists of 1067 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-21 11:34:33,097 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:34:33,491 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 15 proven. 298 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-12-21 11:34:33,492 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:34:34,026 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 35 proven. 51 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2023-12-21 11:34:34,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1485213895] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:34:34,026 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:34:34,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 23 [2023-12-21 11:34:34,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277870906] [2023-12-21 11:34:34,026 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:34:34,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-21 11:34:34,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:34:34,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-21 11:34:34,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=437, Unknown=0, NotChecked=0, Total=506 [2023-12-21 11:34:34,028 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) [2023-12-21 11:34:40,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:34:40,289 INFO L93 Difference]: Finished difference Result 29355 states and 34973 transitions. [2023-12-21 11:34:40,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2023-12-21 11:34:40,290 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 [2023-12-21 11:34:40,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:34:40,330 INFO L225 Difference]: With dead ends: 29355 [2023-12-21 11:34:40,330 INFO L226 Difference]: Without dead ends: 15305 [2023-12-21 11:34:40,347 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 [2023-12-21 11:34:40,347 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, 1.0s IncrementalHoareTripleChecker+Time [2023-12-21 11:34:40,347 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [932 Valid, 3819 Invalid, 2940 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [263 Valid, 2677 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-21 11:34:40,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15305 states. [2023-12-21 11:34:45,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15305 to 15254. [2023-12-21 11:34:45,035 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) [2023-12-21 11:34:45,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15254 states to 15254 states and 18083 transitions. [2023-12-21 11:34:45,064 INFO L78 Accepts]: Start accepts. Automaton has 15254 states and 18083 transitions. Word has length 280 [2023-12-21 11:34:45,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:34:45,064 INFO L495 AbstractCegarLoop]: Abstraction has 15254 states and 18083 transitions. [2023-12-21 11:34:45,064 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) [2023-12-21 11:34:45,064 INFO L276 IsEmpty]: Start isEmpty. Operand 15254 states and 18083 transitions. [2023-12-21 11:34:45,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2023-12-21 11:34:45,071 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:34:45,071 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] [2023-12-21 11:34:45,079 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2023-12-21 11:34:45,277 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 [2023-12-21 11:34:45,277 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:34:45,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:34:45,278 INFO L85 PathProgramCache]: Analyzing trace with hash 278493381, now seen corresponding path program 1 times [2023-12-21 11:34:45,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:34:45,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313864083] [2023-12-21 11:34:45,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:34:45,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:34:45,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:45,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:34:45,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:45,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-21 11:34:45,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:45,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-21 11:34:45,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:45,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-12-21 11:34:45,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:45,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-21 11:34:45,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:45,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-21 11:34:45,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:45,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-21 11:34:45,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:45,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-21 11:34:45,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:45,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-21 11:34:45,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:45,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-21 11:34:45,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:45,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-21 11:34:45,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:45,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-21 11:34:45,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:45,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-12-21 11:34:45,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:45,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-12-21 11:34:45,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:45,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-21 11:34:45,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:45,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2023-12-21 11:34:45,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:45,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2023-12-21 11:34:45,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:45,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2023-12-21 11:34:45,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:45,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2023-12-21 11:34:45,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:45,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2023-12-21 11:34:45,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:45,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2023-12-21 11:34:45,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:45,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2023-12-21 11:34:45,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:45,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2023-12-21 11:34:45,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:45,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2023-12-21 11:34:45,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:45,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2023-12-21 11:34:45,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:45,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2023-12-21 11:34:45,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:45,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2023-12-21 11:34:45,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:45,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2023-12-21 11:34:45,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:45,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2023-12-21 11:34:45,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:45,470 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 393 trivial. 0 not checked. [2023-12-21 11:34:45,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:34:45,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313864083] [2023-12-21 11:34:45,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313864083] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:34:45,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:34:45,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 11:34:45,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992580749] [2023-12-21 11:34:45,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:34:45,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 11:34:45,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:34:45,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 11:34:45,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 11:34:45,472 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) [2023-12-21 11:34:50,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:34:50,127 INFO L93 Difference]: Finished difference Result 29116 states and 34700 transitions. [2023-12-21 11:34:50,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 11:34:50,127 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 [2023-12-21 11:34:50,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:34:50,158 INFO L225 Difference]: With dead ends: 29116 [2023-12-21 11:34:50,158 INFO L226 Difference]: Without dead ends: 15072 [2023-12-21 11:34:50,174 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 [2023-12-21 11:34:50,174 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 [2023-12-21 11:34:50,175 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] [2023-12-21 11:34:50,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15072 states. [2023-12-21 11:34:54,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15072 to 15072. [2023-12-21 11:34:54,847 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) [2023-12-21 11:34:54,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15072 states to 15072 states and 17537 transitions. [2023-12-21 11:34:54,873 INFO L78 Accepts]: Start accepts. Automaton has 15072 states and 17537 transitions. Word has length 284 [2023-12-21 11:34:54,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:34:54,874 INFO L495 AbstractCegarLoop]: Abstraction has 15072 states and 17537 transitions. [2023-12-21 11:34:54,874 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) [2023-12-21 11:34:54,874 INFO L276 IsEmpty]: Start isEmpty. Operand 15072 states and 17537 transitions. [2023-12-21 11:34:54,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2023-12-21 11:34:54,880 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:34:54,881 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] [2023-12-21 11:34:54,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2023-12-21 11:34:54,881 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:34:54,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:34:54,881 INFO L85 PathProgramCache]: Analyzing trace with hash -2070541697, now seen corresponding path program 1 times [2023-12-21 11:34:54,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:34:54,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965799443] [2023-12-21 11:34:54,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:34:54,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:34:54,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:55,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:34:55,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:55,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-21 11:34:55,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:55,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-21 11:34:55,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:55,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-21 11:34:55,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:55,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-21 11:34:55,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:55,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 11:34:55,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:55,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-21 11:34:55,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:55,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-21 11:34:55,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:55,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-21 11:34:55,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:55,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-21 11:34:55,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:55,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 11:34:55,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:55,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-12-21 11:34:55,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:55,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2023-12-21 11:34:55,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:55,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-12-21 11:34:55,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:55,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2023-12-21 11:34:55,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:55,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2023-12-21 11:34:55,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:55,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2023-12-21 11:34:55,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:55,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2023-12-21 11:34:55,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:55,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2023-12-21 11:34:55,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:55,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2023-12-21 11:34:55,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:55,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2023-12-21 11:34:55,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:55,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2023-12-21 11:34:55,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:55,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2023-12-21 11:34:55,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:55,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2023-12-21 11:34:55,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:55,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2023-12-21 11:34:55,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:55,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2023-12-21 11:34:55,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:55,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2023-12-21 11:34:55,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:55,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2023-12-21 11:34:55,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:55,257 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 35 proven. 51 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2023-12-21 11:34:55,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:34:55,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965799443] [2023-12-21 11:34:55,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965799443] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:34:55,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [731789140] [2023-12-21 11:34:55,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:34:55,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:34:55,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:34:55,274 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) [2023-12-21 11:34:55,275 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2023-12-21 11:34:55,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:34:55,495 INFO L262 TraceCheckSpWp]: Trace formula consists of 1071 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-21 11:34:55,498 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:34:55,887 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 22 proven. 291 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-12-21 11:34:55,887 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:34:56,241 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 35 proven. 51 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2023-12-21 11:34:56,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [731789140] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:34:56,242 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:34:56,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 9] total 18 [2023-12-21 11:34:56,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141668709] [2023-12-21 11:34:56,242 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:34:56,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-21 11:34:56,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:34:56,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-21 11:34:56,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2023-12-21 11:34:56,243 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) [2023-12-21 11:35:01,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:35:01,907 INFO L93 Difference]: Finished difference Result 29271 states and 34190 transitions. [2023-12-21 11:35:01,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-21 11:35:01,907 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 [2023-12-21 11:35:01,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:35:01,931 INFO L225 Difference]: With dead ends: 29271 [2023-12-21 11:35:01,931 INFO L226 Difference]: Without dead ends: 15684 [2023-12-21 11:35:01,941 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 [2023-12-21 11:35:01,941 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 [2023-12-21 11:35:01,941 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] [2023-12-21 11:35:01,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15684 states. [2023-12-21 11:35:06,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15684 to 14892. [2023-12-21 11:35:06,459 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) [2023-12-21 11:35:06,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14892 states to 14892 states and 17319 transitions. [2023-12-21 11:35:06,486 INFO L78 Accepts]: Start accepts. Automaton has 14892 states and 17319 transitions. Word has length 282 [2023-12-21 11:35:06,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:35:06,486 INFO L495 AbstractCegarLoop]: Abstraction has 14892 states and 17319 transitions. [2023-12-21 11:35:06,487 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) [2023-12-21 11:35:06,487 INFO L276 IsEmpty]: Start isEmpty. Operand 14892 states and 17319 transitions. [2023-12-21 11:35:06,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2023-12-21 11:35:06,493 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:35:06,493 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] [2023-12-21 11:35:06,500 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2023-12-21 11:35:06,700 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 [2023-12-21 11:35:06,701 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:35:06,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:35:06,701 INFO L85 PathProgramCache]: Analyzing trace with hash -1857122069, now seen corresponding path program 1 times [2023-12-21 11:35:06,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:35:06,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49928575] [2023-12-21 11:35:06,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:35:06,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:35:06,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:08,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:35:08,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:08,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-21 11:35:08,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:08,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-21 11:35:08,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:08,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-12-21 11:35:08,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:08,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-21 11:35:08,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:08,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-21 11:35:08,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:08,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-21 11:35:08,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:08,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-21 11:35:08,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:08,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-21 11:35:08,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:08,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-21 11:35:08,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:08,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-21 11:35:08,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:08,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-21 11:35:08,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:08,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-12-21 11:35:08,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:08,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-12-21 11:35:08,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:08,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2023-12-21 11:35:08,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:08,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2023-12-21 11:35:08,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:08,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2023-12-21 11:35:08,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:08,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2023-12-21 11:35:08,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:08,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2023-12-21 11:35:08,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:08,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2023-12-21 11:35:08,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:08,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2023-12-21 11:35:08,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:08,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2023-12-21 11:35:08,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:08,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2023-12-21 11:35:08,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:08,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2023-12-21 11:35:08,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:08,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2023-12-21 11:35:08,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:08,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2023-12-21 11:35:08,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:08,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2023-12-21 11:35:08,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:08,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2023-12-21 11:35:08,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:08,191 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 50 proven. 47 refuted. 0 times theorem prover too weak. 278 trivial. 0 not checked. [2023-12-21 11:35:08,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:35:08,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49928575] [2023-12-21 11:35:08,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49928575] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:35:08,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1681000949] [2023-12-21 11:35:08,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:35:08,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:35:08,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:35:08,193 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) [2023-12-21 11:35:08,196 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2023-12-21 11:35:08,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:08,399 INFO L262 TraceCheckSpWp]: Trace formula consists of 1098 conjuncts, 59 conjunts are in the unsatisfiable core [2023-12-21 11:35:08,402 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:35:09,225 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 180 proven. 142 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2023-12-21 11:35:09,225 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:35:11,494 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 50 proven. 47 refuted. 0 times theorem prover too weak. 278 trivial. 0 not checked. [2023-12-21 11:35:11,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1681000949] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:35:11,495 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:35:11,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16, 15] total 33 [2023-12-21 11:35:11,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982370673] [2023-12-21 11:35:11,495 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:35:11,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-12-21 11:35:11,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:35:11,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-12-21 11:35:11,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=915, Unknown=0, NotChecked=0, Total=1056 [2023-12-21 11:35:11,496 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) [2023-12-21 11:35:19,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:35:19,984 INFO L93 Difference]: Finished difference Result 29100 states and 33962 transitions. [2023-12-21 11:35:19,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2023-12-21 11:35:19,985 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 [2023-12-21 11:35:19,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:35:20,013 INFO L225 Difference]: With dead ends: 29100 [2023-12-21 11:35:20,013 INFO L226 Difference]: Without dead ends: 15693 [2023-12-21 11:35:20,027 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 707 GetRequests, 617 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2368 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1163, Invalid=7209, Unknown=0, NotChecked=0, Total=8372 [2023-12-21 11:35:20,027 INFO L413 NwaCegarLoop]: 538 mSDtfsCounter, 1334 mSDsluCounter, 5862 mSDsCounter, 0 mSdLazyCounter, 3876 mSolverCounterSat, 479 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s 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, 2.2s IncrementalHoareTripleChecker+Time [2023-12-21 11:35:20,027 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1334 Valid, 6400 Invalid, 4355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [479 Valid, 3876 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-21 11:35:20,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15693 states. [2023-12-21 11:35:24,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15693 to 15281. [2023-12-21 11:35:24,671 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) [2023-12-21 11:35:24,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15281 states to 15281 states and 17772 transitions. [2023-12-21 11:35:24,695 INFO L78 Accepts]: Start accepts. Automaton has 15281 states and 17772 transitions. Word has length 283 [2023-12-21 11:35:24,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:35:24,696 INFO L495 AbstractCegarLoop]: Abstraction has 15281 states and 17772 transitions. [2023-12-21 11:35:24,696 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) [2023-12-21 11:35:24,696 INFO L276 IsEmpty]: Start isEmpty. Operand 15281 states and 17772 transitions. [2023-12-21 11:35:24,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2023-12-21 11:35:24,703 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:35:24,703 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] [2023-12-21 11:35:24,711 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2023-12-21 11:35:24,904 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 [2023-12-21 11:35:24,904 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:35:24,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:35:24,905 INFO L85 PathProgramCache]: Analyzing trace with hash 1248171352, now seen corresponding path program 1 times [2023-12-21 11:35:24,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:35:24,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740339654] [2023-12-21 11:35:24,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:35:24,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:35:24,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:25,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:35:25,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:25,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-21 11:35:25,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:25,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-21 11:35:25,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:25,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-12-21 11:35:25,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:25,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-21 11:35:25,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:25,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-21 11:35:25,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:25,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-21 11:35:25,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:25,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-21 11:35:25,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:25,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-21 11:35:25,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:25,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-21 11:35:25,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:25,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-21 11:35:25,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:25,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-21 11:35:25,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:25,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-12-21 11:35:25,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:25,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-12-21 11:35:25,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:25,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-21 11:35:25,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:25,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2023-12-21 11:35:25,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:25,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2023-12-21 11:35:25,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:25,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2023-12-21 11:35:25,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:25,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2023-12-21 11:35:25,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:25,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2023-12-21 11:35:25,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:25,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2023-12-21 11:35:25,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:25,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2023-12-21 11:35:25,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:25,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2023-12-21 11:35:25,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:25,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2023-12-21 11:35:25,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:25,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2023-12-21 11:35:25,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:25,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2023-12-21 11:35:25,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:25,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2023-12-21 11:35:25,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:25,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2023-12-21 11:35:25,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:25,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2023-12-21 11:35:25,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:25,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2023-12-21 11:35:25,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:25,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2023-12-21 11:35:25,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:25,140 INFO L134 CoverageAnalysis]: Checked inductivity of 494 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 476 trivial. 0 not checked. [2023-12-21 11:35:25,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:35:25,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740339654] [2023-12-21 11:35:25,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740339654] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:35:25,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:35:25,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 11:35:25,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136774079] [2023-12-21 11:35:25,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:35:25,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 11:35:25,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:35:25,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 11:35:25,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 11:35:25,142 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) [2023-12-21 11:35:29,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:35:29,717 INFO L93 Difference]: Finished difference Result 29168 states and 34076 transitions. [2023-12-21 11:35:29,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 11:35:29,718 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 [2023-12-21 11:35:29,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:35:29,747 INFO L225 Difference]: With dead ends: 29168 [2023-12-21 11:35:29,747 INFO L226 Difference]: Without dead ends: 15097 [2023-12-21 11:35:29,763 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 [2023-12-21 11:35:29,764 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 [2023-12-21 11:35:29,764 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] [2023-12-21 11:35:29,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15097 states. [2023-12-21 11:35:34,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15097 to 14722. [2023-12-21 11:35:34,152 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) [2023-12-21 11:35:34,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14722 states to 14722 states and 16755 transitions. [2023-12-21 11:35:34,176 INFO L78 Accepts]: Start accepts. Automaton has 14722 states and 16755 transitions. Word has length 300 [2023-12-21 11:35:34,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:35:34,176 INFO L495 AbstractCegarLoop]: Abstraction has 14722 states and 16755 transitions. [2023-12-21 11:35:34,176 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) [2023-12-21 11:35:34,176 INFO L276 IsEmpty]: Start isEmpty. Operand 14722 states and 16755 transitions. [2023-12-21 11:35:34,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2023-12-21 11:35:34,185 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:35:34,186 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] [2023-12-21 11:35:34,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2023-12-21 11:35:34,186 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:35:34,186 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:35:34,186 INFO L85 PathProgramCache]: Analyzing trace with hash -2075362321, now seen corresponding path program 1 times [2023-12-21 11:35:34,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:35:34,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457468858] [2023-12-21 11:35:34,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:35:34,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:35:34,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:34,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:35:34,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:34,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-21 11:35:34,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:34,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-21 11:35:34,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:34,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-12-21 11:35:34,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:34,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-21 11:35:34,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:34,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-21 11:35:34,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:34,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-21 11:35:34,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:34,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-21 11:35:34,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:34,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-21 11:35:34,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:34,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-21 11:35:34,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:34,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-21 11:35:34,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:34,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-21 11:35:34,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:34,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-12-21 11:35:34,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:34,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-12-21 11:35:34,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:34,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-21 11:35:34,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:34,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2023-12-21 11:35:34,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:34,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2023-12-21 11:35:34,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:34,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2023-12-21 11:35:34,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:34,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2023-12-21 11:35:34,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:34,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2023-12-21 11:35:34,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:34,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2023-12-21 11:35:34,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:34,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2023-12-21 11:35:34,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:34,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2023-12-21 11:35:34,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:34,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2023-12-21 11:35:34,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:34,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2023-12-21 11:35:34,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:34,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2023-12-21 11:35:34,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:34,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2023-12-21 11:35:34,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:34,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2023-12-21 11:35:34,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:34,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2023-12-21 11:35:34,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:34,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2023-12-21 11:35:34,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:34,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2023-12-21 11:35:34,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:34,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2023-12-21 11:35:34,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:34,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2023-12-21 11:35:34,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:34,363 INFO L134 CoverageAnalysis]: Checked inductivity of 551 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 529 trivial. 0 not checked. [2023-12-21 11:35:34,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:35:34,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457468858] [2023-12-21 11:35:34,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457468858] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 11:35:34,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 11:35:34,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 11:35:34,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363340526] [2023-12-21 11:35:34,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 11:35:34,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 11:35:34,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:35:34,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 11:35:34,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 11:35:34,365 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) [2023-12-21 11:35:38,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:35:38,778 INFO L93 Difference]: Finished difference Result 28003 states and 31918 transitions. [2023-12-21 11:35:38,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 11:35:38,778 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 [2023-12-21 11:35:38,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:35:38,812 INFO L225 Difference]: With dead ends: 28003 [2023-12-21 11:35:38,812 INFO L226 Difference]: Without dead ends: 14491 [2023-12-21 11:35:38,832 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 [2023-12-21 11:35:38,834 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 [2023-12-21 11:35:38,835 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] [2023-12-21 11:35:38,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14491 states. [2023-12-21 11:35:43,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14491 to 14075. [2023-12-21 11:35:43,176 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) [2023-12-21 11:35:43,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14075 states to 14075 states and 15783 transitions. [2023-12-21 11:35:43,197 INFO L78 Accepts]: Start accepts. Automaton has 14075 states and 15783 transitions. Word has length 316 [2023-12-21 11:35:43,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:35:43,198 INFO L495 AbstractCegarLoop]: Abstraction has 14075 states and 15783 transitions. [2023-12-21 11:35:43,198 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) [2023-12-21 11:35:43,198 INFO L276 IsEmpty]: Start isEmpty. Operand 14075 states and 15783 transitions. [2023-12-21 11:35:43,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2023-12-21 11:35:43,208 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:35:43,208 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] [2023-12-21 11:35:43,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2023-12-21 11:35:43,208 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:35:43,208 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:35:43,209 INFO L85 PathProgramCache]: Analyzing trace with hash 384173242, now seen corresponding path program 1 times [2023-12-21 11:35:43,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:35:43,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718012066] [2023-12-21 11:35:43,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:35:43,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:35:43,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:43,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:35:43,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:43,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-21 11:35:43,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:43,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-21 11:35:43,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:43,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-12-21 11:35:43,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:43,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-21 11:35:43,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:43,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-21 11:35:43,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:43,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-21 11:35:43,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:43,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-21 11:35:43,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:43,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-21 11:35:43,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:43,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-21 11:35:43,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:43,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-21 11:35:43,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:43,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-21 11:35:43,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:43,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-12-21 11:35:43,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:43,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-12-21 11:35:43,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:43,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-12-21 11:35:43,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:43,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2023-12-21 11:35:43,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:43,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2023-12-21 11:35:43,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:43,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2023-12-21 11:35:43,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:43,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2023-12-21 11:35:43,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:43,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2023-12-21 11:35:43,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:43,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2023-12-21 11:35:43,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:43,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2023-12-21 11:35:43,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:43,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2023-12-21 11:35:43,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:43,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2023-12-21 11:35:43,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:43,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2023-12-21 11:35:43,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:43,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2023-12-21 11:35:43,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:43,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2023-12-21 11:35:43,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:43,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2023-12-21 11:35:43,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:43,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2023-12-21 11:35:43,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:43,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2023-12-21 11:35:43,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:43,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2023-12-21 11:35:43,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:43,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2023-12-21 11:35:43,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:43,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2023-12-21 11:35:43,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:43,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2023-12-21 11:35:43,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:43,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2023-12-21 11:35:43,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:43,480 INFO L134 CoverageAnalysis]: Checked inductivity of 592 backedges. 94 proven. 20 refuted. 0 times theorem prover too weak. 478 trivial. 0 not checked. [2023-12-21 11:35:43,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:35:43,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718012066] [2023-12-21 11:35:43,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718012066] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:35:43,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1217664200] [2023-12-21 11:35:43,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:35:43,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:35:43,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:35:43,489 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) [2023-12-21 11:35:43,490 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2023-12-21 11:35:43,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:43,709 INFO L262 TraceCheckSpWp]: Trace formula consists of 1173 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-21 11:35:43,713 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:35:43,986 INFO L134 CoverageAnalysis]: Checked inductivity of 592 backedges. 452 proven. 8 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2023-12-21 11:35:43,987 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:35:44,102 INFO L134 CoverageAnalysis]: Checked inductivity of 592 backedges. 96 proven. 18 refuted. 0 times theorem prover too weak. 478 trivial. 0 not checked. [2023-12-21 11:35:44,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1217664200] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:35:44,102 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:35:44,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 21 [2023-12-21 11:35:44,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293026093] [2023-12-21 11:35:44,102 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:35:44,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-21 11:35:44,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:35:44,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-21 11:35:44,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=358, Unknown=0, NotChecked=0, Total=420 [2023-12-21 11:35:44,103 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) [2023-12-21 11:35:52,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:35:52,168 INFO L93 Difference]: Finished difference Result 39201 states and 44152 transitions. [2023-12-21 11:35:52,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-21 11:35:52,169 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 [2023-12-21 11:35:52,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:35:52,222 INFO L225 Difference]: With dead ends: 39201 [2023-12-21 11:35:52,222 INFO L226 Difference]: Without dead ends: 26336 [2023-12-21 11:35:52,236 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 [2023-12-21 11:35:52,236 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, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 11:35:52,236 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [240 Valid, 5869 Invalid, 949 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 940 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 11:35:52,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26336 states. [2023-12-21 11:35:59,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26336 to 22220. [2023-12-21 11:35:59,067 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) [2023-12-21 11:35:59,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22220 states to 22220 states and 24962 transitions. [2023-12-21 11:35:59,105 INFO L78 Accepts]: Start accepts. Automaton has 22220 states and 24962 transitions. Word has length 326 [2023-12-21 11:35:59,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:35:59,105 INFO L495 AbstractCegarLoop]: Abstraction has 22220 states and 24962 transitions. [2023-12-21 11:35:59,105 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) [2023-12-21 11:35:59,105 INFO L276 IsEmpty]: Start isEmpty. Operand 22220 states and 24962 transitions. [2023-12-21 11:35:59,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2023-12-21 11:35:59,118 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:35:59,119 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] [2023-12-21 11:35:59,127 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2023-12-21 11:35:59,325 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 [2023-12-21 11:35:59,326 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:35:59,326 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:35:59,326 INFO L85 PathProgramCache]: Analyzing trace with hash -2024119180, now seen corresponding path program 1 times [2023-12-21 11:35:59,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:35:59,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036109197] [2023-12-21 11:35:59,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:35:59,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:35:59,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:59,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:35:59,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:59,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-21 11:35:59,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:59,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-21 11:35:59,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:59,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-21 11:35:59,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:59,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-21 11:35:59,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:59,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 11:35:59,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:59,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-21 11:35:59,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:59,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-21 11:35:59,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:59,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-21 11:35:59,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:59,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-21 11:35:59,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:59,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 11:35:59,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:59,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-21 11:35:59,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:59,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-12-21 11:35:59,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:59,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2023-12-21 11:35:59,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:59,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2023-12-21 11:35:59,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:59,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2023-12-21 11:35:59,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:59,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2023-12-21 11:35:59,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:59,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2023-12-21 11:35:59,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:59,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2023-12-21 11:35:59,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:59,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2023-12-21 11:35:59,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:59,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2023-12-21 11:35:59,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:59,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2023-12-21 11:35:59,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:59,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2023-12-21 11:35:59,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:59,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2023-12-21 11:35:59,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:59,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2023-12-21 11:35:59,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:59,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2023-12-21 11:35:59,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:59,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2023-12-21 11:35:59,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:59,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2023-12-21 11:35:59,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:59,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2023-12-21 11:35:59,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:59,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2023-12-21 11:35:59,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:59,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2023-12-21 11:35:59,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:59,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2023-12-21 11:35:59,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:59,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2023-12-21 11:35:59,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:59,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2023-12-21 11:35:59,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:59,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2023-12-21 11:35:59,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:59,563 INFO L134 CoverageAnalysis]: Checked inductivity of 591 backedges. 73 proven. 15 refuted. 0 times theorem prover too weak. 503 trivial. 0 not checked. [2023-12-21 11:35:59,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:35:59,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036109197] [2023-12-21 11:35:59,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036109197] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:35:59,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [29397143] [2023-12-21 11:35:59,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:35:59,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:35:59,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:35:59,565 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) [2023-12-21 11:35:59,612 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2023-12-21 11:35:59,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:35:59,799 INFO L262 TraceCheckSpWp]: Trace formula consists of 1156 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-21 11:35:59,802 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:35:59,942 INFO L134 CoverageAnalysis]: Checked inductivity of 591 backedges. 420 proven. 62 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2023-12-21 11:35:59,942 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:36:00,094 INFO L134 CoverageAnalysis]: Checked inductivity of 591 backedges. 73 proven. 15 refuted. 0 times theorem prover too weak. 503 trivial. 0 not checked. [2023-12-21 11:36:00,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [29397143] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:36:00,094 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:36:00,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 16 [2023-12-21 11:36:00,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178477030] [2023-12-21 11:36:00,095 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:36:00,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-21 11:36:00,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:36:00,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-21 11:36:00,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2023-12-21 11:36:00,096 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) [2023-12-21 11:36:15,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:36:15,869 INFO L93 Difference]: Finished difference Result 70757 states and 79067 transitions. [2023-12-21 11:36:15,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-21 11:36:15,870 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 [2023-12-21 11:36:15,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:36:15,967 INFO L225 Difference]: With dead ends: 70757 [2023-12-21 11:36:15,968 INFO L226 Difference]: Without dead ends: 49747 [2023-12-21 11:36:15,991 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 754 GetRequests, 726 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=170, Invalid=700, Unknown=0, NotChecked=0, Total=870 [2023-12-21 11:36:15,991 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, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 11:36:15,992 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [593 Valid, 3461 Invalid, 961 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 822 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 11:36:16,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49747 states. [2023-12-21 11:36:28,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49747 to 39026. [2023-12-21 11:36:28,606 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) [2023-12-21 11:36:28,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39026 states to 39026 states and 43516 transitions. [2023-12-21 11:36:28,671 INFO L78 Accepts]: Start accepts. Automaton has 39026 states and 43516 transitions. Word has length 326 [2023-12-21 11:36:28,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:36:28,672 INFO L495 AbstractCegarLoop]: Abstraction has 39026 states and 43516 transitions. [2023-12-21 11:36:28,672 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) [2023-12-21 11:36:28,672 INFO L276 IsEmpty]: Start isEmpty. Operand 39026 states and 43516 transitions. [2023-12-21 11:36:28,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2023-12-21 11:36:28,696 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:36:28,696 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] [2023-12-21 11:36:28,702 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2023-12-21 11:36:28,902 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 [2023-12-21 11:36:28,903 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:36:28,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:36:28,903 INFO L85 PathProgramCache]: Analyzing trace with hash 16153060, now seen corresponding path program 1 times [2023-12-21 11:36:28,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:36:28,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913020842] [2023-12-21 11:36:28,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:36:28,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:36:28,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:29,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:36:29,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:29,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-12-21 11:36:29,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:29,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-12-21 11:36:29,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:29,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-21 11:36:29,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:29,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-12-21 11:36:29,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:29,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 11:36:29,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:29,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-12-21 11:36:29,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:29,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-12-21 11:36:29,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:29,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-12-21 11:36:29,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:29,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-12-21 11:36:29,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:29,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 11:36:29,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:29,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-12-21 11:36:29,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:29,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-12-21 11:36:29,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:29,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2023-12-21 11:36:29,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:29,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2023-12-21 11:36:29,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:29,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2023-12-21 11:36:29,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:29,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2023-12-21 11:36:29,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:29,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2023-12-21 11:36:29,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:29,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2023-12-21 11:36:29,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:29,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2023-12-21 11:36:29,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:29,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2023-12-21 11:36:29,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:29,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2023-12-21 11:36:29,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:29,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2023-12-21 11:36:29,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:29,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2023-12-21 11:36:29,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:29,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2023-12-21 11:36:29,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:29,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2023-12-21 11:36:29,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:29,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2023-12-21 11:36:29,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:29,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2023-12-21 11:36:29,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:29,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2023-12-21 11:36:29,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:29,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2023-12-21 11:36:29,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:29,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2023-12-21 11:36:29,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:29,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2023-12-21 11:36:29,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:29,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2023-12-21 11:36:29,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:29,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2023-12-21 11:36:29,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:29,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2023-12-21 11:36:29,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:29,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2023-12-21 11:36:29,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:29,161 INFO L134 CoverageAnalysis]: Checked inductivity of 643 backedges. 81 proven. 23 refuted. 0 times theorem prover too weak. 539 trivial. 0 not checked. [2023-12-21 11:36:29,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:36:29,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913020842] [2023-12-21 11:36:29,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913020842] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:36:29,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [324406021] [2023-12-21 11:36:29,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:36:29,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:36:29,162 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:36:29,163 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) [2023-12-21 11:36:29,189 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2023-12-21 11:36:29,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:36:29,386 INFO L262 TraceCheckSpWp]: Trace formula consists of 1174 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-21 11:36:29,390 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:36:29,937 INFO L134 CoverageAnalysis]: Checked inductivity of 643 backedges. 124 proven. 428 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2023-12-21 11:36:29,937 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:36:30,320 INFO L134 CoverageAnalysis]: Checked inductivity of 643 backedges. 46 proven. 89 refuted. 0 times theorem prover too weak. 508 trivial. 0 not checked. [2023-12-21 11:36:30,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [324406021] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:36:30,320 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:36:30,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 14, 13] total 30 [2023-12-21 11:36:30,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784113894] [2023-12-21 11:36:30,320 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:36:30,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-12-21 11:36:30,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:36:30,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-12-21 11:36:30,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=791, Unknown=0, NotChecked=0, Total=870 [2023-12-21 11:36:30,322 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) [2023-12-21 11:36:54,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 11:36:54,904 INFO L93 Difference]: Finished difference Result 94958 states and 105513 transitions. [2023-12-21 11:36:54,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 148 states. [2023-12-21 11:36:54,905 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 [2023-12-21 11:36:54,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 11:36:55,031 INFO L225 Difference]: With dead ends: 94958 [2023-12-21 11:36:55,031 INFO L226 Difference]: Without dead ends: 57473 [2023-12-21 11:36:55,074 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 934 GetRequests, 762 SyntacticMatches, 0 SemanticMatches, 172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9945 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=2590, Invalid=27512, Unknown=0, NotChecked=0, Total=30102 [2023-12-21 11:36:55,074 INFO L413 NwaCegarLoop]: 1158 mSDtfsCounter, 3785 mSDsluCounter, 15881 mSDsCounter, 0 mSdLazyCounter, 5135 mSolverCounterSat, 1301 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3785 SdHoareTripleChecker+Valid, 17039 SdHoareTripleChecker+Invalid, 6436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1301 IncrementalHoareTripleChecker+Valid, 5135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-21 11:36:55,074 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3785 Valid, 17039 Invalid, 6436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1301 Valid, 5135 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-21 11:36:55,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57473 states. [2023-12-21 11:37:09,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57473 to 43491. [2023-12-21 11:37:09,471 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) [2023-12-21 11:37:09,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43491 states to 43491 states and 48247 transitions. [2023-12-21 11:37:09,543 INFO L78 Accepts]: Start accepts. Automaton has 43491 states and 48247 transitions. Word has length 334 [2023-12-21 11:37:09,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 11:37:09,544 INFO L495 AbstractCegarLoop]: Abstraction has 43491 states and 48247 transitions. [2023-12-21 11:37:09,544 INFO L496 AbstractCegarLoop]: INTERPOLANT 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) [2023-12-21 11:37:09,544 INFO L276 IsEmpty]: Start isEmpty. Operand 43491 states and 48247 transitions. [2023-12-21 11:37:09,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2023-12-21 11:37:09,568 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 11:37:09,568 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 11:37:09,578 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2023-12-21 11:37:09,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77,42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:37:09,773 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 11:37:09,774 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 11:37:09,774 INFO L85 PathProgramCache]: Analyzing trace with hash -588962646, now seen corresponding path program 1 times [2023-12-21 11:37:09,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 11:37:09,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852152229] [2023-12-21 11:37:09,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:37:09,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 11:37:09,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:37:10,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 11:37:10,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:37:10,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-12-21 11:37:10,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:37:10,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-12-21 11:37:10,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:37:10,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-12-21 11:37:10,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:37:10,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-12-21 11:37:10,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:37:10,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-12-21 11:37:10,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:37:10,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-21 11:37:10,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:37:10,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-12-21 11:37:10,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:37:10,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-12-21 11:37:10,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:37:10,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-12-21 11:37:10,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:37:10,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-12-21 11:37:10,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:37:10,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-21 11:37:10,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:37:10,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-12-21 11:37:10,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:37:10,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-12-21 11:37:10,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:37:10,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2023-12-21 11:37:10,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:37:10,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2023-12-21 11:37:10,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:37:10,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2023-12-21 11:37:10,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:37:10,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2023-12-21 11:37:10,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:37:10,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2023-12-21 11:37:10,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:37:10,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2023-12-21 11:37:10,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:37:10,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2023-12-21 11:37:10,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:37:10,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2023-12-21 11:37:10,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:37:10,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2023-12-21 11:37:10,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:37:10,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2023-12-21 11:37:10,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:37:10,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2023-12-21 11:37:10,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:37:10,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2023-12-21 11:37:10,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:37:10,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2023-12-21 11:37:10,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:37:10,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2023-12-21 11:37:10,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:37:10,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2023-12-21 11:37:10,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:37:10,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2023-12-21 11:37:10,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:37:10,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2023-12-21 11:37:10,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:37:10,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2023-12-21 11:37:10,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:37:10,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2023-12-21 11:37:10,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:37:10,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2023-12-21 11:37:10,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:37:10,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2023-12-21 11:37:10,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:37:10,151 INFO L134 CoverageAnalysis]: Checked inductivity of 609 backedges. 108 proven. 71 refuted. 0 times theorem prover too weak. 430 trivial. 0 not checked. [2023-12-21 11:37:10,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 11:37:10,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852152229] [2023-12-21 11:37:10,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852152229] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 11:37:10,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1228147155] [2023-12-21 11:37:10,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 11:37:10,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:37:10,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 11:37:10,153 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 11:37:10,155 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2023-12-21 11:37:10,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 11:37:10,406 INFO L262 TraceCheckSpWp]: Trace formula consists of 1321 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-21 11:37:10,410 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 11:37:10,665 INFO L134 CoverageAnalysis]: Checked inductivity of 609 backedges. 278 proven. 265 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-12-21 11:37:10,666 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 11:37:10,889 INFO L134 CoverageAnalysis]: Checked inductivity of 609 backedges. 108 proven. 71 refuted. 0 times theorem prover too weak. 430 trivial. 0 not checked. [2023-12-21 11:37:10,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1228147155] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 11:37:10,890 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 11:37:10,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2023-12-21 11:37:10,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886628238] [2023-12-21 11:37:10,890 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 11:37:10,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-21 11:37:10,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 11:37:10,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-21 11:37:10,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=441, Unknown=0, NotChecked=0, Total=506 [2023-12-21 11:37:10,892 INFO L87 Difference]: Start difference. First operand 43491 states and 48247 transitions. Second operand has 23 states, 23 states have (on average 18.608695652173914) internal successors, (428), 20 states have internal predecessors, (428), 11 states have call successors, (94), 5 states have call predecessors, (94), 8 states have return successors, (94), 14 states have call predecessors, (94), 11 states have call successors, (94) Received shutdown request... [2023-12-21 11:37:17,207 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-21 11:37:17,207 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 [2023-12-21 11:37:17,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-12-21 11:37:17,212 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 795 GetRequests, 746 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 433 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=396, Invalid=2154, Unknown=0, NotChecked=0, Total=2550 [2023-12-21 11:37:17,212 INFO L413 NwaCegarLoop]: 716 mSDtfsCounter, 1327 mSDsluCounter, 6094 mSDsCounter, 0 mSdLazyCounter, 776 mSolverCounterSat, 296 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1329 SdHoareTripleChecker+Valid, 6810 SdHoareTripleChecker+Invalid, 1072 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 296 IncrementalHoareTripleChecker+Valid, 776 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 11:37:17,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1329 Valid, 6810 Invalid, 1072 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [296 Valid, 776 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 11:37:17,213 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-21 11:37:17,232 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2023-12-21 11:37:17,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 11:37:17,422 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (43491states) and FLOYD_HOARE automaton (currently 32 states, 23 states before enhancement),while ReachableStatesComputation was computing reachable states (25959 states constructed, input type IntersectNwa). [2023-12-21 11:37:17,425 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, 1] [2023-12-21 11:37:17,427 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-21 11:37:17,428 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.12 11:37:17 BoogieIcfgContainer [2023-12-21 11:37:17,428 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-21 11:37:17,428 INFO L158 Benchmark]: Toolchain (without parser) took 812888.65ms. Allocated memory was 182.5MB in the beginning and 6.3GB in the end (delta: 6.1GB). Free memory was 133.7MB in the beginning and 2.5GB in the end (delta: -2.4GB). Peak memory consumption was 3.7GB. Max. memory is 8.0GB. [2023-12-21 11:37:17,428 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 182.5MB. Free memory is still 136.2MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-21 11:37:17,428 INFO L158 Benchmark]: CACSL2BoogieTranslator took 243.12ms. Allocated memory is still 182.5MB. Free memory was 133.7MB in the beginning and 115.5MB in the end (delta: 18.2MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. [2023-12-21 11:37:17,428 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.86ms. Allocated memory is still 182.5MB. Free memory was 115.2MB in the beginning and 111.7MB in the end (delta: 3.5MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-21 11:37:17,428 INFO L158 Benchmark]: Boogie Preprocessor took 62.76ms. Allocated memory is still 182.5MB. Free memory was 111.7MB in the beginning and 107.5MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-12-21 11:37:17,428 INFO L158 Benchmark]: RCFGBuilder took 623.11ms. Allocated memory was 182.5MB in the beginning and 287.3MB in the end (delta: 104.9MB). Free memory was 107.5MB in the beginning and 234.1MB in the end (delta: -126.6MB). Peak memory consumption was 22.4MB. Max. memory is 8.0GB. [2023-12-21 11:37:17,429 INFO L158 Benchmark]: TraceAbstraction took 811911.69ms. Allocated memory was 287.3MB in the beginning and 6.3GB in the end (delta: 6.0GB). Free memory was 233.1MB in the beginning and 2.5GB in the end (delta: -2.3GB). Peak memory consumption was 3.7GB. Max. memory is 8.0GB. [2023-12-21 11:37:17,429 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 182.5MB. Free memory is still 136.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 243.12ms. Allocated memory is still 182.5MB. Free memory was 133.7MB in the beginning and 115.5MB in the end (delta: 18.2MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 38.86ms. Allocated memory is still 182.5MB. Free memory was 115.2MB in the beginning and 111.7MB in the end (delta: 3.5MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 62.76ms. Allocated memory is still 182.5MB. Free memory was 111.7MB in the beginning and 107.5MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * RCFGBuilder took 623.11ms. Allocated memory was 182.5MB in the beginning and 287.3MB in the end (delta: 104.9MB). Free memory was 107.5MB in the beginning and 234.1MB in the end (delta: -126.6MB). Peak memory consumption was 22.4MB. Max. memory is 8.0GB. * TraceAbstraction took 811911.69ms. Allocated memory was 287.3MB in the beginning and 6.3GB in the end (delta: 6.0GB). Free memory was 233.1MB in the beginning and 2.5GB in the end (delta: -2.3GB). Peak memory consumption was 3.7GB. 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 NwaCegarLoop was constructing difference of abstraction (43491states) and FLOYD_HOARE automaton (currently 32 states, 23 states before enhancement),while ReachableStatesComputation was computing reachable states (25959 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 163 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 811.9s, OverallIterations: 79, TraceHistogramMax: 11, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.6s, AutomataDifference: 426.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 70018 SdHoareTripleChecker+Valid, 49.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 69808 mSDsluCounter, 237502 SdHoareTripleChecker+Invalid, 41.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 206942 mSDsCounter, 20813 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 95244 IncrementalHoareTripleChecker+Invalid, 116057 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 20813 mSolverCounterUnsat, 30560 mSDtfsCounter, 95244 mSolverCounterSat, 0.9s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 25007 GetRequests, 22103 SyntacticMatches, 46 SemanticMatches, 2858 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74995 ImplicationChecksByTransitivity, 45.8s 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: 307.5s AutomataMinimizationTime, 78 MinimizatonAttempts, 135047 StatesRemovedByMinimization, 67 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 2.1s SsaConstructionTime, 5.6s SatisfiabilityAnalysisTime, 57.0s InterpolantComputationTime, 23625 NumberOfCodeBlocks, 23625 NumberOfCodeBlocksAsserted, 121 NumberOfCheckSat, 32987 ConstructedInterpolants, 0 QuantifiedInterpolants, 147794 SizeOfPredicates, 184 NumberOfNonLiveVariables, 37928 ConjunctsInSsa, 1009 ConjunctsInUnsatCore, 162 InterpolantComputations, 39 PerfectInterpolantSequences, 31534/37615 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