/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.p+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 02:47:05,724 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 02:47:05,792 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-20 02:47:05,797 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 02:47:05,797 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 02:47:05,819 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 02:47:05,820 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 02:47:05,820 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 02:47:05,821 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 02:47:05,824 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 02:47:05,824 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 02:47:05,824 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 02:47:05,825 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 02:47:05,826 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 02:47:05,826 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 02:47:05,826 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 02:47:05,826 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 02:47:05,827 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 02:47:05,827 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 02:47:05,827 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 02:47:05,827 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 02:47:05,828 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 02:47:05,828 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 02:47:05,828 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 02:47:05,828 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 02:47:05,828 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 02:47:05,829 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 02:47:05,829 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 02:47:05,829 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 02:47:05,830 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 02:47:05,831 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 02:47:05,831 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 02:47:05,831 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 02:47:05,831 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 02:47:05,831 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 02:47:05,831 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 02:47:05,831 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 02:47:05,832 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 02:47:05,832 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 02:47:05,832 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 02:47:05,832 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 02:47:05,833 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 02:47:05,833 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 02:47:05,833 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-20 02:47:06,006 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 02:47:06,019 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 02:47:06,021 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 02:47:06,021 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 02:47:06,022 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 02:47:06,022 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.p+lhb-reducer.c [2023-12-20 02:47:07,044 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 02:47:07,249 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 02:47:07,250 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.p+lhb-reducer.c [2023-12-20 02:47:07,274 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf3232f29/0b20f6cf4513436bba668d3c027c8649/FLAG469220e85 [2023-12-20 02:47:07,290 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf3232f29/0b20f6cf4513436bba668d3c027c8649 [2023-12-20 02:47:07,292 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 02:47:07,293 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 02:47:07,294 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 02:47:07,294 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 02:47:07,299 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 02:47:07,300 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 02:47:07" (1/1) ... [2023-12-20 02:47:07,301 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@712a51fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:47:07, skipping insertion in model container [2023-12-20 02:47:07,301 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 02:47:07" (1/1) ... [2023-12-20 02:47:07,348 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 02:47:07,529 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-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.p+lhb-reducer.c[12887,12900] [2023-12-20 02:47:07,638 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 02:47:07,659 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 02:47:07,781 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-reduced/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.p+lhb-reducer.c[12887,12900] [2023-12-20 02:47:07,852 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 02:47:07,864 INFO L206 MainTranslator]: Completed translation [2023-12-20 02:47:07,865 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:47:07 WrapperNode [2023-12-20 02:47:07,865 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 02:47:07,866 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 02:47:07,866 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 02:47:07,866 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 02:47:07,871 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:47:07" (1/1) ... [2023-12-20 02:47:07,892 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:47:07" (1/1) ... [2023-12-20 02:47:07,958 INFO L138 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1455 [2023-12-20 02:47:07,959 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 02:47:07,959 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 02:47:07,959 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 02:47:07,959 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 02:47:07,967 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:47:07" (1/1) ... [2023-12-20 02:47:07,967 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:47:07" (1/1) ... [2023-12-20 02:47:07,972 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:47:07" (1/1) ... [2023-12-20 02:47:07,999 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-20 02:47:08,000 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:47:07" (1/1) ... [2023-12-20 02:47:08,000 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:47:07" (1/1) ... [2023-12-20 02:47:08,023 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:47:07" (1/1) ... [2023-12-20 02:47:08,028 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:47:07" (1/1) ... [2023-12-20 02:47:08,030 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:47:07" (1/1) ... [2023-12-20 02:47:08,033 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:47:07" (1/1) ... [2023-12-20 02:47:08,044 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 02:47:08,045 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 02:47:08,045 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 02:47:08,045 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 02:47:08,046 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:47:07" (1/1) ... [2023-12-20 02:47:08,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 02:47:08,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 02:47:08,082 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-20 02:47:08,102 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-20 02:47:08,118 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 02:47:08,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 02:47:08,118 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 02:47:08,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 02:47:08,205 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 02:47:08,206 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 02:47:08,938 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 02:47:08,974 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 02:47:08,975 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-20 02:47:08,975 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 02:47:08 BoogieIcfgContainer [2023-12-20 02:47:08,975 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 02:47:08,977 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 02:47:08,977 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 02:47:08,979 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 02:47:08,979 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 02:47:07" (1/3) ... [2023-12-20 02:47:08,980 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d08611c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 02:47:08, skipping insertion in model container [2023-12-20 02:47:08,980 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 02:47:07" (2/3) ... [2023-12-20 02:47:08,980 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d08611c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 02:47:08, skipping insertion in model container [2023-12-20 02:47:08,980 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 02:47:08" (3/3) ... [2023-12-20 02:47:08,981 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.p+lhb-reducer.c [2023-12-20 02:47:08,992 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 02:47:08,992 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-20 02:47:09,040 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 02:47:09,044 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;@66b4e7d9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 02:47:09,045 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-20 02:47:09,049 INFO L276 IsEmpty]: Start isEmpty. Operand has 422 states, 420 states have (on average 1.6452380952380952) internal successors, (691), 421 states have internal predecessors, (691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:47:09,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-12-20 02:47:09,059 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:47:09,059 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:47:09,060 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:47:09,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:47:09,063 INFO L85 PathProgramCache]: Analyzing trace with hash 1487174172, now seen corresponding path program 1 times [2023-12-20 02:47:09,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:47:09,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808889648] [2023-12-20 02:47:09,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:47:09,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:47:09,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:47:09,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:47:09,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:47:09,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808889648] [2023-12-20 02:47:09,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808889648] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:47:09,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:47:09,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 02:47:09,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553936957] [2023-12-20 02:47:09,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:47:09,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 02:47:09,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:47:09,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 02:47:09,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 02:47:09,367 INFO L87 Difference]: Start difference. First operand has 422 states, 420 states have (on average 1.6452380952380952) internal successors, (691), 421 states have internal predecessors, (691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:47:09,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:47:09,511 INFO L93 Difference]: Finished difference Result 821 states and 1335 transitions. [2023-12-20 02:47:09,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 02:47:09,513 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2023-12-20 02:47:09,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:47:09,530 INFO L225 Difference]: With dead ends: 821 [2023-12-20 02:47:09,531 INFO L226 Difference]: Without dead ends: 420 [2023-12-20 02:47:09,537 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 02:47:09,540 INFO L413 NwaCegarLoop]: 683 mSDtfsCounter, 128 mSDsluCounter, 1205 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 1888 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 02:47:09,541 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 1888 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 02:47:09,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2023-12-20 02:47:09,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 420. [2023-12-20 02:47:09,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 420 states, 419 states have (on average 1.5632458233890214) internal successors, (655), 419 states have internal predecessors, (655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:47:09,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 655 transitions. [2023-12-20 02:47:09,594 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 655 transitions. Word has length 106 [2023-12-20 02:47:09,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:47:09,594 INFO L495 AbstractCegarLoop]: Abstraction has 420 states and 655 transitions. [2023-12-20 02:47:09,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:47:09,594 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 655 transitions. [2023-12-20 02:47:09,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-12-20 02:47:09,596 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:47:09,597 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:47:09,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-20 02:47:09,597 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:47:09,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:47:09,597 INFO L85 PathProgramCache]: Analyzing trace with hash 590537494, now seen corresponding path program 1 times [2023-12-20 02:47:09,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:47:09,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865885710] [2023-12-20 02:47:09,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:47:09,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:47:09,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:47:09,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:47:09,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:47:09,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865885710] [2023-12-20 02:47:09,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865885710] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:47:09,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:47:09,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 02:47:09,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173070387] [2023-12-20 02:47:09,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:47:09,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 02:47:09,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:47:09,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 02:47:09,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 02:47:09,770 INFO L87 Difference]: Start difference. First operand 420 states and 655 transitions. Second operand has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:47:09,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:47:09,808 INFO L93 Difference]: Finished difference Result 1044 states and 1650 transitions. [2023-12-20 02:47:09,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 02:47:09,809 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 129 [2023-12-20 02:47:09,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:47:09,812 INFO L225 Difference]: With dead ends: 1044 [2023-12-20 02:47:09,812 INFO L226 Difference]: Without dead ends: 664 [2023-12-20 02:47:09,813 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 02:47:09,814 INFO L413 NwaCegarLoop]: 836 mSDtfsCounter, 473 mSDsluCounter, 524 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 473 SdHoareTripleChecker+Valid, 1360 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 02:47:09,815 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [473 Valid, 1360 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 02:47:09,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 664 states. [2023-12-20 02:47:09,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 664 to 662. [2023-12-20 02:47:09,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 662 states, 661 states have (on average 1.5688350983358548) internal successors, (1037), 661 states have internal predecessors, (1037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:47:09,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 662 states to 662 states and 1037 transitions. [2023-12-20 02:47:09,860 INFO L78 Accepts]: Start accepts. Automaton has 662 states and 1037 transitions. Word has length 129 [2023-12-20 02:47:09,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:47:09,862 INFO L495 AbstractCegarLoop]: Abstraction has 662 states and 1037 transitions. [2023-12-20 02:47:09,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:47:09,862 INFO L276 IsEmpty]: Start isEmpty. Operand 662 states and 1037 transitions. [2023-12-20 02:47:09,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-20 02:47:09,864 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:47:09,864 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:47:09,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-20 02:47:09,865 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:47:09,865 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:47:09,865 INFO L85 PathProgramCache]: Analyzing trace with hash -1340377907, now seen corresponding path program 1 times [2023-12-20 02:47:09,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:47:09,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276988137] [2023-12-20 02:47:09,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:47:09,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:47:09,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:47:09,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:47:09,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:47:09,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276988137] [2023-12-20 02:47:09,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276988137] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:47:09,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:47:09,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 02:47:09,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272175965] [2023-12-20 02:47:09,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:47:09,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 02:47:09,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:47:09,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 02:47:09,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 02:47:09,974 INFO L87 Difference]: Start difference. First operand 662 states and 1037 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:47:10,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:47:10,010 INFO L93 Difference]: Finished difference Result 1678 states and 2651 transitions. [2023-12-20 02:47:10,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 02:47:10,010 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2023-12-20 02:47:10,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:47:10,014 INFO L225 Difference]: With dead ends: 1678 [2023-12-20 02:47:10,014 INFO L226 Difference]: Without dead ends: 1069 [2023-12-20 02:47:10,015 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 02:47:10,017 INFO L413 NwaCegarLoop]: 630 mSDtfsCounter, 459 mSDsluCounter, 499 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 459 SdHoareTripleChecker+Valid, 1129 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 02:47:10,018 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [459 Valid, 1129 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 02:47:10,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1069 states. [2023-12-20 02:47:10,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1069 to 1067. [2023-12-20 02:47:10,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1067 states, 1066 states have (on average 1.5684803001876173) internal successors, (1672), 1066 states have internal predecessors, (1672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:47:10,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1067 states to 1067 states and 1672 transitions. [2023-12-20 02:47:10,038 INFO L78 Accepts]: Start accepts. Automaton has 1067 states and 1672 transitions. Word has length 132 [2023-12-20 02:47:10,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:47:10,042 INFO L495 AbstractCegarLoop]: Abstraction has 1067 states and 1672 transitions. [2023-12-20 02:47:10,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:47:10,047 INFO L276 IsEmpty]: Start isEmpty. Operand 1067 states and 1672 transitions. [2023-12-20 02:47:10,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-12-20 02:47:10,049 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:47:10,049 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:47:10,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-20 02:47:10,050 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:47:10,050 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:47:10,050 INFO L85 PathProgramCache]: Analyzing trace with hash -934271025, now seen corresponding path program 1 times [2023-12-20 02:47:10,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:47:10,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786316003] [2023-12-20 02:47:10,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:47:10,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:47:10,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:47:10,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:47:10,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:47:10,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786316003] [2023-12-20 02:47:10,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786316003] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:47:10,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:47:10,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 02:47:10,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069715906] [2023-12-20 02:47:10,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:47:10,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 02:47:10,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:47:10,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 02:47:10,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 02:47:10,156 INFO L87 Difference]: Start difference. First operand 1067 states and 1672 transitions. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:47:10,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:47:10,194 INFO L93 Difference]: Finished difference Result 2717 states and 4275 transitions. [2023-12-20 02:47:10,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 02:47:10,194 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 135 [2023-12-20 02:47:10,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:47:10,199 INFO L225 Difference]: With dead ends: 2717 [2023-12-20 02:47:10,199 INFO L226 Difference]: Without dead ends: 1716 [2023-12-20 02:47:10,202 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 02:47:10,207 INFO L413 NwaCegarLoop]: 758 mSDtfsCounter, 443 mSDsluCounter, 474 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 443 SdHoareTripleChecker+Valid, 1232 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 02:47:10,208 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [443 Valid, 1232 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 02:47:10,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1716 states. [2023-12-20 02:47:10,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1716 to 1714. [2023-12-20 02:47:10,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1714 states, 1713 states have (on average 1.561004086398132) internal successors, (2674), 1713 states have internal predecessors, (2674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:47:10,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1714 states to 1714 states and 2674 transitions. [2023-12-20 02:47:10,231 INFO L78 Accepts]: Start accepts. Automaton has 1714 states and 2674 transitions. Word has length 135 [2023-12-20 02:47:10,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:47:10,231 INFO L495 AbstractCegarLoop]: Abstraction has 1714 states and 2674 transitions. [2023-12-20 02:47:10,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:47:10,232 INFO L276 IsEmpty]: Start isEmpty. Operand 1714 states and 2674 transitions. [2023-12-20 02:47:10,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-20 02:47:10,236 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:47:10,236 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:47:10,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-20 02:47:10,237 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:47:10,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:47:10,237 INFO L85 PathProgramCache]: Analyzing trace with hash 944557568, now seen corresponding path program 1 times [2023-12-20 02:47:10,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:47:10,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213744407] [2023-12-20 02:47:10,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:47:10,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:47:10,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:47:10,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:47:10,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:47:10,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213744407] [2023-12-20 02:47:10,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213744407] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:47:10,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:47:10,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 02:47:10,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859767737] [2023-12-20 02:47:10,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:47:10,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 02:47:10,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:47:10,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 02:47:10,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 02:47:10,304 INFO L87 Difference]: Start difference. First operand 1714 states and 2674 transitions. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:47:10,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:47:10,343 INFO L93 Difference]: Finished difference Result 4314 states and 6728 transitions. [2023-12-20 02:47:10,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 02:47:10,344 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 138 [2023-12-20 02:47:10,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:47:10,350 INFO L225 Difference]: With dead ends: 4314 [2023-12-20 02:47:10,350 INFO L226 Difference]: Without dead ends: 2679 [2023-12-20 02:47:10,352 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 02:47:10,354 INFO L413 NwaCegarLoop]: 719 mSDtfsCounter, 428 mSDsluCounter, 449 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 428 SdHoareTripleChecker+Valid, 1168 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 02:47:10,354 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [428 Valid, 1168 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 02:47:10,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2679 states. [2023-12-20 02:47:10,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2679 to 2677. [2023-12-20 02:47:10,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2677 states, 2676 states have (on average 1.5440956651718984) internal successors, (4132), 2676 states have internal predecessors, (4132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:47:10,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2677 states to 2677 states and 4132 transitions. [2023-12-20 02:47:10,422 INFO L78 Accepts]: Start accepts. Automaton has 2677 states and 4132 transitions. Word has length 138 [2023-12-20 02:47:10,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:47:10,422 INFO L495 AbstractCegarLoop]: Abstraction has 2677 states and 4132 transitions. [2023-12-20 02:47:10,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:47:10,423 INFO L276 IsEmpty]: Start isEmpty. Operand 2677 states and 4132 transitions. [2023-12-20 02:47:10,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-20 02:47:10,427 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:47:10,427 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:47:10,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-20 02:47:10,427 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:47:10,427 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:47:10,428 INFO L85 PathProgramCache]: Analyzing trace with hash -2062360604, now seen corresponding path program 1 times [2023-12-20 02:47:10,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:47:10,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555883331] [2023-12-20 02:47:10,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:47:10,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:47:10,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:47:10,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:47:10,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:47:10,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555883331] [2023-12-20 02:47:10,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555883331] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:47:10,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:47:10,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 02:47:10,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633854554] [2023-12-20 02:47:10,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:47:10,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 02:47:10,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:47:10,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 02:47:10,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-20 02:47:10,530 INFO L87 Difference]: Start difference. First operand 2677 states and 4132 transitions. Second operand has 6 states, 6 states have (on average 23.5) internal successors, (141), 6 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:47:10,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:47:10,728 INFO L93 Difference]: Finished difference Result 14016 states and 21618 transitions. [2023-12-20 02:47:10,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 02:47:10,729 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.5) internal successors, (141), 6 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2023-12-20 02:47:10,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:47:10,758 INFO L225 Difference]: With dead ends: 14016 [2023-12-20 02:47:10,759 INFO L226 Difference]: Without dead ends: 11422 [2023-12-20 02:47:10,766 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-12-20 02:47:10,767 INFO L413 NwaCegarLoop]: 775 mSDtfsCounter, 3458 mSDsluCounter, 2567 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3458 SdHoareTripleChecker+Valid, 3342 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 02:47:10,767 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3458 Valid, 3342 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 02:47:10,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11422 states. [2023-12-20 02:47:10,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11422 to 5187. [2023-12-20 02:47:10,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5187 states, 5186 states have (on average 1.521210952564597) internal successors, (7889), 5186 states have internal predecessors, (7889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:47:10,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5187 states to 5187 states and 7889 transitions. [2023-12-20 02:47:10,940 INFO L78 Accepts]: Start accepts. Automaton has 5187 states and 7889 transitions. Word has length 141 [2023-12-20 02:47:10,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:47:10,941 INFO L495 AbstractCegarLoop]: Abstraction has 5187 states and 7889 transitions. [2023-12-20 02:47:10,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.5) internal successors, (141), 6 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:47:10,942 INFO L276 IsEmpty]: Start isEmpty. Operand 5187 states and 7889 transitions. [2023-12-20 02:47:10,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-20 02:47:10,953 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:47:10,953 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:47:10,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-20 02:47:10,953 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:47:10,954 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:47:10,954 INFO L85 PathProgramCache]: Analyzing trace with hash -431758134, now seen corresponding path program 1 times [2023-12-20 02:47:10,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:47:10,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892861223] [2023-12-20 02:47:10,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:47:10,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:47:10,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:47:11,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:47:11,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:47:11,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892861223] [2023-12-20 02:47:11,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892861223] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:47:11,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:47:11,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 02:47:11,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599088593] [2023-12-20 02:47:11,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:47:11,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 02:47:11,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:47:11,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 02:47:11,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 02:47:11,027 INFO L87 Difference]: Start difference. First operand 5187 states and 7889 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:47:11,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:47:11,116 INFO L93 Difference]: Finished difference Result 14632 states and 22198 transitions. [2023-12-20 02:47:11,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 02:47:11,117 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 145 [2023-12-20 02:47:11,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:47:11,150 INFO L225 Difference]: With dead ends: 14632 [2023-12-20 02:47:11,151 INFO L226 Difference]: Without dead ends: 9674 [2023-12-20 02:47:11,159 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 02:47:11,159 INFO L413 NwaCegarLoop]: 604 mSDtfsCounter, 466 mSDsluCounter, 553 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 466 SdHoareTripleChecker+Valid, 1157 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 02:47:11,160 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [466 Valid, 1157 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 02:47:11,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9674 states. [2023-12-20 02:47:11,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9674 to 9672. [2023-12-20 02:47:11,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9672 states, 9671 states have (on average 1.5039809740461172) internal successors, (14545), 9671 states have internal predecessors, (14545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:47:11,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9672 states to 9672 states and 14545 transitions. [2023-12-20 02:47:11,311 INFO L78 Accepts]: Start accepts. Automaton has 9672 states and 14545 transitions. Word has length 145 [2023-12-20 02:47:11,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:47:11,312 INFO L495 AbstractCegarLoop]: Abstraction has 9672 states and 14545 transitions. [2023-12-20 02:47:11,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:47:11,312 INFO L276 IsEmpty]: Start isEmpty. Operand 9672 states and 14545 transitions. [2023-12-20 02:47:11,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-20 02:47:11,325 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:47:11,326 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:47:11,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-20 02:47:11,326 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:47:11,326 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:47:11,326 INFO L85 PathProgramCache]: Analyzing trace with hash -1022138189, now seen corresponding path program 1 times [2023-12-20 02:47:11,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:47:11,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285731835] [2023-12-20 02:47:11,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:47:11,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:47:11,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:47:11,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:47:11,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:47:11,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285731835] [2023-12-20 02:47:11,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285731835] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:47:11,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:47:11,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 02:47:11,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143063807] [2023-12-20 02:47:11,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:47:11,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 02:47:11,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:47:11,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 02:47:11,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 02:47:11,412 INFO L87 Difference]: Start difference. First operand 9672 states and 14545 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:47:11,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:47:11,564 INFO L93 Difference]: Finished difference Result 26792 states and 40068 transitions. [2023-12-20 02:47:11,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 02:47:11,564 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 145 [2023-12-20 02:47:11,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:47:11,594 INFO L225 Difference]: With dead ends: 26792 [2023-12-20 02:47:11,595 INFO L226 Difference]: Without dead ends: 17839 [2023-12-20 02:47:11,604 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 02:47:11,606 INFO L413 NwaCegarLoop]: 604 mSDtfsCounter, 448 mSDsluCounter, 553 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 448 SdHoareTripleChecker+Valid, 1157 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 02:47:11,606 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [448 Valid, 1157 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 02:47:11,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17839 states. [2023-12-20 02:47:11,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17839 to 17837. [2023-12-20 02:47:11,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17837 states, 17836 states have (on average 1.4804328324736489) internal successors, (26405), 17836 states have internal predecessors, (26405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:47:11,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17837 states to 17837 states and 26405 transitions. [2023-12-20 02:47:11,832 INFO L78 Accepts]: Start accepts. Automaton has 17837 states and 26405 transitions. Word has length 145 [2023-12-20 02:47:11,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:47:11,832 INFO L495 AbstractCegarLoop]: Abstraction has 17837 states and 26405 transitions. [2023-12-20 02:47:11,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:47:11,833 INFO L276 IsEmpty]: Start isEmpty. Operand 17837 states and 26405 transitions. [2023-12-20 02:47:11,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-20 02:47:11,857 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:47:11,857 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:47:11,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-20 02:47:11,858 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:47:11,858 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:47:11,858 INFO L85 PathProgramCache]: Analyzing trace with hash -1185775444, now seen corresponding path program 1 times [2023-12-20 02:47:11,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:47:11,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230094440] [2023-12-20 02:47:11,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:47:11,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:47:11,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:47:11,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:47:11,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:47:11,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230094440] [2023-12-20 02:47:11,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230094440] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:47:11,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:47:11,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 02:47:11,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824524776] [2023-12-20 02:47:11,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:47:11,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 02:47:11,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:47:11,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 02:47:11,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 02:47:11,981 INFO L87 Difference]: Start difference. First operand 17837 states and 26405 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:47:12,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:47:12,116 INFO L93 Difference]: Finished difference Result 50668 states and 74633 transitions. [2023-12-20 02:47:12,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 02:47:12,117 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 145 [2023-12-20 02:47:12,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:47:12,160 INFO L225 Difference]: With dead ends: 50668 [2023-12-20 02:47:12,161 INFO L226 Difference]: Without dead ends: 33146 [2023-12-20 02:47:12,184 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 02:47:12,186 INFO L413 NwaCegarLoop]: 604 mSDtfsCounter, 485 mSDsluCounter, 553 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 485 SdHoareTripleChecker+Valid, 1157 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 02:47:12,186 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [485 Valid, 1157 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 02:47:12,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33146 states. [2023-12-20 02:47:12,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33146 to 33144. [2023-12-20 02:47:12,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33144 states, 33143 states have (on average 1.4572006155145882) internal successors, (48296), 33143 states have internal predecessors, (48296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:47:12,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33144 states to 33144 states and 48296 transitions. [2023-12-20 02:47:12,792 INFO L78 Accepts]: Start accepts. Automaton has 33144 states and 48296 transitions. Word has length 145 [2023-12-20 02:47:12,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:47:12,793 INFO L495 AbstractCegarLoop]: Abstraction has 33144 states and 48296 transitions. [2023-12-20 02:47:12,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:47:12,793 INFO L276 IsEmpty]: Start isEmpty. Operand 33144 states and 48296 transitions. [2023-12-20 02:47:12,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-20 02:47:12,857 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:47:12,857 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:47:12,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-20 02:47:12,857 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:47:12,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:47:12,860 INFO L85 PathProgramCache]: Analyzing trace with hash -1207544778, now seen corresponding path program 1 times [2023-12-20 02:47:12,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:47:12,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195797418] [2023-12-20 02:47:12,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:47:12,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:47:12,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:47:12,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:47:12,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:47:12,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195797418] [2023-12-20 02:47:12,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195797418] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:47:12,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:47:12,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 02:47:12,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852380432] [2023-12-20 02:47:12,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:47:12,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 02:47:12,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:47:12,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 02:47:12,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 02:47:12,914 INFO L87 Difference]: Start difference. First operand 33144 states and 48296 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:47:13,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:47:13,269 INFO L93 Difference]: Finished difference Result 93945 states and 136144 transitions. [2023-12-20 02:47:13,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 02:47:13,270 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 145 [2023-12-20 02:47:13,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:47:13,353 INFO L225 Difference]: With dead ends: 93945 [2023-12-20 02:47:13,354 INFO L226 Difference]: Without dead ends: 61067 [2023-12-20 02:47:13,444 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 02:47:13,445 INFO L413 NwaCegarLoop]: 606 mSDtfsCounter, 503 mSDsluCounter, 553 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 503 SdHoareTripleChecker+Valid, 1159 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 02:47:13,445 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [503 Valid, 1159 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 02:47:13,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61067 states. [2023-12-20 02:47:14,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61067 to 61065. [2023-12-20 02:47:14,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61065 states, 61064 states have (on average 1.432840953753439) internal successors, (87495), 61064 states have internal predecessors, (87495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:47:14,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61065 states to 61065 states and 87495 transitions. [2023-12-20 02:47:14,522 INFO L78 Accepts]: Start accepts. Automaton has 61065 states and 87495 transitions. Word has length 145 [2023-12-20 02:47:14,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:47:14,522 INFO L495 AbstractCegarLoop]: Abstraction has 61065 states and 87495 transitions. [2023-12-20 02:47:14,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:47:14,523 INFO L276 IsEmpty]: Start isEmpty. Operand 61065 states and 87495 transitions. [2023-12-20 02:47:14,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-20 02:47:14,722 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:47:14,722 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:47:14,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-20 02:47:14,722 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:47:14,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:47:14,723 INFO L85 PathProgramCache]: Analyzing trace with hash 1995772061, now seen corresponding path program 1 times [2023-12-20 02:47:14,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:47:14,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987099841] [2023-12-20 02:47:14,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:47:14,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:47:14,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:47:14,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:47:14,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:47:14,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987099841] [2023-12-20 02:47:14,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987099841] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:47:14,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:47:14,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 02:47:14,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786459655] [2023-12-20 02:47:14,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:47:14,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 02:47:14,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:47:14,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 02:47:14,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-12-20 02:47:14,880 INFO L87 Difference]: Start difference. First operand 61065 states and 87495 transitions. Second operand has 6 states, 6 states have (on average 24.333333333333332) internal successors, (146), 6 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:47:15,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:47:15,370 INFO L93 Difference]: Finished difference Result 100178 states and 142154 transitions. [2023-12-20 02:47:15,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 02:47:15,371 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 24.333333333333332) internal successors, (146), 6 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 146 [2023-12-20 02:47:15,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:47:15,452 INFO L225 Difference]: With dead ends: 100178 [2023-12-20 02:47:15,452 INFO L226 Difference]: Without dead ends: 61271 [2023-12-20 02:47:15,487 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-12-20 02:47:15,488 INFO L413 NwaCegarLoop]: 1204 mSDtfsCounter, 2424 mSDsluCounter, 1431 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2424 SdHoareTripleChecker+Valid, 2635 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 02:47:15,488 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2424 Valid, 2635 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 02:47:15,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61271 states. [2023-12-20 02:47:16,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61271 to 59627. [2023-12-20 02:47:16,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59627 states, 59626 states have (on average 1.4092342266796365) internal successors, (84027), 59626 states have internal predecessors, (84027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:47:16,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59627 states to 59627 states and 84027 transitions. [2023-12-20 02:47:16,418 INFO L78 Accepts]: Start accepts. Automaton has 59627 states and 84027 transitions. Word has length 146 [2023-12-20 02:47:16,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:47:16,419 INFO L495 AbstractCegarLoop]: Abstraction has 59627 states and 84027 transitions. [2023-12-20 02:47:16,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.333333333333332) internal successors, (146), 6 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:47:16,419 INFO L276 IsEmpty]: Start isEmpty. Operand 59627 states and 84027 transitions. [2023-12-20 02:47:16,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-12-20 02:47:16,710 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:47:16,711 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:47:16,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-20 02:47:16,711 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:47:16,711 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:47:16,711 INFO L85 PathProgramCache]: Analyzing trace with hash -1164400056, now seen corresponding path program 1 times [2023-12-20 02:47:16,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:47:16,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105655327] [2023-12-20 02:47:16,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:47:16,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:47:16,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:47:16,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:47:16,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:47:16,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105655327] [2023-12-20 02:47:16,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105655327] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:47:16,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:47:16,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 02:47:16,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448322921] [2023-12-20 02:47:16,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:47:16,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 02:47:16,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:47:16,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 02:47:16,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-20 02:47:16,826 INFO L87 Difference]: Start difference. First operand 59627 states and 84027 transitions. Second operand has 6 states, 6 states have (on average 24.5) internal successors, (147), 6 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:47:17,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:47:17,461 INFO L93 Difference]: Finished difference Result 130710 states and 186577 transitions. [2023-12-20 02:47:17,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 02:47:17,462 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 24.5) internal successors, (147), 6 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 147 [2023-12-20 02:47:17,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:47:17,614 INFO L225 Difference]: With dead ends: 130710 [2023-12-20 02:47:17,614 INFO L226 Difference]: Without dead ends: 108323 [2023-12-20 02:47:17,660 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-20 02:47:17,660 INFO L413 NwaCegarLoop]: 1070 mSDtfsCounter, 2956 mSDsluCounter, 2718 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2956 SdHoareTripleChecker+Valid, 3788 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 02:47:17,661 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2956 Valid, 3788 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 02:47:17,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108323 states. [2023-12-20 02:47:18,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108323 to 81321. [2023-12-20 02:47:18,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81321 states, 81320 states have (on average 1.4089891785538613) internal successors, (114579), 81320 states have internal predecessors, (114579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:47:18,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81321 states to 81321 states and 114579 transitions. [2023-12-20 02:47:18,989 INFO L78 Accepts]: Start accepts. Automaton has 81321 states and 114579 transitions. Word has length 147 [2023-12-20 02:47:18,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:47:18,990 INFO L495 AbstractCegarLoop]: Abstraction has 81321 states and 114579 transitions. [2023-12-20 02:47:18,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.5) internal successors, (147), 6 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:47:18,990 INFO L276 IsEmpty]: Start isEmpty. Operand 81321 states and 114579 transitions. [2023-12-20 02:47:19,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-12-20 02:47:19,340 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:47:19,341 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:47:19,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-20 02:47:19,341 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:47:19,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:47:19,341 INFO L85 PathProgramCache]: Analyzing trace with hash -702106715, now seen corresponding path program 1 times [2023-12-20 02:47:19,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:47:19,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81517379] [2023-12-20 02:47:19,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:47:19,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:47:19,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:47:19,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:47:19,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:47:19,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81517379] [2023-12-20 02:47:19,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81517379] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:47:19,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:47:19,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 02:47:19,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871475386] [2023-12-20 02:47:19,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:47:19,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 02:47:19,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:47:19,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 02:47:19,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 02:47:19,399 INFO L87 Difference]: Start difference. First operand 81321 states and 114579 transitions. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:47:19,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:47:19,631 INFO L93 Difference]: Finished difference Result 108029 states and 151818 transitions. [2023-12-20 02:47:19,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 02:47:19,632 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 148 [2023-12-20 02:47:19,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:47:19,699 INFO L225 Difference]: With dead ends: 108029 [2023-12-20 02:47:19,699 INFO L226 Difference]: Without dead ends: 70503 [2023-12-20 02:47:19,733 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 02:47:19,733 INFO L413 NwaCegarLoop]: 911 mSDtfsCounter, 486 mSDsluCounter, 547 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 486 SdHoareTripleChecker+Valid, 1458 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 02:47:19,733 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [486 Valid, 1458 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 02:47:19,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70503 states. [2023-12-20 02:47:20,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70503 to 70421. [2023-12-20 02:47:20,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70421 states, 70420 states have (on average 1.3959102527690996) internal successors, (98300), 70420 states have internal predecessors, (98300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:47:20,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70421 states to 70421 states and 98300 transitions. [2023-12-20 02:47:20,955 INFO L78 Accepts]: Start accepts. Automaton has 70421 states and 98300 transitions. Word has length 148 [2023-12-20 02:47:20,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:47:20,955 INFO L495 AbstractCegarLoop]: Abstraction has 70421 states and 98300 transitions. [2023-12-20 02:47:20,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:47:20,955 INFO L276 IsEmpty]: Start isEmpty. Operand 70421 states and 98300 transitions. [2023-12-20 02:47:21,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2023-12-20 02:47:21,026 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:47:21,026 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:47:21,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-20 02:47:21,027 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:47:21,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:47:21,027 INFO L85 PathProgramCache]: Analyzing trace with hash 1538059641, now seen corresponding path program 1 times [2023-12-20 02:47:21,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:47:21,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769253419] [2023-12-20 02:47:21,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:47:21,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:47:21,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:47:21,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:47:21,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:47:21,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769253419] [2023-12-20 02:47:21,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769253419] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:47:21,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:47:21,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 02:47:21,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16939185] [2023-12-20 02:47:21,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:47:21,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 02:47:21,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:47:21,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 02:47:21,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-20 02:47:21,162 INFO L87 Difference]: Start difference. First operand 70421 states and 98300 transitions. Second operand has 6 states, 6 states have (on average 24.833333333333332) internal successors, (149), 6 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:47:21,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:47:21,808 INFO L93 Difference]: Finished difference Result 129276 states and 182531 transitions. [2023-12-20 02:47:21,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 02:47:21,809 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 24.833333333333332) internal successors, (149), 6 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 149 [2023-12-20 02:47:21,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:47:21,934 INFO L225 Difference]: With dead ends: 129276 [2023-12-20 02:47:21,934 INFO L226 Difference]: Without dead ends: 109407 [2023-12-20 02:47:21,959 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-20 02:47:21,960 INFO L413 NwaCegarLoop]: 1048 mSDtfsCounter, 2906 mSDsluCounter, 2333 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2906 SdHoareTripleChecker+Valid, 3381 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 02:47:21,960 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2906 Valid, 3381 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 02:47:22,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109407 states. [2023-12-20 02:47:23,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109407 to 89428. [2023-12-20 02:47:23,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89428 states, 89427 states have (on average 1.3961443411944938) internal successors, (124853), 89427 states have internal predecessors, (124853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:47:23,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89428 states to 89428 states and 124853 transitions. [2023-12-20 02:47:23,401 INFO L78 Accepts]: Start accepts. Automaton has 89428 states and 124853 transitions. Word has length 149 [2023-12-20 02:47:23,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:47:23,401 INFO L495 AbstractCegarLoop]: Abstraction has 89428 states and 124853 transitions. [2023-12-20 02:47:23,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.833333333333332) internal successors, (149), 6 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:47:23,401 INFO L276 IsEmpty]: Start isEmpty. Operand 89428 states and 124853 transitions. [2023-12-20 02:47:23,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2023-12-20 02:47:23,472 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:47:23,473 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:47:23,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-20 02:47:23,473 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:47:23,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:47:23,473 INFO L85 PathProgramCache]: Analyzing trace with hash 2074812457, now seen corresponding path program 1 times [2023-12-20 02:47:23,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:47:23,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213238576] [2023-12-20 02:47:23,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:47:23,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:47:23,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:47:23,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:47:23,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:47:23,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213238576] [2023-12-20 02:47:23,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213238576] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:47:23,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:47:23,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 02:47:23,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254520824] [2023-12-20 02:47:23,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:47:23,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 02:47:23,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:47:23,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 02:47:23,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-20 02:47:23,577 INFO L87 Difference]: Start difference. First operand 89428 states and 124853 transitions. Second operand has 6 states, 6 states have (on average 24.833333333333332) internal successors, (149), 6 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:47:24,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:47:24,175 INFO L93 Difference]: Finished difference Result 142530 states and 200885 transitions. [2023-12-20 02:47:24,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 02:47:24,176 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 24.833333333333332) internal successors, (149), 6 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 149 [2023-12-20 02:47:24,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:47:24,312 INFO L225 Difference]: With dead ends: 142530 [2023-12-20 02:47:24,312 INFO L226 Difference]: Without dead ends: 126175 [2023-12-20 02:47:24,352 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-20 02:47:24,353 INFO L413 NwaCegarLoop]: 987 mSDtfsCounter, 3155 mSDsluCounter, 2287 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3155 SdHoareTripleChecker+Valid, 3274 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 02:47:24,353 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3155 Valid, 3274 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 02:47:24,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126175 states. [2023-12-20 02:47:25,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126175 to 104220. [2023-12-20 02:47:25,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104220 states, 104219 states have (on average 1.3965591686736583) internal successors, (145548), 104219 states have internal predecessors, (145548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:47:26,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104220 states to 104220 states and 145548 transitions. [2023-12-20 02:47:26,287 INFO L78 Accepts]: Start accepts. Automaton has 104220 states and 145548 transitions. Word has length 149 [2023-12-20 02:47:26,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:47:26,287 INFO L495 AbstractCegarLoop]: Abstraction has 104220 states and 145548 transitions. [2023-12-20 02:47:26,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.833333333333332) internal successors, (149), 6 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:47:26,288 INFO L276 IsEmpty]: Start isEmpty. Operand 104220 states and 145548 transitions. [2023-12-20 02:47:26,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-12-20 02:47:26,359 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:47:26,359 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:47:26,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-20 02:47:26,360 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:47:26,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:47:26,360 INFO L85 PathProgramCache]: Analyzing trace with hash -2097434774, now seen corresponding path program 1 times [2023-12-20 02:47:26,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:47:26,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665440476] [2023-12-20 02:47:26,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:47:26,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:47:26,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:47:26,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:47:26,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:47:26,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665440476] [2023-12-20 02:47:26,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665440476] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:47:26,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:47:26,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 02:47:26,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636626826] [2023-12-20 02:47:26,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:47:26,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 02:47:26,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:47:26,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 02:47:26,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 02:47:26,414 INFO L87 Difference]: Start difference. First operand 104220 states and 145548 transitions. Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:47:26,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:47:26,707 INFO L93 Difference]: Finished difference Result 138153 states and 192446 transitions. [2023-12-20 02:47:26,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 02:47:26,708 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 150 [2023-12-20 02:47:26,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:47:26,801 INFO L225 Difference]: With dead ends: 138153 [2023-12-20 02:47:26,801 INFO L226 Difference]: Without dead ends: 95864 [2023-12-20 02:47:27,137 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 02:47:27,137 INFO L413 NwaCegarLoop]: 1009 mSDtfsCounter, 442 mSDsluCounter, 547 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 442 SdHoareTripleChecker+Valid, 1556 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 02:47:27,138 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [442 Valid, 1556 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 02:47:27,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95864 states. [2023-12-20 02:47:28,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95864 to 95817. [2023-12-20 02:47:28,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95817 states, 95816 states have (on average 1.383130166151791) internal successors, (132526), 95816 states have internal predecessors, (132526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:47:28,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95817 states to 95817 states and 132526 transitions. [2023-12-20 02:47:28,391 INFO L78 Accepts]: Start accepts. Automaton has 95817 states and 132526 transitions. Word has length 150 [2023-12-20 02:47:28,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:47:28,391 INFO L495 AbstractCegarLoop]: Abstraction has 95817 states and 132526 transitions. [2023-12-20 02:47:28,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:47:28,392 INFO L276 IsEmpty]: Start isEmpty. Operand 95817 states and 132526 transitions. [2023-12-20 02:47:28,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-12-20 02:47:28,479 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:47:28,479 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:47:28,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-20 02:47:28,480 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:47:28,480 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:47:28,480 INFO L85 PathProgramCache]: Analyzing trace with hash 383016120, now seen corresponding path program 1 times [2023-12-20 02:47:28,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:47:28,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500976491] [2023-12-20 02:47:28,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:47:28,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:47:28,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:47:28,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:47:28,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:47:28,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500976491] [2023-12-20 02:47:28,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500976491] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:47:28,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:47:28,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 02:47:28,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444800304] [2023-12-20 02:47:28,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:47:28,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 02:47:28,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:47:28,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 02:47:28,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 02:47:28,543 INFO L87 Difference]: Start difference. First operand 95817 states and 132526 transitions. Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:47:29,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:47:29,115 INFO L93 Difference]: Finished difference Result 116826 states and 161374 transitions. [2023-12-20 02:47:29,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 02:47:29,116 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 150 [2023-12-20 02:47:29,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:47:29,209 INFO L225 Difference]: With dead ends: 116826 [2023-12-20 02:47:29,209 INFO L226 Difference]: Without dead ends: 91038 [2023-12-20 02:47:29,244 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 02:47:29,244 INFO L413 NwaCegarLoop]: 1012 mSDtfsCounter, 399 mSDsluCounter, 547 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 399 SdHoareTripleChecker+Valid, 1559 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 02:47:29,244 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [399 Valid, 1559 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 02:47:29,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91038 states. [2023-12-20 02:47:30,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91038 to 91036. [2023-12-20 02:47:30,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91036 states, 91035 states have (on average 1.3728565936178392) internal successors, (124978), 91035 states have internal predecessors, (124978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:47:30,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91036 states to 91036 states and 124978 transitions. [2023-12-20 02:47:30,561 INFO L78 Accepts]: Start accepts. Automaton has 91036 states and 124978 transitions. Word has length 150 [2023-12-20 02:47:30,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:47:30,561 INFO L495 AbstractCegarLoop]: Abstraction has 91036 states and 124978 transitions. [2023-12-20 02:47:30,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:47:30,561 INFO L276 IsEmpty]: Start isEmpty. Operand 91036 states and 124978 transitions. [2023-12-20 02:47:30,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-20 02:47:30,811 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:47:30,811 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:47:30,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-20 02:47:30,811 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:47:30,812 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:47:30,813 INFO L85 PathProgramCache]: Analyzing trace with hash 1649958460, now seen corresponding path program 1 times [2023-12-20 02:47:30,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:47:30,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775257452] [2023-12-20 02:47:30,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:47:30,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:47:30,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:47:30,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:47:30,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:47:30,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775257452] [2023-12-20 02:47:30,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775257452] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:47:30,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:47:30,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 02:47:30,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130346982] [2023-12-20 02:47:30,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:47:30,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 02:47:30,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:47:30,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 02:47:30,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-20 02:47:30,958 INFO L87 Difference]: Start difference. First operand 91036 states and 124978 transitions. Second operand has 6 states, 6 states have (on average 25.166666666666668) internal successors, (151), 6 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:47:31,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:47:31,341 INFO L93 Difference]: Finished difference Result 122035 states and 168422 transitions. [2023-12-20 02:47:31,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 02:47:31,341 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.166666666666668) internal successors, (151), 6 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 151 [2023-12-20 02:47:31,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:47:31,446 INFO L225 Difference]: With dead ends: 122035 [2023-12-20 02:47:31,446 INFO L226 Difference]: Without dead ends: 110337 [2023-12-20 02:47:31,481 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-12-20 02:47:31,482 INFO L413 NwaCegarLoop]: 936 mSDtfsCounter, 2887 mSDsluCounter, 2772 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2887 SdHoareTripleChecker+Valid, 3708 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 02:47:31,482 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2887 Valid, 3708 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 02:47:31,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110337 states. [2023-12-20 02:47:32,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110337 to 101515. [2023-12-20 02:47:32,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101515 states, 101514 states have (on average 1.3717615304293005) internal successors, (139253), 101514 states have internal predecessors, (139253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:47:33,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101515 states to 101515 states and 139253 transitions. [2023-12-20 02:47:33,006 INFO L78 Accepts]: Start accepts. Automaton has 101515 states and 139253 transitions. Word has length 151 [2023-12-20 02:47:33,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:47:33,006 INFO L495 AbstractCegarLoop]: Abstraction has 101515 states and 139253 transitions. [2023-12-20 02:47:33,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.166666666666668) internal successors, (151), 6 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:47:33,006 INFO L276 IsEmpty]: Start isEmpty. Operand 101515 states and 139253 transitions. [2023-12-20 02:47:33,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-20 02:47:33,089 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:47:33,089 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:47:33,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-20 02:47:33,090 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:47:33,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:47:33,090 INFO L85 PathProgramCache]: Analyzing trace with hash -830378042, now seen corresponding path program 1 times [2023-12-20 02:47:33,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:47:33,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098270378] [2023-12-20 02:47:33,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:47:33,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:47:33,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:47:33,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:47:33,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:47:33,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098270378] [2023-12-20 02:47:33,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098270378] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:47:33,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:47:33,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 02:47:33,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348329387] [2023-12-20 02:47:33,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:47:33,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 02:47:33,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:47:33,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 02:47:33,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 02:47:33,185 INFO L87 Difference]: Start difference. First operand 101515 states and 139253 transitions. Second operand has 5 states, 5 states have (on average 30.4) internal successors, (152), 4 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:47:34,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:47:34,339 INFO L93 Difference]: Finished difference Result 288460 states and 395410 transitions. [2023-12-20 02:47:34,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 02:47:34,339 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.4) internal successors, (152), 4 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 152 [2023-12-20 02:47:34,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:47:34,500 INFO L225 Difference]: With dead ends: 288460 [2023-12-20 02:47:34,500 INFO L226 Difference]: Without dead ends: 186980 [2023-12-20 02:47:34,874 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-20 02:47:34,874 INFO L413 NwaCegarLoop]: 348 mSDtfsCounter, 2691 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 459 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2691 SdHoareTripleChecker+Valid, 623 SdHoareTripleChecker+Invalid, 477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-20 02:47:34,874 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2691 Valid, 623 Invalid, 477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 459 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-20 02:47:34,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186980 states. [2023-12-20 02:47:37,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186980 to 186610. [2023-12-20 02:47:37,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186610 states, 186609 states have (on average 1.3641196298142104) internal successors, (254557), 186609 states have internal predecessors, (254557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:47:37,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186610 states to 186610 states and 254557 transitions. [2023-12-20 02:47:37,734 INFO L78 Accepts]: Start accepts. Automaton has 186610 states and 254557 transitions. Word has length 152 [2023-12-20 02:47:37,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:47:37,734 INFO L495 AbstractCegarLoop]: Abstraction has 186610 states and 254557 transitions. [2023-12-20 02:47:37,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.4) internal successors, (152), 4 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:47:37,735 INFO L276 IsEmpty]: Start isEmpty. Operand 186610 states and 254557 transitions. [2023-12-20 02:47:37,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-20 02:47:37,913 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:47:37,913 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:47:37,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-20 02:47:37,914 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:47:37,914 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:47:37,914 INFO L85 PathProgramCache]: Analyzing trace with hash -1460148789, now seen corresponding path program 1 times [2023-12-20 02:47:37,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:47:37,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232603757] [2023-12-20 02:47:37,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:47:37,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:47:37,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:47:38,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:47:38,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:47:38,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232603757] [2023-12-20 02:47:38,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232603757] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:47:38,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:47:38,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 02:47:38,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907176003] [2023-12-20 02:47:38,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:47:38,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 02:47:38,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:47:38,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 02:47:38,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 02:47:38,365 INFO L87 Difference]: Start difference. First operand 186610 states and 254557 transitions. Second operand has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:47:39,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:47:39,238 INFO L93 Difference]: Finished difference Result 295842 states and 405035 transitions. [2023-12-20 02:47:39,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 02:47:39,238 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 152 [2023-12-20 02:47:39,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:47:39,505 INFO L225 Difference]: With dead ends: 295842 [2023-12-20 02:47:39,505 INFO L226 Difference]: Without dead ends: 128871 [2023-12-20 02:47:39,623 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 02:47:39,624 INFO L413 NwaCegarLoop]: 590 mSDtfsCounter, 277 mSDsluCounter, 355 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 945 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 02:47:39,624 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [277 Valid, 945 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 02:47:39,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128871 states. [2023-12-20 02:47:41,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128871 to 128869. [2023-12-20 02:47:41,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128869 states, 128868 states have (on average 1.3575674333426453) internal successors, (174947), 128868 states have internal predecessors, (174947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:47:41,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128869 states to 128869 states and 174947 transitions. [2023-12-20 02:47:41,574 INFO L78 Accepts]: Start accepts. Automaton has 128869 states and 174947 transitions. Word has length 152 [2023-12-20 02:47:41,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:47:41,574 INFO L495 AbstractCegarLoop]: Abstraction has 128869 states and 174947 transitions. [2023-12-20 02:47:41,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:47:41,575 INFO L276 IsEmpty]: Start isEmpty. Operand 128869 states and 174947 transitions. [2023-12-20 02:47:41,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-20 02:47:41,932 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:47:41,932 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:47:41,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-20 02:47:41,933 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:47:41,933 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:47:41,933 INFO L85 PathProgramCache]: Analyzing trace with hash -1374115809, now seen corresponding path program 1 times [2023-12-20 02:47:41,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:47:41,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809654288] [2023-12-20 02:47:41,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:47:41,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:47:42,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:47:42,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:47:42,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:47:42,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809654288] [2023-12-20 02:47:42,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809654288] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:47:42,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:47:42,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 02:47:42,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323705479] [2023-12-20 02:47:42,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:47:42,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 02:47:42,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:47:42,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 02:47:42,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-20 02:47:42,309 INFO L87 Difference]: Start difference. First operand 128869 states and 174947 transitions. Second operand has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:47:43,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:47:43,021 INFO L93 Difference]: Finished difference Result 199599 states and 270524 transitions. [2023-12-20 02:47:43,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 02:47:43,021 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 152 [2023-12-20 02:47:43,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:47:43,210 INFO L225 Difference]: With dead ends: 199599 [2023-12-20 02:47:43,210 INFO L226 Difference]: Without dead ends: 199597 [2023-12-20 02:47:43,224 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2023-12-20 02:47:43,225 INFO L413 NwaCegarLoop]: 672 mSDtfsCounter, 794 mSDsluCounter, 1798 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 794 SdHoareTripleChecker+Valid, 2470 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 02:47:43,225 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [794 Valid, 2470 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 02:47:43,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199597 states. [2023-12-20 02:47:45,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199597 to 132581. [2023-12-20 02:47:45,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132581 states, 132580 states have (on average 1.3475561924875548) internal successors, (178659), 132580 states have internal predecessors, (178659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:47:45,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132581 states to 132581 states and 178659 transitions. [2023-12-20 02:47:45,278 INFO L78 Accepts]: Start accepts. Automaton has 132581 states and 178659 transitions. Word has length 152 [2023-12-20 02:47:45,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:47:45,279 INFO L495 AbstractCegarLoop]: Abstraction has 132581 states and 178659 transitions. [2023-12-20 02:47:45,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:47:45,279 INFO L276 IsEmpty]: Start isEmpty. Operand 132581 states and 178659 transitions. [2023-12-20 02:47:45,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-12-20 02:47:45,355 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:47:45,356 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:47:45,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-20 02:47:45,356 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:47:45,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:47:45,356 INFO L85 PathProgramCache]: Analyzing trace with hash 362656252, now seen corresponding path program 1 times [2023-12-20 02:47:45,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:47:45,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752520489] [2023-12-20 02:47:45,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:47:45,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:47:45,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:47:45,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:47:45,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:47:45,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752520489] [2023-12-20 02:47:45,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752520489] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:47:45,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:47:45,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 02:47:45,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845088370] [2023-12-20 02:47:45,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:47:45,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 02:47:45,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:47:45,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 02:47:45,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 02:47:45,430 INFO L87 Difference]: Start difference. First operand 132581 states and 178659 transitions. Second operand has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:47:46,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:47:46,607 INFO L93 Difference]: Finished difference Result 332950 states and 444967 transitions. [2023-12-20 02:47:46,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 02:47:46,608 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 153 [2023-12-20 02:47:46,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:47:46,802 INFO L225 Difference]: With dead ends: 332950 [2023-12-20 02:47:46,804 INFO L226 Difference]: Without dead ends: 200645 [2023-12-20 02:47:46,828 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 02:47:46,831 INFO L413 NwaCegarLoop]: 711 mSDtfsCounter, 478 mSDsluCounter, 426 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 478 SdHoareTripleChecker+Valid, 1137 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 02:47:46,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [478 Valid, 1137 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 02:47:46,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200645 states. [2023-12-20 02:47:49,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200645 to 200643. [2023-12-20 02:47:49,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200643 states, 200642 states have (on average 1.3195592149201065) internal successors, (264759), 200642 states have internal predecessors, (264759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:47:49,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200643 states to 200643 states and 264759 transitions. [2023-12-20 02:47:49,452 INFO L78 Accepts]: Start accepts. Automaton has 200643 states and 264759 transitions. Word has length 153 [2023-12-20 02:47:49,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:47:49,452 INFO L495 AbstractCegarLoop]: Abstraction has 200643 states and 264759 transitions. [2023-12-20 02:47:49,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:47:49,452 INFO L276 IsEmpty]: Start isEmpty. Operand 200643 states and 264759 transitions. [2023-12-20 02:47:49,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-12-20 02:47:49,583 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:47:49,584 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:47:49,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-20 02:47:49,584 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:47:49,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:47:49,584 INFO L85 PathProgramCache]: Analyzing trace with hash 145233333, now seen corresponding path program 1 times [2023-12-20 02:47:49,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:47:49,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082941167] [2023-12-20 02:47:49,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:47:49,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:47:49,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:47:49,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:47:49,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:47:49,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082941167] [2023-12-20 02:47:49,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082941167] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:47:49,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:47:49,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 02:47:49,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481300603] [2023-12-20 02:47:49,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:47:49,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 02:47:49,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:47:49,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 02:47:49,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 02:47:49,697 INFO L87 Difference]: Start difference. First operand 200643 states and 264759 transitions. Second operand has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:47:50,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:47:50,553 INFO L93 Difference]: Finished difference Result 274167 states and 361969 transitions. [2023-12-20 02:47:50,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 02:47:50,554 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 153 [2023-12-20 02:47:50,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:47:50,673 INFO L225 Difference]: With dead ends: 274167 [2023-12-20 02:47:50,673 INFO L226 Difference]: Without dead ends: 103385 [2023-12-20 02:47:50,757 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 02:47:50,758 INFO L413 NwaCegarLoop]: 515 mSDtfsCounter, 246 mSDsluCounter, 311 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 826 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 02:47:50,758 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [246 Valid, 826 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 02:47:50,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103385 states. [2023-12-20 02:47:52,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103385 to 99447. [2023-12-20 02:47:52,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99447 states, 99446 states have (on average 1.3143012288075941) internal successors, (130702), 99446 states have internal predecessors, (130702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:47:52,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99447 states to 99447 states and 130702 transitions. [2023-12-20 02:47:52,325 INFO L78 Accepts]: Start accepts. Automaton has 99447 states and 130702 transitions. Word has length 153 [2023-12-20 02:47:52,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:47:52,325 INFO L495 AbstractCegarLoop]: Abstraction has 99447 states and 130702 transitions. [2023-12-20 02:47:52,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:47:52,326 INFO L276 IsEmpty]: Start isEmpty. Operand 99447 states and 130702 transitions. [2023-12-20 02:47:52,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-12-20 02:47:52,383 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:47:52,383 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:47:52,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-20 02:47:52,383 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:47:52,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:47:52,384 INFO L85 PathProgramCache]: Analyzing trace with hash -572137313, now seen corresponding path program 1 times [2023-12-20 02:47:52,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:47:52,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297122330] [2023-12-20 02:47:52,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:47:52,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:47:52,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:47:52,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:47:52,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:47:52,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297122330] [2023-12-20 02:47:52,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297122330] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:47:52,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:47:52,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-20 02:47:52,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598342656] [2023-12-20 02:47:52,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:47:52,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-20 02:47:52,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:47:52,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-20 02:47:52,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2023-12-20 02:47:52,842 INFO L87 Difference]: Start difference. First operand 99447 states and 130702 transitions. Second operand has 13 states, 13 states have (on average 11.846153846153847) internal successors, (154), 12 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:47:55,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:47:55,355 INFO L93 Difference]: Finished difference Result 321578 states and 421058 transitions. [2023-12-20 02:47:55,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-20 02:47:55,356 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 11.846153846153847) internal successors, (154), 12 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 154 [2023-12-20 02:47:55,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:47:55,653 INFO L225 Difference]: With dead ends: 321578 [2023-12-20 02:47:55,653 INFO L226 Difference]: Without dead ends: 283264 [2023-12-20 02:47:55,717 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=229, Invalid=701, Unknown=0, NotChecked=0, Total=930 [2023-12-20 02:47:55,717 INFO L413 NwaCegarLoop]: 507 mSDtfsCounter, 4068 mSDsluCounter, 3341 mSDsCounter, 0 mSdLazyCounter, 2925 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4068 SdHoareTripleChecker+Valid, 3848 SdHoareTripleChecker+Invalid, 2951 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 2925 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-20 02:47:55,718 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4068 Valid, 3848 Invalid, 2951 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 2925 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-20 02:47:55,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283264 states. [2023-12-20 02:47:58,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283264 to 110724. [2023-12-20 02:47:58,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110724 states, 110723 states have (on average 1.3106761919384409) internal successors, (145122), 110723 states have internal predecessors, (145122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:47:58,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110724 states to 110724 states and 145122 transitions. [2023-12-20 02:47:58,236 INFO L78 Accepts]: Start accepts. Automaton has 110724 states and 145122 transitions. Word has length 154 [2023-12-20 02:47:58,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:47:58,236 INFO L495 AbstractCegarLoop]: Abstraction has 110724 states and 145122 transitions. [2023-12-20 02:47:58,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 11.846153846153847) internal successors, (154), 12 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:47:58,236 INFO L276 IsEmpty]: Start isEmpty. Operand 110724 states and 145122 transitions. [2023-12-20 02:47:58,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-12-20 02:47:58,311 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:47:58,312 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:47:58,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-20 02:47:58,312 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:47:58,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:47:58,312 INFO L85 PathProgramCache]: Analyzing trace with hash 1413011258, now seen corresponding path program 1 times [2023-12-20 02:47:58,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:47:58,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804737712] [2023-12-20 02:47:58,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:47:58,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:47:58,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:47:58,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:47:58,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:47:58,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804737712] [2023-12-20 02:47:58,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804737712] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:47:58,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:47:58,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 02:47:58,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313776428] [2023-12-20 02:47:58,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:47:58,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 02:47:58,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:47:58,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 02:47:58,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 02:47:58,403 INFO L87 Difference]: Start difference. First operand 110724 states and 145122 transitions. Second operand has 5 states, 5 states have (on average 30.8) internal successors, (154), 4 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:47:59,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:47:59,502 INFO L93 Difference]: Finished difference Result 263808 states and 345646 transitions. [2023-12-20 02:47:59,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 02:47:59,502 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.8) internal successors, (154), 4 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 154 [2023-12-20 02:47:59,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:47:59,653 INFO L225 Difference]: With dead ends: 263808 [2023-12-20 02:47:59,653 INFO L226 Difference]: Without dead ends: 153141 [2023-12-20 02:47:59,718 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-20 02:47:59,719 INFO L413 NwaCegarLoop]: 301 mSDtfsCounter, 2206 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 362 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2206 SdHoareTripleChecker+Valid, 533 SdHoareTripleChecker+Invalid, 372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-20 02:47:59,719 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2206 Valid, 533 Invalid, 372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 362 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-20 02:47:59,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153141 states. [2023-12-20 02:48:01,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153141 to 149505. [2023-12-20 02:48:01,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149505 states, 149504 states have (on average 1.2989619006849316) internal successors, (194200), 149504 states have internal predecessors, (194200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:48:01,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149505 states to 149505 states and 194200 transitions. [2023-12-20 02:48:01,776 INFO L78 Accepts]: Start accepts. Automaton has 149505 states and 194200 transitions. Word has length 154 [2023-12-20 02:48:01,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:48:01,776 INFO L495 AbstractCegarLoop]: Abstraction has 149505 states and 194200 transitions. [2023-12-20 02:48:01,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.8) internal successors, (154), 4 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:48:01,777 INFO L276 IsEmpty]: Start isEmpty. Operand 149505 states and 194200 transitions. [2023-12-20 02:48:01,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-12-20 02:48:01,889 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:48:01,889 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:48:01,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-20 02:48:01,890 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:48:01,890 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:48:01,890 INFO L85 PathProgramCache]: Analyzing trace with hash -885855189, now seen corresponding path program 1 times [2023-12-20 02:48:01,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:48:01,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018728315] [2023-12-20 02:48:01,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:48:01,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:48:01,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:48:02,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:48:02,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:48:02,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018728315] [2023-12-20 02:48:02,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018728315] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:48:02,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:48:02,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-20 02:48:02,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539661363] [2023-12-20 02:48:02,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:48:02,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-20 02:48:02,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:48:02,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-20 02:48:02,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-20 02:48:02,082 INFO L87 Difference]: Start difference. First operand 149505 states and 194200 transitions. Second operand has 9 states, 9 states have (on average 17.11111111111111) internal successors, (154), 8 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:48:05,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:48:05,370 INFO L93 Difference]: Finished difference Result 638284 states and 825944 transitions. [2023-12-20 02:48:05,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-20 02:48:05,371 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 17.11111111111111) internal successors, (154), 8 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 154 [2023-12-20 02:48:05,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:48:06,335 INFO L225 Difference]: With dead ends: 638284 [2023-12-20 02:48:06,335 INFO L226 Difference]: Without dead ends: 588212 [2023-12-20 02:48:06,429 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=201, Invalid=611, Unknown=0, NotChecked=0, Total=812 [2023-12-20 02:48:06,430 INFO L413 NwaCegarLoop]: 735 mSDtfsCounter, 3996 mSDsluCounter, 2984 mSDsCounter, 0 mSdLazyCounter, 2712 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3996 SdHoareTripleChecker+Valid, 3719 SdHoareTripleChecker+Invalid, 2736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 2712 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-20 02:48:06,430 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3996 Valid, 3719 Invalid, 2736 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 2712 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-20 02:48:06,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 588212 states. [2023-12-20 02:48:10,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 588212 to 150033. [2023-12-20 02:48:10,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150033 states, 150032 states have (on average 1.2990562013437132) internal successors, (194900), 150032 states have internal predecessors, (194900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:48:10,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150033 states to 150033 states and 194900 transitions. [2023-12-20 02:48:10,690 INFO L78 Accepts]: Start accepts. Automaton has 150033 states and 194900 transitions. Word has length 154 [2023-12-20 02:48:10,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:48:10,690 INFO L495 AbstractCegarLoop]: Abstraction has 150033 states and 194900 transitions. [2023-12-20 02:48:10,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.11111111111111) internal successors, (154), 8 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:48:10,690 INFO L276 IsEmpty]: Start isEmpty. Operand 150033 states and 194900 transitions. [2023-12-20 02:48:10,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-12-20 02:48:10,813 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:48:10,813 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:48:10,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-12-20 02:48:10,813 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:48:10,814 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:48:10,814 INFO L85 PathProgramCache]: Analyzing trace with hash 286179733, now seen corresponding path program 1 times [2023-12-20 02:48:10,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:48:10,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496953262] [2023-12-20 02:48:10,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:48:10,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:48:10,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:48:10,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:48:10,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:48:10,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496953262] [2023-12-20 02:48:10,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496953262] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:48:10,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:48:10,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 02:48:10,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065474049] [2023-12-20 02:48:10,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:48:10,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 02:48:10,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:48:10,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 02:48:10,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 02:48:10,877 INFO L87 Difference]: Start difference. First operand 150033 states and 194900 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:48:11,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:48:11,742 INFO L93 Difference]: Finished difference Result 206419 states and 268760 transitions. [2023-12-20 02:48:11,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 02:48:11,742 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 154 [2023-12-20 02:48:11,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:48:11,824 INFO L225 Difference]: With dead ends: 206419 [2023-12-20 02:48:11,824 INFO L226 Difference]: Without dead ends: 78849 [2023-12-20 02:48:11,883 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 02:48:11,883 INFO L413 NwaCegarLoop]: 467 mSDtfsCounter, 180 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 768 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 02:48:11,883 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 768 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 02:48:11,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78849 states. [2023-12-20 02:48:12,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78849 to 78847. [2023-12-20 02:48:12,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78847 states, 78846 states have (on average 1.2844025061512314) internal successors, (101270), 78846 states have internal predecessors, (101270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:48:12,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78847 states to 78847 states and 101270 transitions. [2023-12-20 02:48:12,968 INFO L78 Accepts]: Start accepts. Automaton has 78847 states and 101270 transitions. Word has length 154 [2023-12-20 02:48:12,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:48:12,968 INFO L495 AbstractCegarLoop]: Abstraction has 78847 states and 101270 transitions. [2023-12-20 02:48:12,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:48:12,968 INFO L276 IsEmpty]: Start isEmpty. Operand 78847 states and 101270 transitions. [2023-12-20 02:48:13,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-12-20 02:48:13,027 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:48:13,027 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:48:13,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-12-20 02:48:13,028 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:48:13,028 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:48:13,028 INFO L85 PathProgramCache]: Analyzing trace with hash 1360074682, now seen corresponding path program 1 times [2023-12-20 02:48:13,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:48:13,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444456739] [2023-12-20 02:48:13,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:48:13,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:48:13,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:48:13,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:48:13,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:48:13,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444456739] [2023-12-20 02:48:13,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444456739] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:48:13,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:48:13,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 02:48:13,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136845505] [2023-12-20 02:48:13,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:48:13,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 02:48:13,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:48:13,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 02:48:13,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 02:48:13,074 INFO L87 Difference]: Start difference. First operand 78847 states and 101270 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:48:13,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:48:13,850 INFO L93 Difference]: Finished difference Result 214659 states and 275000 transitions. [2023-12-20 02:48:13,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 02:48:13,851 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 154 [2023-12-20 02:48:13,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:48:13,989 INFO L225 Difference]: With dead ends: 214659 [2023-12-20 02:48:13,989 INFO L226 Difference]: Without dead ends: 156285 [2023-12-20 02:48:14,023 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 02:48:14,023 INFO L413 NwaCegarLoop]: 546 mSDtfsCounter, 287 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 828 SdHoareTripleChecker+Invalid, 330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-20 02:48:14,023 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [287 Valid, 828 Invalid, 330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 322 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-20 02:48:14,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156285 states. [2023-12-20 02:48:15,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156285 to 155737. [2023-12-20 02:48:15,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155737 states, 155736 states have (on average 1.2707659115426106) internal successors, (197904), 155736 states have internal predecessors, (197904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:48:15,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155737 states to 155737 states and 197904 transitions. [2023-12-20 02:48:15,715 INFO L78 Accepts]: Start accepts. Automaton has 155737 states and 197904 transitions. Word has length 154 [2023-12-20 02:48:15,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:48:15,716 INFO L495 AbstractCegarLoop]: Abstraction has 155737 states and 197904 transitions. [2023-12-20 02:48:15,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:48:15,716 INFO L276 IsEmpty]: Start isEmpty. Operand 155737 states and 197904 transitions. [2023-12-20 02:48:15,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-12-20 02:48:15,840 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:48:15,840 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:48:15,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-12-20 02:48:15,841 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:48:15,841 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:48:15,841 INFO L85 PathProgramCache]: Analyzing trace with hash 231571807, now seen corresponding path program 1 times [2023-12-20 02:48:15,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:48:15,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3964149] [2023-12-20 02:48:15,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:48:15,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:48:15,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:48:16,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:48:16,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:48:16,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3964149] [2023-12-20 02:48:16,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3964149] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:48:16,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:48:16,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-20 02:48:16,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004248243] [2023-12-20 02:48:16,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:48:16,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-20 02:48:16,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:48:16,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-20 02:48:16,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-20 02:48:16,330 INFO L87 Difference]: Start difference. First operand 155737 states and 197904 transitions. Second operand has 9 states, 9 states have (on average 17.11111111111111) internal successors, (154), 8 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:48:19,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:48:19,305 INFO L93 Difference]: Finished difference Result 754360 states and 960043 transitions. [2023-12-20 02:48:19,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-20 02:48:19,306 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 17.11111111111111) internal successors, (154), 8 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 154 [2023-12-20 02:48:19,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:48:20,342 INFO L225 Difference]: With dead ends: 754360 [2023-12-20 02:48:20,342 INFO L226 Difference]: Without dead ends: 613452 [2023-12-20 02:48:20,442 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=201, Invalid=611, Unknown=0, NotChecked=0, Total=812 [2023-12-20 02:48:20,442 INFO L413 NwaCegarLoop]: 606 mSDtfsCounter, 4490 mSDsluCounter, 2519 mSDsCounter, 0 mSdLazyCounter, 2212 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4490 SdHoareTripleChecker+Valid, 3125 SdHoareTripleChecker+Invalid, 2240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 2212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-20 02:48:20,443 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4490 Valid, 3125 Invalid, 2240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 2212 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-20 02:48:20,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613452 states. [2023-12-20 02:48:24,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613452 to 147415. [2023-12-20 02:48:24,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147415 states, 147414 states have (on average 1.2700557613252472) internal successors, (187224), 147414 states have internal predecessors, (187224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:48:24,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147415 states to 147415 states and 187224 transitions. [2023-12-20 02:48:24,509 INFO L78 Accepts]: Start accepts. Automaton has 147415 states and 187224 transitions. Word has length 154 [2023-12-20 02:48:24,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:48:24,510 INFO L495 AbstractCegarLoop]: Abstraction has 147415 states and 187224 transitions. [2023-12-20 02:48:24,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.11111111111111) internal successors, (154), 8 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:48:24,510 INFO L276 IsEmpty]: Start isEmpty. Operand 147415 states and 187224 transitions. [2023-12-20 02:48:24,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-12-20 02:48:24,628 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:48:24,629 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:48:24,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-12-20 02:48:24,629 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:48:24,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:48:24,629 INFO L85 PathProgramCache]: Analyzing trace with hash -301084455, now seen corresponding path program 1 times [2023-12-20 02:48:24,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:48:24,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005572497] [2023-12-20 02:48:24,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:48:24,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:48:24,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:48:25,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:48:25,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:48:25,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005572497] [2023-12-20 02:48:25,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005572497] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:48:25,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:48:25,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 02:48:25,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299620791] [2023-12-20 02:48:25,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:48:25,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 02:48:25,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:48:25,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 02:48:25,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 02:48:25,064 INFO L87 Difference]: Start difference. First operand 147415 states and 187224 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:48:25,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:48:25,550 INFO L93 Difference]: Finished difference Result 198291 states and 252522 transitions. [2023-12-20 02:48:25,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 02:48:25,550 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 154 [2023-12-20 02:48:25,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:48:25,630 INFO L225 Difference]: With dead ends: 198291 [2023-12-20 02:48:25,630 INFO L226 Difference]: Without dead ends: 78967 [2023-12-20 02:48:25,690 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 02:48:25,691 INFO L413 NwaCegarLoop]: 420 mSDtfsCounter, 137 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 689 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 02:48:25,691 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 689 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 02:48:25,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78967 states. [2023-12-20 02:48:26,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78967 to 78965. [2023-12-20 02:48:26,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78965 states, 78964 states have (on average 1.2531406716984954) internal successors, (98953), 78964 states have internal predecessors, (98953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:48:26,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78965 states to 78965 states and 98953 transitions. [2023-12-20 02:48:26,814 INFO L78 Accepts]: Start accepts. Automaton has 78965 states and 98953 transitions. Word has length 154 [2023-12-20 02:48:26,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:48:26,814 INFO L495 AbstractCegarLoop]: Abstraction has 78965 states and 98953 transitions. [2023-12-20 02:48:26,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:48:26,814 INFO L276 IsEmpty]: Start isEmpty. Operand 78965 states and 98953 transitions. [2023-12-20 02:48:26,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-12-20 02:48:26,873 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:48:26,873 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:48:26,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-12-20 02:48:26,873 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:48:26,873 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:48:26,873 INFO L85 PathProgramCache]: Analyzing trace with hash -1953477318, now seen corresponding path program 1 times [2023-12-20 02:48:26,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:48:26,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138770048] [2023-12-20 02:48:26,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:48:26,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:48:26,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:48:26,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:48:26,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:48:26,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138770048] [2023-12-20 02:48:26,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138770048] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:48:26,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:48:26,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 02:48:26,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713953969] [2023-12-20 02:48:26,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:48:26,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 02:48:26,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:48:26,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 02:48:26,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 02:48:26,990 INFO L87 Difference]: Start difference. First operand 78965 states and 98953 transitions. Second operand has 5 states, 5 states have (on average 30.8) internal successors, (154), 4 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:48:27,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:48:27,696 INFO L93 Difference]: Finished difference Result 185409 states and 232148 transitions. [2023-12-20 02:48:27,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 02:48:27,697 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.8) internal successors, (154), 4 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 154 [2023-12-20 02:48:27,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:48:27,809 INFO L225 Difference]: With dead ends: 185409 [2023-12-20 02:48:27,809 INFO L226 Difference]: Without dead ends: 106754 [2023-12-20 02:48:27,840 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-20 02:48:27,841 INFO L413 NwaCegarLoop]: 249 mSDtfsCounter, 1642 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1642 SdHoareTripleChecker+Valid, 429 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-20 02:48:27,841 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1642 Valid, 429 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-20 02:48:27,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106754 states. [2023-12-20 02:48:28,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106754 to 106504. [2023-12-20 02:48:28,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106504 states, 106503 states have (on average 1.2400871336957644) internal successors, (132073), 106503 states have internal predecessors, (132073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:48:29,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106504 states to 106504 states and 132073 transitions. [2023-12-20 02:48:29,085 INFO L78 Accepts]: Start accepts. Automaton has 106504 states and 132073 transitions. Word has length 154 [2023-12-20 02:48:29,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:48:29,086 INFO L495 AbstractCegarLoop]: Abstraction has 106504 states and 132073 transitions. [2023-12-20 02:48:29,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.8) internal successors, (154), 4 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:48:29,086 INFO L276 IsEmpty]: Start isEmpty. Operand 106504 states and 132073 transitions. [2023-12-20 02:48:29,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-12-20 02:48:29,163 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:48:29,163 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:48:29,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-12-20 02:48:29,164 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:48:29,164 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:48:29,164 INFO L85 PathProgramCache]: Analyzing trace with hash 442608491, now seen corresponding path program 1 times [2023-12-20 02:48:29,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:48:29,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604513812] [2023-12-20 02:48:29,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:48:29,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:48:29,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:48:29,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:48:29,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:48:29,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604513812] [2023-12-20 02:48:29,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604513812] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:48:29,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:48:29,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-20 02:48:29,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048964036] [2023-12-20 02:48:29,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:48:29,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-20 02:48:29,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:48:29,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-20 02:48:29,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-20 02:48:29,566 INFO L87 Difference]: Start difference. First operand 106504 states and 132073 transitions. Second operand has 9 states, 9 states have (on average 17.11111111111111) internal successors, (154), 8 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:48:31,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:48:31,646 INFO L93 Difference]: Finished difference Result 369963 states and 457675 transitions. [2023-12-20 02:48:31,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-20 02:48:31,646 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 17.11111111111111) internal successors, (154), 8 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 154 [2023-12-20 02:48:31,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:48:32,106 INFO L225 Difference]: With dead ends: 369963 [2023-12-20 02:48:32,107 INFO L226 Difference]: Without dead ends: 332842 [2023-12-20 02:48:32,221 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=170, Invalid=480, Unknown=0, NotChecked=0, Total=650 [2023-12-20 02:48:32,221 INFO L413 NwaCegarLoop]: 496 mSDtfsCounter, 2502 mSDsluCounter, 2056 mSDsCounter, 0 mSdLazyCounter, 1882 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2502 SdHoareTripleChecker+Valid, 2552 SdHoareTripleChecker+Invalid, 1897 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1882 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-20 02:48:32,221 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2502 Valid, 2552 Invalid, 1897 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1882 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-20 02:48:32,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332842 states. [2023-12-20 02:48:34,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332842 to 106684. [2023-12-20 02:48:34,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106684 states, 106683 states have (on average 1.239682048686295) internal successors, (132253), 106683 states have internal predecessors, (132253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:48:34,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106684 states to 106684 states and 132253 transitions. [2023-12-20 02:48:34,948 INFO L78 Accepts]: Start accepts. Automaton has 106684 states and 132253 transitions. Word has length 154 [2023-12-20 02:48:34,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:48:34,949 INFO L495 AbstractCegarLoop]: Abstraction has 106684 states and 132253 transitions. [2023-12-20 02:48:34,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.11111111111111) internal successors, (154), 8 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:48:34,949 INFO L276 IsEmpty]: Start isEmpty. Operand 106684 states and 132253 transitions. [2023-12-20 02:48:35,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-12-20 02:48:35,020 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:48:35,020 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:48:35,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-12-20 02:48:35,020 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:48:35,020 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:48:35,021 INFO L85 PathProgramCache]: Analyzing trace with hash -1772271988, now seen corresponding path program 1 times [2023-12-20 02:48:35,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:48:35,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946510351] [2023-12-20 02:48:35,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:48:35,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:48:35,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:48:35,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:48:35,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:48:35,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946510351] [2023-12-20 02:48:35,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946510351] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:48:35,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:48:35,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 02:48:35,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291180547] [2023-12-20 02:48:35,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:48:35,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 02:48:35,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:48:35,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 02:48:35,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 02:48:35,057 INFO L87 Difference]: Start difference. First operand 106684 states and 132253 transitions. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:48:35,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:48:35,820 INFO L93 Difference]: Finished difference Result 217194 states and 268951 transitions. [2023-12-20 02:48:35,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 02:48:35,821 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 155 [2023-12-20 02:48:35,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:48:35,933 INFO L225 Difference]: With dead ends: 217194 [2023-12-20 02:48:35,933 INFO L226 Difference]: Without dead ends: 110545 [2023-12-20 02:48:35,985 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 02:48:35,987 INFO L413 NwaCegarLoop]: 295 mSDtfsCounter, 361 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 361 SdHoareTripleChecker+Valid, 413 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 02:48:35,987 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [361 Valid, 413 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 02:48:36,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110545 states. [2023-12-20 02:48:36,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110545 to 102218. [2023-12-20 02:48:37,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102218 states, 102217 states have (on average 1.2247180018979231) internal successors, (125187), 102217 states have internal predecessors, (125187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:48:37,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102218 states to 102218 states and 125187 transitions. [2023-12-20 02:48:37,169 INFO L78 Accepts]: Start accepts. Automaton has 102218 states and 125187 transitions. Word has length 155 [2023-12-20 02:48:37,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:48:37,169 INFO L495 AbstractCegarLoop]: Abstraction has 102218 states and 125187 transitions. [2023-12-20 02:48:37,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:48:37,169 INFO L276 IsEmpty]: Start isEmpty. Operand 102218 states and 125187 transitions. [2023-12-20 02:48:37,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-12-20 02:48:37,243 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:48:37,243 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:48:37,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-12-20 02:48:37,243 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:48:37,246 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:48:37,246 INFO L85 PathProgramCache]: Analyzing trace with hash 1561523587, now seen corresponding path program 1 times [2023-12-20 02:48:37,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:48:37,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637853462] [2023-12-20 02:48:37,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:48:37,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:48:37,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:48:37,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:48:37,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:48:37,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637853462] [2023-12-20 02:48:37,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637853462] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:48:37,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:48:37,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-20 02:48:37,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931898371] [2023-12-20 02:48:37,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:48:37,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-20 02:48:37,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:48:37,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-20 02:48:37,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-20 02:48:37,470 INFO L87 Difference]: Start difference. First operand 102218 states and 125187 transitions. Second operand has 9 states, 9 states have (on average 17.22222222222222) internal successors, (155), 8 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:48:39,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:48:39,049 INFO L93 Difference]: Finished difference Result 198850 states and 243949 transitions. [2023-12-20 02:48:39,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 02:48:39,049 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 17.22222222222222) internal successors, (155), 8 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 155 [2023-12-20 02:48:39,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:48:39,423 INFO L225 Difference]: With dead ends: 198850 [2023-12-20 02:48:39,423 INFO L226 Difference]: Without dead ends: 145012 [2023-12-20 02:48:39,492 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=121, Invalid=341, Unknown=0, NotChecked=0, Total=462 [2023-12-20 02:48:39,506 INFO L413 NwaCegarLoop]: 493 mSDtfsCounter, 3683 mSDsluCounter, 1918 mSDsCounter, 0 mSdLazyCounter, 1605 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3683 SdHoareTripleChecker+Valid, 2411 SdHoareTripleChecker+Invalid, 1611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1605 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-20 02:48:39,506 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3683 Valid, 2411 Invalid, 1611 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1605 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-20 02:48:39,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145012 states. [2023-12-20 02:48:40,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145012 to 98909. [2023-12-20 02:48:40,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98909 states, 98908 states have (on average 1.2260888906862943) internal successors, (121270), 98908 states have internal predecessors, (121270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:48:40,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98909 states to 98909 states and 121270 transitions. [2023-12-20 02:48:40,826 INFO L78 Accepts]: Start accepts. Automaton has 98909 states and 121270 transitions. Word has length 155 [2023-12-20 02:48:40,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:48:40,827 INFO L495 AbstractCegarLoop]: Abstraction has 98909 states and 121270 transitions. [2023-12-20 02:48:40,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.22222222222222) internal successors, (155), 8 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:48:40,827 INFO L276 IsEmpty]: Start isEmpty. Operand 98909 states and 121270 transitions. [2023-12-20 02:48:40,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-12-20 02:48:40,894 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:48:40,894 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:48:40,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-12-20 02:48:40,894 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:48:40,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:48:40,895 INFO L85 PathProgramCache]: Analyzing trace with hash 2083301889, now seen corresponding path program 1 times [2023-12-20 02:48:40,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:48:40,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809081802] [2023-12-20 02:48:40,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:48:40,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:48:40,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:48:41,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:48:41,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:48:41,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809081802] [2023-12-20 02:48:41,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809081802] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:48:41,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:48:41,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 02:48:41,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954000162] [2023-12-20 02:48:41,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:48:41,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 02:48:41,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:48:41,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 02:48:41,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 02:48:41,097 INFO L87 Difference]: Start difference. First operand 98909 states and 121270 transitions. Second operand has 5 states, 5 states have (on average 31.0) internal successors, (155), 5 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:48:41,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:48:41,955 INFO L93 Difference]: Finished difference Result 186409 states and 228076 transitions. [2023-12-20 02:48:41,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 02:48:41,955 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.0) internal successors, (155), 5 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 155 [2023-12-20 02:48:41,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:48:42,072 INFO L225 Difference]: With dead ends: 186409 [2023-12-20 02:48:42,073 INFO L226 Difference]: Without dead ends: 106881 [2023-12-20 02:48:42,127 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-12-20 02:48:42,127 INFO L413 NwaCegarLoop]: 389 mSDtfsCounter, 361 mSDsluCounter, 582 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 361 SdHoareTripleChecker+Valid, 971 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 02:48:42,128 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [361 Valid, 971 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 02:48:42,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106881 states. [2023-12-20 02:48:43,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106881 to 83058. [2023-12-20 02:48:43,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83058 states, 83057 states have (on average 1.220222257004226) internal successors, (101348), 83057 states have internal predecessors, (101348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:48:43,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83058 states to 83058 states and 101348 transitions. [2023-12-20 02:48:43,267 INFO L78 Accepts]: Start accepts. Automaton has 83058 states and 101348 transitions. Word has length 155 [2023-12-20 02:48:43,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:48:43,267 INFO L495 AbstractCegarLoop]: Abstraction has 83058 states and 101348 transitions. [2023-12-20 02:48:43,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.0) internal successors, (155), 5 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:48:43,267 INFO L276 IsEmpty]: Start isEmpty. Operand 83058 states and 101348 transitions. [2023-12-20 02:48:43,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-20 02:48:43,304 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:48:43,305 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:48:43,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-12-20 02:48:43,305 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:48:43,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:48:43,306 INFO L85 PathProgramCache]: Analyzing trace with hash -1090282220, now seen corresponding path program 1 times [2023-12-20 02:48:43,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:48:43,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053184228] [2023-12-20 02:48:43,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:48:43,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:48:43,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:48:43,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:48:43,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:48:43,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053184228] [2023-12-20 02:48:43,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053184228] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:48:43,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:48:43,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 02:48:43,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274037344] [2023-12-20 02:48:43,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:48:43,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 02:48:43,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:48:43,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 02:48:43,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 02:48:43,489 INFO L87 Difference]: Start difference. First operand 83058 states and 101348 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 6 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:48:44,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:48:44,348 INFO L93 Difference]: Finished difference Result 142572 states and 173125 transitions. [2023-12-20 02:48:44,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-20 02:48:44,349 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 6 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 161 [2023-12-20 02:48:44,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:48:44,464 INFO L225 Difference]: With dead ends: 142572 [2023-12-20 02:48:44,464 INFO L226 Difference]: Without dead ends: 127094 [2023-12-20 02:48:44,490 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2023-12-20 02:48:44,490 INFO L413 NwaCegarLoop]: 261 mSDtfsCounter, 3168 mSDsluCounter, 526 mSDsCounter, 0 mSdLazyCounter, 574 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3168 SdHoareTripleChecker+Valid, 787 SdHoareTripleChecker+Invalid, 596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-20 02:48:44,490 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3168 Valid, 787 Invalid, 596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 574 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-20 02:48:44,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127094 states. [2023-12-20 02:48:45,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127094 to 83521. [2023-12-20 02:48:45,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83521 states, 83520 states have (on average 1.219839559386973) internal successors, (101881), 83520 states have internal predecessors, (101881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:48:45,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83521 states to 83521 states and 101881 transitions. [2023-12-20 02:48:45,686 INFO L78 Accepts]: Start accepts. Automaton has 83521 states and 101881 transitions. Word has length 161 [2023-12-20 02:48:45,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:48:45,687 INFO L495 AbstractCegarLoop]: Abstraction has 83521 states and 101881 transitions. [2023-12-20 02:48:45,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 6 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:48:45,687 INFO L276 IsEmpty]: Start isEmpty. Operand 83521 states and 101881 transitions. [2023-12-20 02:48:45,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-20 02:48:45,726 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:48:45,726 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:48:45,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-12-20 02:48:45,727 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:48:45,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:48:45,727 INFO L85 PathProgramCache]: Analyzing trace with hash -530084122, now seen corresponding path program 1 times [2023-12-20 02:48:45,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:48:45,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825230417] [2023-12-20 02:48:45,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:48:45,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:48:45,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:48:45,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:48:45,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:48:45,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825230417] [2023-12-20 02:48:45,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825230417] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:48:45,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:48:45,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 02:48:45,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590194913] [2023-12-20 02:48:45,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:48:45,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 02:48:45,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:48:45,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 02:48:45,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 02:48:45,758 INFO L87 Difference]: Start difference. First operand 83521 states and 101881 transitions. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:48:46,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:48:46,282 INFO L93 Difference]: Finished difference Result 163568 states and 199734 transitions. [2023-12-20 02:48:46,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 02:48:46,283 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 161 [2023-12-20 02:48:46,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:48:46,361 INFO L225 Difference]: With dead ends: 163568 [2023-12-20 02:48:46,361 INFO L226 Difference]: Without dead ends: 80686 [2023-12-20 02:48:46,394 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 02:48:46,394 INFO L413 NwaCegarLoop]: 252 mSDtfsCounter, 329 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 280 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 02:48:46,395 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [329 Valid, 280 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 02:48:46,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80686 states. [2023-12-20 02:48:47,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80686 to 79946. [2023-12-20 02:48:47,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79946 states, 79945 states have (on average 1.2081305897804742) internal successors, (96584), 79945 states have internal predecessors, (96584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:48:47,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79946 states to 79946 states and 96584 transitions. [2023-12-20 02:48:47,462 INFO L78 Accepts]: Start accepts. Automaton has 79946 states and 96584 transitions. Word has length 161 [2023-12-20 02:48:47,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:48:47,462 INFO L495 AbstractCegarLoop]: Abstraction has 79946 states and 96584 transitions. [2023-12-20 02:48:47,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:48:47,462 INFO L276 IsEmpty]: Start isEmpty. Operand 79946 states and 96584 transitions. [2023-12-20 02:48:47,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-20 02:48:47,497 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:48:47,497 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:48:47,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2023-12-20 02:48:47,497 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:48:47,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:48:47,497 INFO L85 PathProgramCache]: Analyzing trace with hash -338625030, now seen corresponding path program 1 times [2023-12-20 02:48:47,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:48:47,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555160012] [2023-12-20 02:48:47,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:48:47,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:48:47,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:48:47,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:48:47,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:48:47,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555160012] [2023-12-20 02:48:47,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555160012] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:48:47,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:48:47,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 02:48:47,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375674258] [2023-12-20 02:48:47,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:48:47,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 02:48:47,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:48:47,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 02:48:47,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 02:48:47,590 INFO L87 Difference]: Start difference. First operand 79946 states and 96584 transitions. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 6 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:48:48,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:48:48,293 INFO L93 Difference]: Finished difference Result 189839 states and 228881 transitions. [2023-12-20 02:48:48,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-20 02:48:48,293 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 6 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 161 [2023-12-20 02:48:48,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:48:48,637 INFO L225 Difference]: With dead ends: 189839 [2023-12-20 02:48:48,637 INFO L226 Difference]: Without dead ends: 163379 [2023-12-20 02:48:48,648 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2023-12-20 02:48:48,648 INFO L413 NwaCegarLoop]: 304 mSDtfsCounter, 2798 mSDsluCounter, 492 mSDsCounter, 0 mSdLazyCounter, 570 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2798 SdHoareTripleChecker+Valid, 796 SdHoareTripleChecker+Invalid, 592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 570 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-20 02:48:48,648 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2798 Valid, 796 Invalid, 592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 570 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-20 02:48:48,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163379 states. [2023-12-20 02:48:49,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163379 to 80378. [2023-12-20 02:48:49,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80378 states, 80377 states have (on average 1.2077086728790574) internal successors, (97072), 80377 states have internal predecessors, (97072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:48:49,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80378 states to 80378 states and 97072 transitions. [2023-12-20 02:48:49,833 INFO L78 Accepts]: Start accepts. Automaton has 80378 states and 97072 transitions. Word has length 161 [2023-12-20 02:48:49,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:48:49,833 INFO L495 AbstractCegarLoop]: Abstraction has 80378 states and 97072 transitions. [2023-12-20 02:48:49,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 6 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:48:49,833 INFO L276 IsEmpty]: Start isEmpty. Operand 80378 states and 97072 transitions. [2023-12-20 02:48:49,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-20 02:48:49,872 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:48:49,872 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:48:49,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2023-12-20 02:48:49,873 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:48:49,873 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:48:49,873 INFO L85 PathProgramCache]: Analyzing trace with hash 1313489836, now seen corresponding path program 1 times [2023-12-20 02:48:49,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:48:49,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994345166] [2023-12-20 02:48:49,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:48:49,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:48:49,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:48:49,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:48:49,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:48:49,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994345166] [2023-12-20 02:48:49,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994345166] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:48:49,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:48:49,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 02:48:49,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178570950] [2023-12-20 02:48:49,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:48:49,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 02:48:49,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:48:49,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 02:48:49,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 02:48:49,952 INFO L87 Difference]: Start difference. First operand 80378 states and 97072 transitions. Second operand has 7 states, 7 states have (on average 23.142857142857142) internal successors, (162), 6 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:48:50,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:48:50,779 INFO L93 Difference]: Finished difference Result 173493 states and 209401 transitions. [2023-12-20 02:48:50,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-20 02:48:50,780 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.142857142857142) internal successors, (162), 6 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 162 [2023-12-20 02:48:50,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:48:50,935 INFO L225 Difference]: With dead ends: 173493 [2023-12-20 02:48:50,935 INFO L226 Difference]: Without dead ends: 159151 [2023-12-20 02:48:50,968 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2023-12-20 02:48:50,973 INFO L413 NwaCegarLoop]: 257 mSDtfsCounter, 2902 mSDsluCounter, 464 mSDsCounter, 0 mSdLazyCounter, 517 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2902 SdHoareTripleChecker+Valid, 721 SdHoareTripleChecker+Invalid, 544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 517 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-20 02:48:50,973 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2902 Valid, 721 Invalid, 544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 517 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-20 02:48:51,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159151 states. [2023-12-20 02:48:52,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159151 to 80889. [2023-12-20 02:48:52,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80889 states, 80888 states have (on average 1.2072989813074868) internal successors, (97656), 80888 states have internal predecessors, (97656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:48:52,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80889 states to 80889 states and 97656 transitions. [2023-12-20 02:48:52,261 INFO L78 Accepts]: Start accepts. Automaton has 80889 states and 97656 transitions. Word has length 162 [2023-12-20 02:48:52,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:48:52,261 INFO L495 AbstractCegarLoop]: Abstraction has 80889 states and 97656 transitions. [2023-12-20 02:48:52,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.142857142857142) internal successors, (162), 6 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:48:52,261 INFO L276 IsEmpty]: Start isEmpty. Operand 80889 states and 97656 transitions. [2023-12-20 02:48:52,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2023-12-20 02:48:52,297 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:48:52,298 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:48:52,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2023-12-20 02:48:52,316 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:48:52,317 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:48:52,317 INFO L85 PathProgramCache]: Analyzing trace with hash -609012045, now seen corresponding path program 1 times [2023-12-20 02:48:52,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:48:52,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111182470] [2023-12-20 02:48:52,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:48:52,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:48:52,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:48:52,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:48:52,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:48:52,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111182470] [2023-12-20 02:48:52,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111182470] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:48:52,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:48:52,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 02:48:52,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023569430] [2023-12-20 02:48:52,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:48:52,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-20 02:48:52,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:48:52,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-20 02:48:52,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-20 02:48:52,411 INFO L87 Difference]: Start difference. First operand 80889 states and 97656 transitions. Second operand has 7 states, 7 states have (on average 23.285714285714285) internal successors, (163), 6 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:48:53,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:48:53,128 INFO L93 Difference]: Finished difference Result 149655 states and 180721 transitions. [2023-12-20 02:48:53,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-20 02:48:53,129 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.285714285714285) internal successors, (163), 6 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 163 [2023-12-20 02:48:53,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:48:53,250 INFO L225 Difference]: With dead ends: 149655 [2023-12-20 02:48:53,250 INFO L226 Difference]: Without dead ends: 124018 [2023-12-20 02:48:53,291 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2023-12-20 02:48:53,291 INFO L413 NwaCegarLoop]: 244 mSDtfsCounter, 2708 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 364 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2708 SdHoareTripleChecker+Valid, 567 SdHoareTripleChecker+Invalid, 393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-20 02:48:53,292 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2708 Valid, 567 Invalid, 393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 364 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-20 02:48:53,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124018 states. [2023-12-20 02:48:54,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124018 to 81021. [2023-12-20 02:48:54,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81021 states, 81020 states have (on average 1.2070970130831893) internal successors, (97799), 81020 states have internal predecessors, (97799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:48:54,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81021 states to 81021 states and 97799 transitions. [2023-12-20 02:48:54,435 INFO L78 Accepts]: Start accepts. Automaton has 81021 states and 97799 transitions. Word has length 163 [2023-12-20 02:48:54,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:48:54,435 INFO L495 AbstractCegarLoop]: Abstraction has 81021 states and 97799 transitions. [2023-12-20 02:48:54,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.285714285714285) internal successors, (163), 6 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:48:54,435 INFO L276 IsEmpty]: Start isEmpty. Operand 81021 states and 97799 transitions. [2023-12-20 02:48:54,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2023-12-20 02:48:54,473 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:48:54,473 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:48:54,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2023-12-20 02:48:54,474 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:48:54,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:48:54,474 INFO L85 PathProgramCache]: Analyzing trace with hash -1145598337, now seen corresponding path program 1 times [2023-12-20 02:48:54,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:48:54,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345320841] [2023-12-20 02:48:54,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:48:54,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:48:54,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:48:54,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:48:54,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:48:54,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345320841] [2023-12-20 02:48:54,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345320841] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:48:54,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:48:54,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 02:48:54,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482513030] [2023-12-20 02:48:54,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:48:54,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 02:48:54,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:48:54,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 02:48:54,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 02:48:54,573 INFO L87 Difference]: Start difference. First operand 81021 states and 97799 transitions. Second operand has 5 states, 5 states have (on average 32.6) internal successors, (163), 5 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:48:55,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:48:55,343 INFO L93 Difference]: Finished difference Result 169738 states and 205110 transitions. [2023-12-20 02:48:55,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-20 02:48:55,343 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.6) internal successors, (163), 5 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 163 [2023-12-20 02:48:55,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:48:55,492 INFO L225 Difference]: With dead ends: 169738 [2023-12-20 02:48:55,493 INFO L226 Difference]: Without dead ends: 149238 [2023-12-20 02:48:55,537 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-12-20 02:48:55,537 INFO L413 NwaCegarLoop]: 278 mSDtfsCounter, 1283 mSDsluCounter, 514 mSDsCounter, 0 mSdLazyCounter, 448 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1283 SdHoareTripleChecker+Valid, 792 SdHoareTripleChecker+Invalid, 468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-20 02:48:55,537 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1283 Valid, 792 Invalid, 468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 448 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-20 02:48:55,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149238 states. [2023-12-20 02:48:56,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149238 to 82513. [2023-12-20 02:48:56,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82513 states, 82512 states have (on average 1.2045763040527437) internal successors, (99392), 82512 states have internal predecessors, (99392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:48:56,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82513 states to 82513 states and 99392 transitions. [2023-12-20 02:48:56,830 INFO L78 Accepts]: Start accepts. Automaton has 82513 states and 99392 transitions. Word has length 163 [2023-12-20 02:48:56,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:48:56,830 INFO L495 AbstractCegarLoop]: Abstraction has 82513 states and 99392 transitions. [2023-12-20 02:48:56,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.6) internal successors, (163), 5 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:48:56,831 INFO L276 IsEmpty]: Start isEmpty. Operand 82513 states and 99392 transitions. [2023-12-20 02:48:57,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2023-12-20 02:48:57,019 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:48:57,019 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:48:57,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2023-12-20 02:48:57,019 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:48:57,019 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:48:57,019 INFO L85 PathProgramCache]: Analyzing trace with hash -1292420287, now seen corresponding path program 1 times [2023-12-20 02:48:57,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:48:57,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661682751] [2023-12-20 02:48:57,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:48:57,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:48:57,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:48:57,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:48:57,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:48:57,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661682751] [2023-12-20 02:48:57,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661682751] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:48:57,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:48:57,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 02:48:57,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524027546] [2023-12-20 02:48:57,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:48:57,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 02:48:57,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:48:57,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 02:48:57,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 02:48:57,144 INFO L87 Difference]: Start difference. First operand 82513 states and 99392 transitions. Second operand has 5 states, 5 states have (on average 32.6) internal successors, (163), 5 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:48:57,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:48:57,755 INFO L93 Difference]: Finished difference Result 230419 states and 277840 transitions. [2023-12-20 02:48:57,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-20 02:48:57,755 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.6) internal successors, (163), 5 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 163 [2023-12-20 02:48:57,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:48:58,181 INFO L225 Difference]: With dead ends: 230419 [2023-12-20 02:48:58,182 INFO L226 Difference]: Without dead ends: 149428 [2023-12-20 02:48:58,225 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-12-20 02:48:58,226 INFO L413 NwaCegarLoop]: 266 mSDtfsCounter, 1230 mSDsluCounter, 444 mSDsCounter, 0 mSdLazyCounter, 385 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1230 SdHoareTripleChecker+Valid, 710 SdHoareTripleChecker+Invalid, 415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-20 02:48:58,226 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1230 Valid, 710 Invalid, 415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 385 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-20 02:48:58,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149428 states. [2023-12-20 02:48:59,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149428 to 81900. [2023-12-20 02:48:59,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81900 states, 81899 states have (on average 1.1880975347684344) internal successors, (97304), 81899 states have internal predecessors, (97304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:48:59,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81900 states to 81900 states and 97304 transitions. [2023-12-20 02:48:59,573 INFO L78 Accepts]: Start accepts. Automaton has 81900 states and 97304 transitions. Word has length 163 [2023-12-20 02:48:59,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:48:59,574 INFO L495 AbstractCegarLoop]: Abstraction has 81900 states and 97304 transitions. [2023-12-20 02:48:59,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.6) internal successors, (163), 5 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:48:59,574 INFO L276 IsEmpty]: Start isEmpty. Operand 81900 states and 97304 transitions. [2023-12-20 02:48:59,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2023-12-20 02:48:59,615 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:48:59,615 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:48:59,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2023-12-20 02:48:59,615 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:48:59,616 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:48:59,616 INFO L85 PathProgramCache]: Analyzing trace with hash -2045208397, now seen corresponding path program 1 times [2023-12-20 02:48:59,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:48:59,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525346002] [2023-12-20 02:48:59,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:48:59,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:48:59,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:48:59,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:48:59,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:48:59,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525346002] [2023-12-20 02:48:59,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525346002] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:48:59,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:48:59,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 02:48:59,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992745072] [2023-12-20 02:48:59,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:48:59,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 02:48:59,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:48:59,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 02:48:59,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 02:48:59,678 INFO L87 Difference]: Start difference. First operand 81900 states and 97304 transitions. Second operand has 5 states, 5 states have (on average 32.8) internal successors, (164), 5 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:49:00,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:49:00,516 INFO L93 Difference]: Finished difference Result 220447 states and 262713 transitions. [2023-12-20 02:49:00,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-20 02:49:00,516 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.8) internal successors, (164), 5 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 164 [2023-12-20 02:49:00,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:49:00,660 INFO L225 Difference]: With dead ends: 220447 [2023-12-20 02:49:00,661 INFO L226 Difference]: Without dead ends: 140166 [2023-12-20 02:49:00,686 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-12-20 02:49:00,693 INFO L413 NwaCegarLoop]: 253 mSDtfsCounter, 1181 mSDsluCounter, 423 mSDsCounter, 0 mSdLazyCounter, 350 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1181 SdHoareTripleChecker+Valid, 676 SdHoareTripleChecker+Invalid, 384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-20 02:49:00,694 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1181 Valid, 676 Invalid, 384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 350 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-20 02:49:00,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140166 states. [2023-12-20 02:49:01,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140166 to 80844. [2023-12-20 02:49:01,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80844 states, 80843 states have (on average 1.1816360105389458) internal successors, (95527), 80843 states have internal predecessors, (95527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:49:01,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80844 states to 80844 states and 95527 transitions. [2023-12-20 02:49:01,853 INFO L78 Accepts]: Start accepts. Automaton has 80844 states and 95527 transitions. Word has length 164 [2023-12-20 02:49:01,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:49:01,855 INFO L495 AbstractCegarLoop]: Abstraction has 80844 states and 95527 transitions. [2023-12-20 02:49:01,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.8) internal successors, (164), 5 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:49:01,855 INFO L276 IsEmpty]: Start isEmpty. Operand 80844 states and 95527 transitions. [2023-12-20 02:49:01,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2023-12-20 02:49:01,891 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:49:01,891 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:49:01,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2023-12-20 02:49:01,892 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:49:01,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:49:01,892 INFO L85 PathProgramCache]: Analyzing trace with hash -180972713, now seen corresponding path program 1 times [2023-12-20 02:49:01,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:49:01,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990807231] [2023-12-20 02:49:01,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:49:01,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:49:01,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:49:01,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:49:01,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:49:01,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990807231] [2023-12-20 02:49:01,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990807231] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:49:01,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:49:01,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 02:49:01,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640496510] [2023-12-20 02:49:01,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:49:01,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 02:49:01,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:49:01,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 02:49:01,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 02:49:01,968 INFO L87 Difference]: Start difference. First operand 80844 states and 95527 transitions. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:49:02,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:49:02,213 INFO L93 Difference]: Finished difference Result 121277 states and 143305 transitions. [2023-12-20 02:49:02,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 02:49:02,215 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 164 [2023-12-20 02:49:02,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:49:02,502 INFO L225 Difference]: With dead ends: 121277 [2023-12-20 02:49:02,502 INFO L226 Difference]: Without dead ends: 91064 [2023-12-20 02:49:02,524 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 02:49:02,524 INFO L413 NwaCegarLoop]: 351 mSDtfsCounter, 311 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 604 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 02:49:02,524 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [311 Valid, 604 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 02:49:02,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91064 states. [2023-12-20 02:49:03,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91064 to 77016. [2023-12-20 02:49:03,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77016 states, 77015 states have (on average 1.1815490488865805) internal successors, (90997), 77015 states have internal predecessors, (90997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:49:03,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77016 states to 77016 states and 90997 transitions. [2023-12-20 02:49:03,423 INFO L78 Accepts]: Start accepts. Automaton has 77016 states and 90997 transitions. Word has length 164 [2023-12-20 02:49:03,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:49:03,423 INFO L495 AbstractCegarLoop]: Abstraction has 77016 states and 90997 transitions. [2023-12-20 02:49:03,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:49:03,423 INFO L276 IsEmpty]: Start isEmpty. Operand 77016 states and 90997 transitions. [2023-12-20 02:49:03,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2023-12-20 02:49:03,458 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:49:03,458 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:49:03,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2023-12-20 02:49:03,459 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:49:03,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:49:03,459 INFO L85 PathProgramCache]: Analyzing trace with hash -1104838702, now seen corresponding path program 1 times [2023-12-20 02:49:03,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:49:03,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209019910] [2023-12-20 02:49:03,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:49:03,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:49:03,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:49:03,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:49:03,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:49:03,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209019910] [2023-12-20 02:49:03,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209019910] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:49:03,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:49:03,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 02:49:03,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035369370] [2023-12-20 02:49:03,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:49:03,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 02:49:03,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:49:03,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 02:49:03,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 02:49:03,514 INFO L87 Difference]: Start difference. First operand 77016 states and 90997 transitions. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:49:03,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:49:03,969 INFO L93 Difference]: Finished difference Result 141143 states and 167151 transitions. [2023-12-20 02:49:03,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 02:49:03,970 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 164 [2023-12-20 02:49:03,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:49:04,060 INFO L225 Difference]: With dead ends: 141143 [2023-12-20 02:49:04,060 INFO L226 Difference]: Without dead ends: 98156 [2023-12-20 02:49:04,088 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 02:49:04,090 INFO L413 NwaCegarLoop]: 365 mSDtfsCounter, 309 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 613 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 02:49:04,090 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [309 Valid, 613 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 02:49:04,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98156 states. [2023-12-20 02:49:04,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98156 to 69975. [2023-12-20 02:49:04,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69975 states, 69974 states have (on average 1.1821962443193186) internal successors, (82723), 69974 states have internal predecessors, (82723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:49:05,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69975 states to 69975 states and 82723 transitions. [2023-12-20 02:49:05,167 INFO L78 Accepts]: Start accepts. Automaton has 69975 states and 82723 transitions. Word has length 164 [2023-12-20 02:49:05,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:49:05,167 INFO L495 AbstractCegarLoop]: Abstraction has 69975 states and 82723 transitions. [2023-12-20 02:49:05,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:49:05,167 INFO L276 IsEmpty]: Start isEmpty. Operand 69975 states and 82723 transitions. [2023-12-20 02:49:05,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2023-12-20 02:49:05,196 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:49:05,196 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:49:05,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2023-12-20 02:49:05,196 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:49:05,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:49:05,197 INFO L85 PathProgramCache]: Analyzing trace with hash -545798544, now seen corresponding path program 1 times [2023-12-20 02:49:05,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:49:05,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974193076] [2023-12-20 02:49:05,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:49:05,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:49:05,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:49:05,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:49:05,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:49:05,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974193076] [2023-12-20 02:49:05,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974193076] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:49:05,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:49:05,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 02:49:05,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321627561] [2023-12-20 02:49:05,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:49:05,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 02:49:05,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:49:05,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 02:49:05,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 02:49:05,262 INFO L87 Difference]: Start difference. First operand 69975 states and 82723 transitions. Second operand has 5 states, 5 states have (on average 33.0) internal successors, (165), 5 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:49:05,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:49:05,682 INFO L93 Difference]: Finished difference Result 156862 states and 186189 transitions. [2023-12-20 02:49:05,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-20 02:49:05,683 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.0) internal successors, (165), 5 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 165 [2023-12-20 02:49:05,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:49:05,823 INFO L225 Difference]: With dead ends: 156862 [2023-12-20 02:49:05,823 INFO L226 Difference]: Without dead ends: 127332 [2023-12-20 02:49:05,875 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-12-20 02:49:05,876 INFO L413 NwaCegarLoop]: 248 mSDtfsCounter, 1113 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1113 SdHoareTripleChecker+Valid, 565 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 02:49:05,877 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1113 Valid, 565 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 02:49:05,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127332 states. [2023-12-20 02:49:06,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127332 to 70131. [2023-12-20 02:49:07,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70131 states, 70130 states have (on average 1.1799372593754456) internal successors, (82749), 70130 states have internal predecessors, (82749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:49:07,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70131 states to 70131 states and 82749 transitions. [2023-12-20 02:49:07,116 INFO L78 Accepts]: Start accepts. Automaton has 70131 states and 82749 transitions. Word has length 165 [2023-12-20 02:49:07,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:49:07,116 INFO L495 AbstractCegarLoop]: Abstraction has 70131 states and 82749 transitions. [2023-12-20 02:49:07,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.0) internal successors, (165), 5 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:49:07,116 INFO L276 IsEmpty]: Start isEmpty. Operand 70131 states and 82749 transitions. [2023-12-20 02:49:07,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2023-12-20 02:49:07,151 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:49:07,151 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:49:07,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2023-12-20 02:49:07,152 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:49:07,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:49:07,152 INFO L85 PathProgramCache]: Analyzing trace with hash -1612530717, now seen corresponding path program 1 times [2023-12-20 02:49:07,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:49:07,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629673407] [2023-12-20 02:49:07,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:49:07,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:49:07,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:49:07,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:49:07,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:49:07,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629673407] [2023-12-20 02:49:07,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629673407] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:49:07,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:49:07,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 02:49:07,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658037971] [2023-12-20 02:49:07,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:49:07,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 02:49:07,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:49:07,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 02:49:07,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 02:49:07,199 INFO L87 Difference]: Start difference. First operand 70131 states and 82749 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:49:07,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:49:07,605 INFO L93 Difference]: Finished difference Result 123156 states and 145276 transitions. [2023-12-20 02:49:07,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 02:49:07,607 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 165 [2023-12-20 02:49:07,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:49:07,695 INFO L225 Difference]: With dead ends: 123156 [2023-12-20 02:49:07,695 INFO L226 Difference]: Without dead ends: 92745 [2023-12-20 02:49:07,727 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 02:49:07,728 INFO L413 NwaCegarLoop]: 347 mSDtfsCounter, 294 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 586 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 02:49:07,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [294 Valid, 586 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 02:49:07,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92745 states. [2023-12-20 02:49:08,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92745 to 75893. [2023-12-20 02:49:08,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75893 states, 75892 states have (on average 1.1781742476150319) internal successors, (89414), 75892 states have internal predecessors, (89414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:49:08,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75893 states to 75893 states and 89414 transitions. [2023-12-20 02:49:08,741 INFO L78 Accepts]: Start accepts. Automaton has 75893 states and 89414 transitions. Word has length 165 [2023-12-20 02:49:08,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:49:08,741 INFO L495 AbstractCegarLoop]: Abstraction has 75893 states and 89414 transitions. [2023-12-20 02:49:08,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:49:08,742 INFO L276 IsEmpty]: Start isEmpty. Operand 75893 states and 89414 transitions. [2023-12-20 02:49:08,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2023-12-20 02:49:08,770 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:49:08,770 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:49:08,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2023-12-20 02:49:08,771 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:49:08,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:49:08,772 INFO L85 PathProgramCache]: Analyzing trace with hash 17808513, now seen corresponding path program 1 times [2023-12-20 02:49:08,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:49:08,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588229588] [2023-12-20 02:49:08,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:49:08,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:49:08,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:49:08,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:49:08,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:49:08,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588229588] [2023-12-20 02:49:08,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588229588] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:49:08,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:49:08,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 02:49:08,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996401030] [2023-12-20 02:49:08,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:49:08,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 02:49:08,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:49:08,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 02:49:08,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 02:49:08,851 INFO L87 Difference]: Start difference. First operand 75893 states and 89414 transitions. Second operand has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:49:09,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:49:09,158 INFO L93 Difference]: Finished difference Result 141362 states and 166877 transitions. [2023-12-20 02:49:09,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 02:49:09,159 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 166 [2023-12-20 02:49:09,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:49:09,268 INFO L225 Difference]: With dead ends: 141362 [2023-12-20 02:49:09,268 INFO L226 Difference]: Without dead ends: 99232 [2023-12-20 02:49:09,308 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 02:49:09,309 INFO L413 NwaCegarLoop]: 352 mSDtfsCounter, 287 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 586 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 02:49:09,311 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [287 Valid, 586 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 02:49:09,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99232 states. [2023-12-20 02:49:10,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99232 to 70753. [2023-12-20 02:49:10,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70753 states, 70752 states have (on average 1.1776628222523744) internal successors, (83322), 70752 states have internal predecessors, (83322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:49:10,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70753 states to 70753 states and 83322 transitions. [2023-12-20 02:49:10,301 INFO L78 Accepts]: Start accepts. Automaton has 70753 states and 83322 transitions. Word has length 166 [2023-12-20 02:49:10,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:49:10,301 INFO L495 AbstractCegarLoop]: Abstraction has 70753 states and 83322 transitions. [2023-12-20 02:49:10,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:49:10,301 INFO L276 IsEmpty]: Start isEmpty. Operand 70753 states and 83322 transitions. [2023-12-20 02:49:10,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2023-12-20 02:49:10,327 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:49:10,327 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:49:10,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2023-12-20 02:49:10,327 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:49:10,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:49:10,328 INFO L85 PathProgramCache]: Analyzing trace with hash -1655108088, now seen corresponding path program 1 times [2023-12-20 02:49:10,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:49:10,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165008784] [2023-12-20 02:49:10,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:49:10,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:49:10,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:49:10,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:49:10,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:49:10,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165008784] [2023-12-20 02:49:10,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165008784] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:49:10,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:49:10,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-20 02:49:10,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300628240] [2023-12-20 02:49:10,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:49:10,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-20 02:49:10,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:49:10,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-20 02:49:10,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-20 02:49:10,757 INFO L87 Difference]: Start difference. First operand 70753 states and 83322 transitions. Second operand has 9 states, 9 states have (on average 18.555555555555557) internal successors, (167), 8 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:49:12,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:49:12,032 INFO L93 Difference]: Finished difference Result 190349 states and 224922 transitions. [2023-12-20 02:49:12,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-20 02:49:12,032 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 18.555555555555557) internal successors, (167), 8 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 167 [2023-12-20 02:49:12,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:49:12,195 INFO L225 Difference]: With dead ends: 190349 [2023-12-20 02:49:12,196 INFO L226 Difference]: Without dead ends: 161992 [2023-12-20 02:49:12,243 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=81, Invalid=225, Unknown=0, NotChecked=0, Total=306 [2023-12-20 02:49:12,244 INFO L413 NwaCegarLoop]: 364 mSDtfsCounter, 1544 mSDsluCounter, 2133 mSDsCounter, 0 mSdLazyCounter, 1515 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1544 SdHoareTripleChecker+Valid, 2497 SdHoareTripleChecker+Invalid, 1518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-20 02:49:12,244 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1544 Valid, 2497 Invalid, 1518 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1515 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-20 02:49:12,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161992 states. [2023-12-20 02:49:13,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161992 to 71667. [2023-12-20 02:49:13,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71667 states, 71666 states have (on average 1.1740992939469204) internal successors, (84143), 71666 states have internal predecessors, (84143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:49:13,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71667 states to 71667 states and 84143 transitions. [2023-12-20 02:49:13,518 INFO L78 Accepts]: Start accepts. Automaton has 71667 states and 84143 transitions. Word has length 167 [2023-12-20 02:49:13,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:49:13,518 INFO L495 AbstractCegarLoop]: Abstraction has 71667 states and 84143 transitions. [2023-12-20 02:49:13,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 18.555555555555557) internal successors, (167), 8 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:49:13,518 INFO L276 IsEmpty]: Start isEmpty. Operand 71667 states and 84143 transitions. [2023-12-20 02:49:13,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2023-12-20 02:49:13,547 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:49:13,547 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:49:13,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2023-12-20 02:49:13,547 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:49:13,548 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:49:13,548 INFO L85 PathProgramCache]: Analyzing trace with hash -2022704250, now seen corresponding path program 1 times [2023-12-20 02:49:13,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:49:13,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702343427] [2023-12-20 02:49:13,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:49:13,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:49:13,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:49:13,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:49:13,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:49:13,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702343427] [2023-12-20 02:49:13,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702343427] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:49:13,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:49:13,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 02:49:13,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437051869] [2023-12-20 02:49:13,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:49:13,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 02:49:13,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:49:13,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 02:49:13,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 02:49:13,788 INFO L87 Difference]: Start difference. First operand 71667 states and 84143 transitions. Second operand has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:49:14,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:49:14,053 INFO L93 Difference]: Finished difference Result 109306 states and 129024 transitions. [2023-12-20 02:49:14,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 02:49:14,053 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 167 [2023-12-20 02:49:14,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:49:14,141 INFO L225 Difference]: With dead ends: 109306 [2023-12-20 02:49:14,141 INFO L226 Difference]: Without dead ends: 90234 [2023-12-20 02:49:14,174 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 02:49:14,175 INFO L413 NwaCegarLoop]: 584 mSDtfsCounter, 209 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 892 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 02:49:14,175 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 892 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 02:49:14,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90234 states. [2023-12-20 02:49:14,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90234 to 75854. [2023-12-20 02:49:14,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75854 states, 75853 states have (on average 1.1776198700117333) internal successors, (89326), 75853 states have internal predecessors, (89326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:49:15,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75854 states to 75854 states and 89326 transitions. [2023-12-20 02:49:15,248 INFO L78 Accepts]: Start accepts. Automaton has 75854 states and 89326 transitions. Word has length 167 [2023-12-20 02:49:15,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:49:15,248 INFO L495 AbstractCegarLoop]: Abstraction has 75854 states and 89326 transitions. [2023-12-20 02:49:15,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:49:15,248 INFO L276 IsEmpty]: Start isEmpty. Operand 75854 states and 89326 transitions. [2023-12-20 02:49:15,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2023-12-20 02:49:15,276 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:49:15,276 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:49:15,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2023-12-20 02:49:15,276 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:49:15,276 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:49:15,277 INFO L85 PathProgramCache]: Analyzing trace with hash -2116946000, now seen corresponding path program 1 times [2023-12-20 02:49:15,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:49:15,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930356664] [2023-12-20 02:49:15,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:49:15,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:49:15,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:49:15,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:49:15,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:49:15,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930356664] [2023-12-20 02:49:15,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930356664] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:49:15,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:49:15,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-20 02:49:15,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164851921] [2023-12-20 02:49:15,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:49:15,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-20 02:49:15,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:49:15,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-20 02:49:15,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-20 02:49:15,447 INFO L87 Difference]: Start difference. First operand 75854 states and 89326 transitions. Second operand has 9 states, 9 states have (on average 18.666666666666668) internal successors, (168), 8 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:49:16,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:49:16,651 INFO L93 Difference]: Finished difference Result 201488 states and 238429 transitions. [2023-12-20 02:49:16,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 02:49:16,652 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 18.666666666666668) internal successors, (168), 8 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 168 [2023-12-20 02:49:16,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:49:16,819 INFO L225 Difference]: With dead ends: 201488 [2023-12-20 02:49:16,819 INFO L226 Difference]: Without dead ends: 172175 [2023-12-20 02:49:16,854 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=313, Unknown=0, NotChecked=0, Total=420 [2023-12-20 02:49:16,854 INFO L413 NwaCegarLoop]: 364 mSDtfsCounter, 1588 mSDsluCounter, 1536 mSDsCounter, 0 mSdLazyCounter, 1230 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1588 SdHoareTripleChecker+Valid, 1900 SdHoareTripleChecker+Invalid, 1235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-20 02:49:16,854 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1588 Valid, 1900 Invalid, 1235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1230 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-20 02:49:16,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172175 states. [2023-12-20 02:49:17,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172175 to 78152. [2023-12-20 02:49:18,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78152 states, 78151 states have (on average 1.1748794001356349) internal successors, (91818), 78151 states have internal predecessors, (91818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:49:18,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78152 states to 78152 states and 91818 transitions. [2023-12-20 02:49:18,147 INFO L78 Accepts]: Start accepts. Automaton has 78152 states and 91818 transitions. Word has length 168 [2023-12-20 02:49:18,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:49:18,147 INFO L495 AbstractCegarLoop]: Abstraction has 78152 states and 91818 transitions. [2023-12-20 02:49:18,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 18.666666666666668) internal successors, (168), 8 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:49:18,147 INFO L276 IsEmpty]: Start isEmpty. Operand 78152 states and 91818 transitions. [2023-12-20 02:49:18,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2023-12-20 02:49:18,177 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:49:18,177 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:49:18,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2023-12-20 02:49:18,177 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:49:18,178 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:49:18,178 INFO L85 PathProgramCache]: Analyzing trace with hash 1370599380, now seen corresponding path program 1 times [2023-12-20 02:49:18,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:49:18,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907524985] [2023-12-20 02:49:18,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:49:18,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:49:18,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:49:18,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:49:18,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:49:18,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907524985] [2023-12-20 02:49:18,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907524985] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:49:18,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:49:18,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 02:49:18,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195083251] [2023-12-20 02:49:18,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:49:18,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 02:49:18,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:49:18,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 02:49:18,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 02:49:18,216 INFO L87 Difference]: Start difference. First operand 78152 states and 91818 transitions. Second operand has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:49:18,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:49:18,664 INFO L93 Difference]: Finished difference Result 147397 states and 174286 transitions. [2023-12-20 02:49:18,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 02:49:18,664 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 168 [2023-12-20 02:49:18,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:49:18,781 INFO L225 Difference]: With dead ends: 147397 [2023-12-20 02:49:18,781 INFO L226 Difference]: Without dead ends: 116273 [2023-12-20 02:49:18,815 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 02:49:18,816 INFO L413 NwaCegarLoop]: 566 mSDtfsCounter, 191 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 878 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 02:49:18,816 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 878 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 02:49:18,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116273 states. [2023-12-20 02:49:19,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116273 to 86836. [2023-12-20 02:49:19,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86836 states, 86835 states have (on average 1.1756895261127425) internal successors, (102091), 86835 states have internal predecessors, (102091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:49:19,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86836 states to 86836 states and 102091 transitions. [2023-12-20 02:49:19,963 INFO L78 Accepts]: Start accepts. Automaton has 86836 states and 102091 transitions. Word has length 168 [2023-12-20 02:49:19,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:49:19,963 INFO L495 AbstractCegarLoop]: Abstraction has 86836 states and 102091 transitions. [2023-12-20 02:49:19,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:49:19,963 INFO L276 IsEmpty]: Start isEmpty. Operand 86836 states and 102091 transitions. [2023-12-20 02:49:19,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2023-12-20 02:49:19,997 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:49:19,998 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:49:19,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2023-12-20 02:49:19,998 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:49:19,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:49:19,998 INFO L85 PathProgramCache]: Analyzing trace with hash 225633322, now seen corresponding path program 1 times [2023-12-20 02:49:19,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:49:19,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724291209] [2023-12-20 02:49:19,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:49:19,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:49:20,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:49:20,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:49:20,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:49:20,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724291209] [2023-12-20 02:49:20,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724291209] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:49:20,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:49:20,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 02:49:20,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118300909] [2023-12-20 02:49:20,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:49:20,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 02:49:20,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:49:20,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 02:49:20,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 02:49:20,040 INFO L87 Difference]: Start difference. First operand 86836 states and 102091 transitions. Second operand has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:49:20,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:49:20,591 INFO L93 Difference]: Finished difference Result 166525 states and 196059 transitions. [2023-12-20 02:49:20,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 02:49:20,591 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 169 [2023-12-20 02:49:20,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:49:20,739 INFO L225 Difference]: With dead ends: 166525 [2023-12-20 02:49:20,740 INFO L226 Difference]: Without dead ends: 131865 [2023-12-20 02:49:20,771 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 02:49:20,772 INFO L413 NwaCegarLoop]: 550 mSDtfsCounter, 168 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 862 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 02:49:20,772 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 862 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 02:49:20,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131865 states. [2023-12-20 02:49:21,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131865 to 98434. [2023-12-20 02:49:21,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98434 states, 98433 states have (on average 1.1668546117663792) internal successors, (114857), 98433 states have internal predecessors, (114857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:49:22,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98434 states to 98434 states and 114857 transitions. [2023-12-20 02:49:22,100 INFO L78 Accepts]: Start accepts. Automaton has 98434 states and 114857 transitions. Word has length 169 [2023-12-20 02:49:22,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:49:22,100 INFO L495 AbstractCegarLoop]: Abstraction has 98434 states and 114857 transitions. [2023-12-20 02:49:22,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:49:22,100 INFO L276 IsEmpty]: Start isEmpty. Operand 98434 states and 114857 transitions. [2023-12-20 02:49:22,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2023-12-20 02:49:22,138 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:49:22,139 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:49:22,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2023-12-20 02:49:22,139 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:49:22,139 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:49:22,139 INFO L85 PathProgramCache]: Analyzing trace with hash 849933439, now seen corresponding path program 1 times [2023-12-20 02:49:22,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:49:22,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127093267] [2023-12-20 02:49:22,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:49:22,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:49:22,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:49:22,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:49:22,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:49:22,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127093267] [2023-12-20 02:49:22,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127093267] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:49:22,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:49:22,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 02:49:22,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467143931] [2023-12-20 02:49:22,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:49:22,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 02:49:22,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:49:22,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 02:49:22,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 02:49:22,179 INFO L87 Difference]: Start difference. First operand 98434 states and 114857 transitions. Second operand has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:49:22,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:49:22,748 INFO L93 Difference]: Finished difference Result 163538 states and 191005 transitions. [2023-12-20 02:49:22,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 02:49:22,749 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 169 [2023-12-20 02:49:22,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:49:22,886 INFO L225 Difference]: With dead ends: 163538 [2023-12-20 02:49:22,886 INFO L226 Difference]: Without dead ends: 129844 [2023-12-20 02:49:22,916 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 02:49:22,916 INFO L413 NwaCegarLoop]: 554 mSDtfsCounter, 178 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 862 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 02:49:22,916 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 862 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 02:49:22,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129844 states. [2023-12-20 02:49:24,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129844 to 105909. [2023-12-20 02:49:24,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105909 states, 105908 states have (on average 1.162348453374627) internal successors, (123102), 105908 states have internal predecessors, (123102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:49:24,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105909 states to 105909 states and 123102 transitions. [2023-12-20 02:49:24,366 INFO L78 Accepts]: Start accepts. Automaton has 105909 states and 123102 transitions. Word has length 169 [2023-12-20 02:49:24,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:49:24,367 INFO L495 AbstractCegarLoop]: Abstraction has 105909 states and 123102 transitions. [2023-12-20 02:49:24,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:49:24,367 INFO L276 IsEmpty]: Start isEmpty. Operand 105909 states and 123102 transitions. [2023-12-20 02:49:24,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2023-12-20 02:49:24,412 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:49:24,412 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:49:24,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2023-12-20 02:49:24,413 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:49:24,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:49:24,413 INFO L85 PathProgramCache]: Analyzing trace with hash 1576257196, now seen corresponding path program 1 times [2023-12-20 02:49:24,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:49:24,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656937313] [2023-12-20 02:49:24,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:49:24,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:49:24,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:49:24,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:49:24,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:49:24,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656937313] [2023-12-20 02:49:24,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656937313] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:49:24,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:49:24,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-20 02:49:24,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7128263] [2023-12-20 02:49:24,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:49:24,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-20 02:49:24,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:49:24,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-20 02:49:24,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-20 02:49:24,774 INFO L87 Difference]: Start difference. First operand 105909 states and 123102 transitions. Second operand has 9 states, 9 states have (on average 18.88888888888889) internal successors, (170), 8 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:49:26,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:49:26,205 INFO L93 Difference]: Finished difference Result 253329 states and 295505 transitions. [2023-12-20 02:49:26,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-20 02:49:26,206 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 18.88888888888889) internal successors, (170), 8 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 170 [2023-12-20 02:49:26,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:49:26,473 INFO L225 Difference]: With dead ends: 253329 [2023-12-20 02:49:26,474 INFO L226 Difference]: Without dead ends: 208977 [2023-12-20 02:49:26,539 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=86, Invalid=256, Unknown=0, NotChecked=0, Total=342 [2023-12-20 02:49:26,540 INFO L413 NwaCegarLoop]: 351 mSDtfsCounter, 1591 mSDsluCounter, 2027 mSDsCounter, 0 mSdLazyCounter, 1475 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1591 SdHoareTripleChecker+Valid, 2378 SdHoareTripleChecker+Invalid, 1478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-20 02:49:26,540 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1591 Valid, 2378 Invalid, 1478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1475 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-20 02:49:26,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208977 states. [2023-12-20 02:49:28,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208977 to 107034. [2023-12-20 02:49:28,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107034 states, 107033 states have (on average 1.1613053917950538) internal successors, (124298), 107033 states have internal predecessors, (124298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:49:28,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107034 states to 107034 states and 124298 transitions. [2023-12-20 02:49:28,344 INFO L78 Accepts]: Start accepts. Automaton has 107034 states and 124298 transitions. Word has length 170 [2023-12-20 02:49:28,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:49:28,344 INFO L495 AbstractCegarLoop]: Abstraction has 107034 states and 124298 transitions. [2023-12-20 02:49:28,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 18.88888888888889) internal successors, (170), 8 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:49:28,344 INFO L276 IsEmpty]: Start isEmpty. Operand 107034 states and 124298 transitions. [2023-12-20 02:49:28,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-12-20 02:49:28,382 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:49:28,382 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:49:28,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2023-12-20 02:49:28,382 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:49:28,382 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:49:28,382 INFO L85 PathProgramCache]: Analyzing trace with hash -1987762722, now seen corresponding path program 1 times [2023-12-20 02:49:28,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:49:28,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300948788] [2023-12-20 02:49:28,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:49:28,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:49:28,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:49:28,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:49:28,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:49:28,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300948788] [2023-12-20 02:49:28,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300948788] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:49:28,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:49:28,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 02:49:28,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237695029] [2023-12-20 02:49:28,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:49:28,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 02:49:28,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:49:28,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 02:49:28,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 02:49:28,454 INFO L87 Difference]: Start difference. First operand 107034 states and 124298 transitions. Second operand has 4 states, 4 states have (on average 43.0) internal successors, (172), 4 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:49:29,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:49:29,411 INFO L93 Difference]: Finished difference Result 275641 states and 321145 transitions. [2023-12-20 02:49:29,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 02:49:29,411 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 43.0) internal successors, (172), 4 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 172 [2023-12-20 02:49:29,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:49:29,640 INFO L225 Difference]: With dead ends: 275641 [2023-12-20 02:49:29,640 INFO L226 Difference]: Without dead ends: 192229 [2023-12-20 02:49:29,709 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 02:49:29,710 INFO L413 NwaCegarLoop]: 479 mSDtfsCounter, 587 mSDsluCounter, 663 mSDsCounter, 0 mSdLazyCounter, 472 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 587 SdHoareTripleChecker+Valid, 1142 SdHoareTripleChecker+Invalid, 480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-20 02:49:29,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [587 Valid, 1142 Invalid, 480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 472 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-20 02:49:29,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192229 states. [2023-12-20 02:49:31,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192229 to 108149. [2023-12-20 02:49:31,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108149 states, 108148 states have (on average 1.1609923438251286) internal successors, (125559), 108148 states have internal predecessors, (125559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:49:31,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108149 states to 108149 states and 125559 transitions. [2023-12-20 02:49:31,559 INFO L78 Accepts]: Start accepts. Automaton has 108149 states and 125559 transitions. Word has length 172 [2023-12-20 02:49:31,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:49:31,559 INFO L495 AbstractCegarLoop]: Abstraction has 108149 states and 125559 transitions. [2023-12-20 02:49:31,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.0) internal successors, (172), 4 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:49:31,560 INFO L276 IsEmpty]: Start isEmpty. Operand 108149 states and 125559 transitions. [2023-12-20 02:49:31,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-12-20 02:49:31,592 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:49:31,592 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:49:31,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2023-12-20 02:49:31,592 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:49:31,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:49:31,593 INFO L85 PathProgramCache]: Analyzing trace with hash -1658211133, now seen corresponding path program 1 times [2023-12-20 02:49:31,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:49:31,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435137013] [2023-12-20 02:49:31,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:49:31,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:49:31,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:49:31,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:49:31,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:49:31,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435137013] [2023-12-20 02:49:31,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435137013] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:49:31,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:49:31,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 02:49:31,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669566067] [2023-12-20 02:49:31,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:49:31,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 02:49:31,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:49:31,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 02:49:31,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 02:49:31,723 INFO L87 Difference]: Start difference. First operand 108149 states and 125559 transitions. Second operand has 4 states, 4 states have (on average 43.0) internal successors, (172), 4 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:49:32,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:49:32,280 INFO L93 Difference]: Finished difference Result 113539 states and 131949 transitions. [2023-12-20 02:49:32,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 02:49:32,280 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 43.0) internal successors, (172), 4 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 172 [2023-12-20 02:49:32,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:49:32,404 INFO L225 Difference]: With dead ends: 113539 [2023-12-20 02:49:32,404 INFO L226 Difference]: Without dead ends: 108149 [2023-12-20 02:49:32,429 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 02:49:32,430 INFO L413 NwaCegarLoop]: 353 mSDtfsCounter, 1 mSDsluCounter, 700 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1053 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 02:49:32,430 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1053 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 02:49:32,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108149 states. [2023-12-20 02:49:33,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108149 to 108149. [2023-12-20 02:49:33,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108149 states, 108148 states have (on average 1.160807412064948) internal successors, (125539), 108148 states have internal predecessors, (125539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:49:33,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108149 states to 108149 states and 125539 transitions. [2023-12-20 02:49:33,897 INFO L78 Accepts]: Start accepts. Automaton has 108149 states and 125539 transitions. Word has length 172 [2023-12-20 02:49:33,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:49:33,897 INFO L495 AbstractCegarLoop]: Abstraction has 108149 states and 125539 transitions. [2023-12-20 02:49:33,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.0) internal successors, (172), 4 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:49:33,898 INFO L276 IsEmpty]: Start isEmpty. Operand 108149 states and 125539 transitions. [2023-12-20 02:49:33,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-12-20 02:49:33,929 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:49:33,929 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:49:33,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2023-12-20 02:49:33,930 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:49:33,930 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:49:33,930 INFO L85 PathProgramCache]: Analyzing trace with hash 2050653760, now seen corresponding path program 1 times [2023-12-20 02:49:33,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:49:33,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313215782] [2023-12-20 02:49:33,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:49:33,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:49:33,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:49:34,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:49:34,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:49:34,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313215782] [2023-12-20 02:49:34,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313215782] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:49:34,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:49:34,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-20 02:49:34,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208644212] [2023-12-20 02:49:34,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:49:34,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-20 02:49:34,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:49:34,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-20 02:49:34,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2023-12-20 02:49:34,708 INFO L87 Difference]: Start difference. First operand 108149 states and 125539 transitions. Second operand has 15 states, 15 states have (on average 11.466666666666667) internal successors, (172), 14 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:49:39,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:49:39,793 INFO L93 Difference]: Finished difference Result 294389 states and 341279 transitions. [2023-12-20 02:49:39,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2023-12-20 02:49:39,794 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 11.466666666666667) internal successors, (172), 14 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 172 [2023-12-20 02:49:39,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:49:40,356 INFO L225 Difference]: With dead ends: 294389 [2023-12-20 02:49:40,356 INFO L226 Difference]: Without dead ends: 273259 [2023-12-20 02:49:40,406 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1689 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1115, Invalid=4435, Unknown=0, NotChecked=0, Total=5550 [2023-12-20 02:49:40,407 INFO L413 NwaCegarLoop]: 700 mSDtfsCounter, 7562 mSDsluCounter, 4439 mSDsCounter, 0 mSdLazyCounter, 3933 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7562 SdHoareTripleChecker+Valid, 5139 SdHoareTripleChecker+Invalid, 3986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 3933 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-20 02:49:40,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7562 Valid, 5139 Invalid, 3986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 3933 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-20 02:49:40,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273259 states. [2023-12-20 02:49:42,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273259 to 103740. [2023-12-20 02:49:42,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103740 states, 103739 states have (on average 1.1613472271758933) internal successors, (120477), 103739 states have internal predecessors, (120477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:49:42,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103740 states to 103740 states and 120477 transitions. [2023-12-20 02:49:42,406 INFO L78 Accepts]: Start accepts. Automaton has 103740 states and 120477 transitions. Word has length 172 [2023-12-20 02:49:42,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:49:42,406 INFO L495 AbstractCegarLoop]: Abstraction has 103740 states and 120477 transitions. [2023-12-20 02:49:42,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 11.466666666666667) internal successors, (172), 14 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:49:42,406 INFO L276 IsEmpty]: Start isEmpty. Operand 103740 states and 120477 transitions. [2023-12-20 02:49:42,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-12-20 02:49:42,434 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:49:42,435 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:49:42,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2023-12-20 02:49:42,435 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:49:42,435 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:49:42,435 INFO L85 PathProgramCache]: Analyzing trace with hash 1427704741, now seen corresponding path program 1 times [2023-12-20 02:49:42,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:49:42,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631191154] [2023-12-20 02:49:42,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:49:42,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:49:42,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:49:42,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:49:42,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:49:42,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631191154] [2023-12-20 02:49:42,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631191154] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:49:42,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:49:42,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-20 02:49:42,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942621169] [2023-12-20 02:49:42,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:49:42,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-20 02:49:42,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:49:42,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-20 02:49:42,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2023-12-20 02:49:42,882 INFO L87 Difference]: Start difference. First operand 103740 states and 120477 transitions. Second operand has 12 states, 12 states have (on average 14.333333333333334) internal successors, (172), 11 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:49:44,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:49:44,470 INFO L93 Difference]: Finished difference Result 238149 states and 278193 transitions. [2023-12-20 02:49:44,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 02:49:44,470 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 14.333333333333334) internal successors, (172), 11 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 172 [2023-12-20 02:49:44,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:49:44,924 INFO L225 Difference]: With dead ends: 238149 [2023-12-20 02:49:44,924 INFO L226 Difference]: Without dead ends: 217519 [2023-12-20 02:49:44,938 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=148, Invalid=404, Unknown=0, NotChecked=0, Total=552 [2023-12-20 02:49:44,938 INFO L413 NwaCegarLoop]: 457 mSDtfsCounter, 2093 mSDsluCounter, 1813 mSDsCounter, 0 mSdLazyCounter, 1572 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2093 SdHoareTripleChecker+Valid, 2270 SdHoareTripleChecker+Invalid, 1599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-20 02:49:44,938 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2093 Valid, 2270 Invalid, 1599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1572 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-20 02:49:45,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217519 states. [2023-12-20 02:49:46,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217519 to 103474. [2023-12-20 02:49:46,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103474 states, 103473 states have (on average 1.161114493636021) internal successors, (120144), 103473 states have internal predecessors, (120144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:49:46,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103474 states to 103474 states and 120144 transitions. [2023-12-20 02:49:46,434 INFO L78 Accepts]: Start accepts. Automaton has 103474 states and 120144 transitions. Word has length 172 [2023-12-20 02:49:46,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:49:46,434 INFO L495 AbstractCegarLoop]: Abstraction has 103474 states and 120144 transitions. [2023-12-20 02:49:46,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 14.333333333333334) internal successors, (172), 11 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:49:46,434 INFO L276 IsEmpty]: Start isEmpty. Operand 103474 states and 120144 transitions. [2023-12-20 02:49:46,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-12-20 02:49:46,463 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:49:46,463 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:49:46,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2023-12-20 02:49:46,464 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:49:46,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:49:46,464 INFO L85 PathProgramCache]: Analyzing trace with hash -177376394, now seen corresponding path program 1 times [2023-12-20 02:49:46,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:49:46,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197838965] [2023-12-20 02:49:46,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:49:46,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:49:46,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:49:47,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:49:47,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:49:47,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197838965] [2023-12-20 02:49:47,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197838965] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:49:47,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:49:47,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-20 02:49:47,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52582603] [2023-12-20 02:49:47,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:49:47,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-20 02:49:47,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:49:47,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-20 02:49:47,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2023-12-20 02:49:47,258 INFO L87 Difference]: Start difference. First operand 103474 states and 120144 transitions. Second operand has 15 states, 15 states have (on average 11.466666666666667) internal successors, (172), 14 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:49:52,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:49:52,598 INFO L93 Difference]: Finished difference Result 274760 states and 320671 transitions. [2023-12-20 02:49:52,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2023-12-20 02:49:52,598 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 11.466666666666667) internal successors, (172), 14 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 172 [2023-12-20 02:49:52,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:49:52,897 INFO L225 Difference]: With dead ends: 274760 [2023-12-20 02:49:52,897 INFO L226 Difference]: Without dead ends: 258078 [2023-12-20 02:49:52,950 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1460 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1000, Invalid=3970, Unknown=0, NotChecked=0, Total=4970 [2023-12-20 02:49:52,951 INFO L413 NwaCegarLoop]: 668 mSDtfsCounter, 5824 mSDsluCounter, 4851 mSDsCounter, 0 mSdLazyCounter, 4395 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5824 SdHoareTripleChecker+Valid, 5519 SdHoareTripleChecker+Invalid, 4436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 4395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-20 02:49:52,951 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5824 Valid, 5519 Invalid, 4436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 4395 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-20 02:49:53,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258078 states. [2023-12-20 02:49:54,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258078 to 101575. [2023-12-20 02:49:54,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101575 states, 101574 states have (on average 1.1623151593911827) internal successors, (118061), 101574 states have internal predecessors, (118061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:49:54,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101575 states to 101575 states and 118061 transitions. [2023-12-20 02:49:54,816 INFO L78 Accepts]: Start accepts. Automaton has 101575 states and 118061 transitions. Word has length 172 [2023-12-20 02:49:54,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:49:54,816 INFO L495 AbstractCegarLoop]: Abstraction has 101575 states and 118061 transitions. [2023-12-20 02:49:54,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 11.466666666666667) internal successors, (172), 14 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:49:54,816 INFO L276 IsEmpty]: Start isEmpty. Operand 101575 states and 118061 transitions. [2023-12-20 02:49:54,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-12-20 02:49:54,842 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:49:54,842 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:49:54,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2023-12-20 02:49:54,842 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:49:54,843 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:49:54,843 INFO L85 PathProgramCache]: Analyzing trace with hash -105693831, now seen corresponding path program 1 times [2023-12-20 02:49:54,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:49:54,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025515372] [2023-12-20 02:49:54,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:49:54,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:49:54,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:49:54,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:49:54,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:49:54,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025515372] [2023-12-20 02:49:54,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025515372] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:49:54,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:49:54,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 02:49:54,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298160508] [2023-12-20 02:49:54,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:49:54,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 02:49:54,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:49:54,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 02:49:54,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 02:49:54,889 INFO L87 Difference]: Start difference. First operand 101575 states and 118061 transitions. Second operand has 4 states, 4 states have (on average 43.0) internal successors, (172), 4 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:49:55,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:49:55,910 INFO L93 Difference]: Finished difference Result 263226 states and 307076 transitions. [2023-12-20 02:49:55,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 02:49:55,910 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 43.0) internal successors, (172), 4 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 172 [2023-12-20 02:49:55,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:49:56,260 INFO L225 Difference]: With dead ends: 263226 [2023-12-20 02:49:56,260 INFO L226 Difference]: Without dead ends: 210382 [2023-12-20 02:49:56,356 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 02:49:56,357 INFO L413 NwaCegarLoop]: 482 mSDtfsCounter, 719 mSDsluCounter, 544 mSDsCounter, 0 mSdLazyCounter, 473 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 719 SdHoareTripleChecker+Valid, 1026 SdHoareTripleChecker+Invalid, 480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 473 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-20 02:49:56,357 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [719 Valid, 1026 Invalid, 480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 473 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-20 02:49:56,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210382 states. [2023-12-20 02:49:57,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210382 to 120868. [2023-12-20 02:49:57,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120868 states, 120867 states have (on average 1.160664201146715) internal successors, (140286), 120867 states have internal predecessors, (140286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:49:58,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120868 states to 120868 states and 140286 transitions. [2023-12-20 02:49:58,244 INFO L78 Accepts]: Start accepts. Automaton has 120868 states and 140286 transitions. Word has length 172 [2023-12-20 02:49:58,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:49:58,245 INFO L495 AbstractCegarLoop]: Abstraction has 120868 states and 140286 transitions. [2023-12-20 02:49:58,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.0) internal successors, (172), 4 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:49:58,245 INFO L276 IsEmpty]: Start isEmpty. Operand 120868 states and 140286 transitions. [2023-12-20 02:49:58,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-12-20 02:49:58,273 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:49:58,273 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:49:58,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2023-12-20 02:49:58,273 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:49:58,274 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:49:58,274 INFO L85 PathProgramCache]: Analyzing trace with hash -1254381026, now seen corresponding path program 1 times [2023-12-20 02:49:58,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:49:58,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425421203] [2023-12-20 02:49:58,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:49:58,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:49:58,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:49:58,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:49:58,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:49:58,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425421203] [2023-12-20 02:49:58,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425421203] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:49:58,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:49:58,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 02:49:58,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063330056] [2023-12-20 02:49:58,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:49:58,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 02:49:58,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:49:58,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 02:49:58,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 02:49:58,390 INFO L87 Difference]: Start difference. First operand 120868 states and 140286 transitions. Second operand has 4 states, 4 states have (on average 43.0) internal successors, (172), 4 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:49:58,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:49:58,662 INFO L93 Difference]: Finished difference Result 137686 states and 160366 transitions. [2023-12-20 02:49:58,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-20 02:49:58,662 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 43.0) internal successors, (172), 4 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 172 [2023-12-20 02:49:58,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:49:59,050 INFO L225 Difference]: With dead ends: 137686 [2023-12-20 02:49:59,050 INFO L226 Difference]: Without dead ends: 120868 [2023-12-20 02:49:59,059 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 02:49:59,059 INFO L413 NwaCegarLoop]: 350 mSDtfsCounter, 1 mSDsluCounter, 694 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1044 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 02:49:59,060 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1044 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 02:49:59,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120868 states. [2023-12-20 02:50:00,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120868 to 120868. [2023-12-20 02:50:00,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120868 states, 120867 states have (on average 1.160200881961164) internal successors, (140230), 120867 states have internal predecessors, (140230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:50:00,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120868 states to 120868 states and 140230 transitions. [2023-12-20 02:50:00,556 INFO L78 Accepts]: Start accepts. Automaton has 120868 states and 140230 transitions. Word has length 172 [2023-12-20 02:50:00,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:50:00,557 INFO L495 AbstractCegarLoop]: Abstraction has 120868 states and 140230 transitions. [2023-12-20 02:50:00,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.0) internal successors, (172), 4 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:50:00,557 INFO L276 IsEmpty]: Start isEmpty. Operand 120868 states and 140230 transitions. [2023-12-20 02:50:00,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2023-12-20 02:50:00,586 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:50:00,586 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:50:00,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2023-12-20 02:50:00,587 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:50:00,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:50:00,587 INFO L85 PathProgramCache]: Analyzing trace with hash -1187255174, now seen corresponding path program 1 times [2023-12-20 02:50:00,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:50:00,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620355714] [2023-12-20 02:50:00,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:50:00,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:50:00,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:50:00,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:50:00,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:50:00,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620355714] [2023-12-20 02:50:00,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620355714] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:50:00,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:50:00,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 02:50:00,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058420509] [2023-12-20 02:50:00,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:50:00,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 02:50:00,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:50:00,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 02:50:00,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-20 02:50:00,710 INFO L87 Difference]: Start difference. First operand 120868 states and 140230 transitions. Second operand has 6 states, 6 states have (on average 28.833333333333332) internal successors, (173), 6 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:50:01,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:50:01,061 INFO L93 Difference]: Finished difference Result 139056 states and 162087 transitions. [2023-12-20 02:50:01,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 02:50:01,061 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 28.833333333333332) internal successors, (173), 6 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 173 [2023-12-20 02:50:01,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:50:01,224 INFO L225 Difference]: With dead ends: 139056 [2023-12-20 02:50:01,225 INFO L226 Difference]: Without dead ends: 131942 [2023-12-20 02:50:01,261 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2023-12-20 02:50:01,261 INFO L413 NwaCegarLoop]: 689 mSDtfsCounter, 1111 mSDsluCounter, 1091 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1111 SdHoareTripleChecker+Valid, 1780 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 02:50:01,262 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1111 Valid, 1780 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 02:50:01,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131942 states. [2023-12-20 02:50:02,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131942 to 128912. [2023-12-20 02:50:02,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128912 states, 128911 states have (on average 1.1622437185344927) internal successors, (149826), 128911 states have internal predecessors, (149826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:50:02,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128912 states to 128912 states and 149826 transitions. [2023-12-20 02:50:02,923 INFO L78 Accepts]: Start accepts. Automaton has 128912 states and 149826 transitions. Word has length 173 [2023-12-20 02:50:02,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:50:02,923 INFO L495 AbstractCegarLoop]: Abstraction has 128912 states and 149826 transitions. [2023-12-20 02:50:02,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.833333333333332) internal successors, (173), 6 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:50:02,923 INFO L276 IsEmpty]: Start isEmpty. Operand 128912 states and 149826 transitions. [2023-12-20 02:50:02,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2023-12-20 02:50:02,950 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:50:02,950 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:50:02,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2023-12-20 02:50:02,950 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:50:02,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:50:02,951 INFO L85 PathProgramCache]: Analyzing trace with hash 691149351, now seen corresponding path program 1 times [2023-12-20 02:50:02,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:50:02,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417785873] [2023-12-20 02:50:02,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:50:02,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:50:02,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:50:03,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:50:03,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:50:03,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417785873] [2023-12-20 02:50:03,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417785873] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:50:03,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:50:03,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 02:50:03,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864173899] [2023-12-20 02:50:03,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:50:03,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 02:50:03,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:50:03,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 02:50:03,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-20 02:50:03,117 INFO L87 Difference]: Start difference. First operand 128912 states and 149826 transitions. Second operand has 6 states, 6 states have (on average 28.833333333333332) internal successors, (173), 6 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:50:03,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:50:03,702 INFO L93 Difference]: Finished difference Result 146687 states and 171335 transitions. [2023-12-20 02:50:03,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 02:50:03,704 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 28.833333333333332) internal successors, (173), 6 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 173 [2023-12-20 02:50:03,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:50:03,851 INFO L225 Difference]: With dead ends: 146687 [2023-12-20 02:50:03,852 INFO L226 Difference]: Without dead ends: 138797 [2023-12-20 02:50:03,874 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2023-12-20 02:50:03,880 INFO L413 NwaCegarLoop]: 647 mSDtfsCounter, 1086 mSDsluCounter, 759 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1086 SdHoareTripleChecker+Valid, 1406 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 02:50:03,887 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1086 Valid, 1406 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 02:50:03,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138797 states. [2023-12-20 02:50:05,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138797 to 133795. [2023-12-20 02:50:05,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133795 states, 133794 states have (on average 1.1641329207587785) internal successors, (155754), 133794 states have internal predecessors, (155754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:50:05,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133795 states to 133795 states and 155754 transitions. [2023-12-20 02:50:05,409 INFO L78 Accepts]: Start accepts. Automaton has 133795 states and 155754 transitions. Word has length 173 [2023-12-20 02:50:05,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:50:05,409 INFO L495 AbstractCegarLoop]: Abstraction has 133795 states and 155754 transitions. [2023-12-20 02:50:05,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.833333333333332) internal successors, (173), 6 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:50:05,410 INFO L276 IsEmpty]: Start isEmpty. Operand 133795 states and 155754 transitions. [2023-12-20 02:50:05,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2023-12-20 02:50:05,443 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:50:05,443 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:50:05,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2023-12-20 02:50:05,443 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:50:05,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:50:05,443 INFO L85 PathProgramCache]: Analyzing trace with hash -9277939, now seen corresponding path program 1 times [2023-12-20 02:50:05,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:50:05,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704450174] [2023-12-20 02:50:05,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:50:05,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:50:05,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:50:05,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:50:05,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:50:05,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704450174] [2023-12-20 02:50:05,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704450174] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:50:05,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:50:05,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 02:50:05,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402204377] [2023-12-20 02:50:05,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:50:05,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 02:50:05,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:50:05,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 02:50:05,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-20 02:50:05,849 INFO L87 Difference]: Start difference. First operand 133795 states and 155754 transitions. Second operand has 6 states, 6 states have (on average 28.833333333333332) internal successors, (173), 6 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:50:06,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:50:06,239 INFO L93 Difference]: Finished difference Result 156248 states and 182875 transitions. [2023-12-20 02:50:06,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 02:50:06,239 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 28.833333333333332) internal successors, (173), 6 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 173 [2023-12-20 02:50:06,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:50:06,399 INFO L225 Difference]: With dead ends: 156248 [2023-12-20 02:50:06,399 INFO L226 Difference]: Without dead ends: 148139 [2023-12-20 02:50:06,440 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2023-12-20 02:50:06,441 INFO L413 NwaCegarLoop]: 681 mSDtfsCounter, 1113 mSDsluCounter, 791 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1113 SdHoareTripleChecker+Valid, 1472 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 02:50:06,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1113 Valid, 1472 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 02:50:06,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148139 states. [2023-12-20 02:50:07,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148139 to 136308. [2023-12-20 02:50:08,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136308 states, 136307 states have (on average 1.1645330027071243) internal successors, (158734), 136307 states have internal predecessors, (158734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:50:08,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136308 states to 136308 states and 158734 transitions. [2023-12-20 02:50:08,422 INFO L78 Accepts]: Start accepts. Automaton has 136308 states and 158734 transitions. Word has length 173 [2023-12-20 02:50:08,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:50:08,423 INFO L495 AbstractCegarLoop]: Abstraction has 136308 states and 158734 transitions. [2023-12-20 02:50:08,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.833333333333332) internal successors, (173), 6 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:50:08,423 INFO L276 IsEmpty]: Start isEmpty. Operand 136308 states and 158734 transitions. [2023-12-20 02:50:08,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2023-12-20 02:50:08,453 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:50:08,453 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:50:08,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2023-12-20 02:50:08,453 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:50:08,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:50:08,454 INFO L85 PathProgramCache]: Analyzing trace with hash 138415593, now seen corresponding path program 1 times [2023-12-20 02:50:08,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:50:08,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582271217] [2023-12-20 02:50:08,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:50:08,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:50:08,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:50:08,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:50:08,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:50:08,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582271217] [2023-12-20 02:50:08,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582271217] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:50:08,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:50:08,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 02:50:08,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104926080] [2023-12-20 02:50:08,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:50:08,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 02:50:08,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:50:08,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 02:50:08,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 02:50:08,499 INFO L87 Difference]: Start difference. First operand 136308 states and 158734 transitions. Second operand has 4 states, 4 states have (on average 43.25) internal successors, (173), 4 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:50:09,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:50:09,629 INFO L93 Difference]: Finished difference Result 304131 states and 353727 transitions. [2023-12-20 02:50:09,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 02:50:09,630 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 43.25) internal successors, (173), 4 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 173 [2023-12-20 02:50:09,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:50:09,958 INFO L225 Difference]: With dead ends: 304131 [2023-12-20 02:50:09,959 INFO L226 Difference]: Without dead ends: 224229 [2023-12-20 02:50:10,058 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 02:50:10,058 INFO L413 NwaCegarLoop]: 518 mSDtfsCounter, 664 mSDsluCounter, 582 mSDsCounter, 0 mSdLazyCounter, 489 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 664 SdHoareTripleChecker+Valid, 1100 SdHoareTripleChecker+Invalid, 496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 489 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-20 02:50:10,058 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [664 Valid, 1100 Invalid, 496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 489 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-20 02:50:10,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224229 states. [2023-12-20 02:50:11,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224229 to 133264. [2023-12-20 02:50:11,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133264 states, 133263 states have (on average 1.1645618063528511) internal successors, (155193), 133263 states have internal predecessors, (155193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:50:12,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133264 states to 133264 states and 155193 transitions. [2023-12-20 02:50:12,005 INFO L78 Accepts]: Start accepts. Automaton has 133264 states and 155193 transitions. Word has length 173 [2023-12-20 02:50:12,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:50:12,005 INFO L495 AbstractCegarLoop]: Abstraction has 133264 states and 155193 transitions. [2023-12-20 02:50:12,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.25) internal successors, (173), 4 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:50:12,005 INFO L276 IsEmpty]: Start isEmpty. Operand 133264 states and 155193 transitions. [2023-12-20 02:50:12,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2023-12-20 02:50:12,033 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:50:12,033 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:50:12,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2023-12-20 02:50:12,033 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:50:12,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:50:12,034 INFO L85 PathProgramCache]: Analyzing trace with hash 824074468, now seen corresponding path program 1 times [2023-12-20 02:50:12,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:50:12,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537929355] [2023-12-20 02:50:12,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:50:12,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:50:12,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:50:12,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:50:12,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:50:12,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537929355] [2023-12-20 02:50:12,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537929355] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:50:12,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:50:12,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 02:50:12,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172960568] [2023-12-20 02:50:12,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:50:12,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 02:50:12,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:50:12,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 02:50:12,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-20 02:50:12,377 INFO L87 Difference]: Start difference. First operand 133264 states and 155193 transitions. Second operand has 6 states, 6 states have (on average 28.833333333333332) internal successors, (173), 6 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:50:12,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:50:12,752 INFO L93 Difference]: Finished difference Result 154340 states and 180621 transitions. [2023-12-20 02:50:12,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 02:50:12,752 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 28.833333333333332) internal successors, (173), 6 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 173 [2023-12-20 02:50:12,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:50:12,910 INFO L225 Difference]: With dead ends: 154340 [2023-12-20 02:50:12,910 INFO L226 Difference]: Without dead ends: 147157 [2023-12-20 02:50:12,955 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2023-12-20 02:50:12,957 INFO L413 NwaCegarLoop]: 655 mSDtfsCounter, 1075 mSDsluCounter, 775 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1075 SdHoareTripleChecker+Valid, 1430 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 02:50:12,957 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1075 Valid, 1430 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 02:50:13,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147157 states. [2023-12-20 02:50:14,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147157 to 138933. [2023-12-20 02:50:14,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138933 states, 138932 states have (on average 1.1661964126335185) internal successors, (162022), 138932 states have internal predecessors, (162022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:50:14,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138933 states to 138933 states and 162022 transitions. [2023-12-20 02:50:14,693 INFO L78 Accepts]: Start accepts. Automaton has 138933 states and 162022 transitions. Word has length 173 [2023-12-20 02:50:14,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:50:14,694 INFO L495 AbstractCegarLoop]: Abstraction has 138933 states and 162022 transitions. [2023-12-20 02:50:14,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.833333333333332) internal successors, (173), 6 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:50:14,694 INFO L276 IsEmpty]: Start isEmpty. Operand 138933 states and 162022 transitions. [2023-12-20 02:50:14,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2023-12-20 02:50:14,721 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:50:14,722 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:50:14,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2023-12-20 02:50:14,722 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:50:14,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:50:14,722 INFO L85 PathProgramCache]: Analyzing trace with hash 872306977, now seen corresponding path program 1 times [2023-12-20 02:50:14,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:50:14,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076843832] [2023-12-20 02:50:14,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:50:14,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:50:14,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:50:14,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:50:14,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:50:14,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076843832] [2023-12-20 02:50:14,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076843832] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:50:14,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:50:14,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 02:50:14,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2807561] [2023-12-20 02:50:14,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:50:14,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 02:50:14,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:50:14,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 02:50:14,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-20 02:50:14,836 INFO L87 Difference]: Start difference. First operand 138933 states and 162022 transitions. Second operand has 6 states, 6 states have (on average 29.0) internal successors, (174), 6 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:50:15,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:50:15,497 INFO L93 Difference]: Finished difference Result 167552 states and 196624 transitions. [2023-12-20 02:50:15,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 02:50:15,498 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 29.0) internal successors, (174), 6 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 174 [2023-12-20 02:50:15,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:50:15,656 INFO L225 Difference]: With dead ends: 167552 [2023-12-20 02:50:15,656 INFO L226 Difference]: Without dead ends: 155353 [2023-12-20 02:50:15,678 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2023-12-20 02:50:15,679 INFO L413 NwaCegarLoop]: 699 mSDtfsCounter, 1173 mSDsluCounter, 762 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1173 SdHoareTripleChecker+Valid, 1461 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 02:50:15,679 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1173 Valid, 1461 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 02:50:15,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155353 states. [2023-12-20 02:50:16,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155353 to 147273. [2023-12-20 02:50:17,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147273 states, 147272 states have (on average 1.1681786082894237) internal successors, (172040), 147272 states have internal predecessors, (172040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:50:17,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147273 states to 147273 states and 172040 transitions. [2023-12-20 02:50:17,449 INFO L78 Accepts]: Start accepts. Automaton has 147273 states and 172040 transitions. Word has length 174 [2023-12-20 02:50:17,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:50:17,449 INFO L495 AbstractCegarLoop]: Abstraction has 147273 states and 172040 transitions. [2023-12-20 02:50:17,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.0) internal successors, (174), 6 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:50:17,449 INFO L276 IsEmpty]: Start isEmpty. Operand 147273 states and 172040 transitions. [2023-12-20 02:50:17,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2023-12-20 02:50:17,476 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:50:17,476 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:50:17,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2023-12-20 02:50:17,476 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:50:17,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:50:17,477 INFO L85 PathProgramCache]: Analyzing trace with hash -1492611802, now seen corresponding path program 1 times [2023-12-20 02:50:17,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:50:17,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800833986] [2023-12-20 02:50:17,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:50:17,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:50:17,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:50:17,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:50:17,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:50:17,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800833986] [2023-12-20 02:50:17,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800833986] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:50:17,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:50:17,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 02:50:17,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242220310] [2023-12-20 02:50:17,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:50:17,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 02:50:17,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:50:17,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 02:50:17,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 02:50:17,523 INFO L87 Difference]: Start difference. First operand 147273 states and 172040 transitions. Second operand has 4 states, 4 states have (on average 43.5) internal successors, (174), 4 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:50:18,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:50:18,931 INFO L93 Difference]: Finished difference Result 488136 states and 572388 transitions. [2023-12-20 02:50:18,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 02:50:18,931 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 43.5) internal successors, (174), 4 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 174 [2023-12-20 02:50:18,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:50:19,399 INFO L225 Difference]: With dead ends: 488136 [2023-12-20 02:50:19,399 INFO L226 Difference]: Without dead ends: 347954 [2023-12-20 02:50:19,856 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 02:50:19,872 INFO L413 NwaCegarLoop]: 484 mSDtfsCounter, 705 mSDsluCounter, 552 mSDsCounter, 0 mSdLazyCounter, 506 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 705 SdHoareTripleChecker+Valid, 1036 SdHoareTripleChecker+Invalid, 517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-20 02:50:19,872 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [705 Valid, 1036 Invalid, 517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 506 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-20 02:50:20,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347954 states. [2023-12-20 02:50:21,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347954 to 162091. [2023-12-20 02:50:22,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162091 states, 162090 states have (on average 1.1667838854957122) internal successors, (189124), 162090 states have internal predecessors, (189124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:50:22,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162091 states to 162091 states and 189124 transitions. [2023-12-20 02:50:22,581 INFO L78 Accepts]: Start accepts. Automaton has 162091 states and 189124 transitions. Word has length 174 [2023-12-20 02:50:22,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:50:22,581 INFO L495 AbstractCegarLoop]: Abstraction has 162091 states and 189124 transitions. [2023-12-20 02:50:22,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.5) internal successors, (174), 4 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:50:22,581 INFO L276 IsEmpty]: Start isEmpty. Operand 162091 states and 189124 transitions. [2023-12-20 02:50:22,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2023-12-20 02:50:22,682 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:50:22,682 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:50:22,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2023-12-20 02:50:22,683 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:50:22,683 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:50:22,683 INFO L85 PathProgramCache]: Analyzing trace with hash 182854854, now seen corresponding path program 1 times [2023-12-20 02:50:22,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:50:22,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442805589] [2023-12-20 02:50:22,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:50:22,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:50:22,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:50:22,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:50:22,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:50:22,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442805589] [2023-12-20 02:50:22,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442805589] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:50:22,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:50:22,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 02:50:22,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3630906] [2023-12-20 02:50:22,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:50:22,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 02:50:22,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:50:22,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 02:50:22,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-20 02:50:22,793 INFO L87 Difference]: Start difference. First operand 162091 states and 189124 transitions. Second operand has 6 states, 6 states have (on average 29.0) internal successors, (174), 6 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:50:23,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:50:23,376 INFO L93 Difference]: Finished difference Result 191432 states and 224647 transitions. [2023-12-20 02:50:23,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 02:50:23,377 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 29.0) internal successors, (174), 6 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 174 [2023-12-20 02:50:23,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:50:23,586 INFO L225 Difference]: With dead ends: 191432 [2023-12-20 02:50:23,586 INFO L226 Difference]: Without dead ends: 171783 [2023-12-20 02:50:23,630 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2023-12-20 02:50:23,635 INFO L413 NwaCegarLoop]: 674 mSDtfsCounter, 1074 mSDsluCounter, 746 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1074 SdHoareTripleChecker+Valid, 1420 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 02:50:23,635 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1074 Valid, 1420 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 02:50:23,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171783 states. [2023-12-20 02:50:25,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171783 to 157741. [2023-12-20 02:50:25,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157741 states, 157740 states have (on average 1.1662482566248256) internal successors, (183964), 157740 states have internal predecessors, (183964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:50:25,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157741 states to 157741 states and 183964 transitions. [2023-12-20 02:50:25,596 INFO L78 Accepts]: Start accepts. Automaton has 157741 states and 183964 transitions. Word has length 174 [2023-12-20 02:50:25,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:50:25,597 INFO L495 AbstractCegarLoop]: Abstraction has 157741 states and 183964 transitions. [2023-12-20 02:50:25,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.0) internal successors, (174), 6 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:50:25,597 INFO L276 IsEmpty]: Start isEmpty. Operand 157741 states and 183964 transitions. [2023-12-20 02:50:25,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2023-12-20 02:50:25,624 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:50:25,625 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:50:25,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2023-12-20 02:50:25,625 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:50:25,625 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:50:25,625 INFO L85 PathProgramCache]: Analyzing trace with hash 193836985, now seen corresponding path program 1 times [2023-12-20 02:50:25,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:50:25,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669986866] [2023-12-20 02:50:25,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:50:25,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:50:25,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:50:25,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:50:25,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:50:25,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669986866] [2023-12-20 02:50:25,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669986866] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:50:25,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:50:25,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 02:50:25,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086978263] [2023-12-20 02:50:25,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:50:25,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 02:50:25,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:50:25,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 02:50:25,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-20 02:50:25,720 INFO L87 Difference]: Start difference. First operand 157741 states and 183964 transitions. Second operand has 6 states, 6 states have (on average 29.0) internal successors, (174), 6 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:50:26,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:50:26,385 INFO L93 Difference]: Finished difference Result 189563 states and 222628 transitions. [2023-12-20 02:50:26,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 02:50:26,385 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 29.0) internal successors, (174), 6 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 174 [2023-12-20 02:50:26,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:50:26,587 INFO L225 Difference]: With dead ends: 189563 [2023-12-20 02:50:26,587 INFO L226 Difference]: Without dead ends: 171136 [2023-12-20 02:50:26,632 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2023-12-20 02:50:26,632 INFO L413 NwaCegarLoop]: 656 mSDtfsCounter, 1125 mSDsluCounter, 1067 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1125 SdHoareTripleChecker+Valid, 1723 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 02:50:26,633 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1125 Valid, 1723 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 02:50:26,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171136 states. [2023-12-20 02:50:28,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171136 to 160633. [2023-12-20 02:50:28,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160633 states, 160632 states have (on average 1.1670899945216395) internal successors, (187472), 160632 states have internal predecessors, (187472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:50:28,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160633 states to 160633 states and 187472 transitions. [2023-12-20 02:50:28,573 INFO L78 Accepts]: Start accepts. Automaton has 160633 states and 187472 transitions. Word has length 174 [2023-12-20 02:50:28,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:50:28,574 INFO L495 AbstractCegarLoop]: Abstraction has 160633 states and 187472 transitions. [2023-12-20 02:50:28,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.0) internal successors, (174), 6 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:50:28,575 INFO L276 IsEmpty]: Start isEmpty. Operand 160633 states and 187472 transitions. [2023-12-20 02:50:28,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2023-12-20 02:50:28,602 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:50:28,603 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:50:28,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2023-12-20 02:50:28,603 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:50:28,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:50:28,603 INFO L85 PathProgramCache]: Analyzing trace with hash 836599113, now seen corresponding path program 1 times [2023-12-20 02:50:28,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:50:28,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849927717] [2023-12-20 02:50:28,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:50:28,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:50:28,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:50:28,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:50:28,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:50:28,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849927717] [2023-12-20 02:50:28,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849927717] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:50:28,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:50:28,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 02:50:28,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712188158] [2023-12-20 02:50:28,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:50:28,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 02:50:28,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:50:28,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 02:50:28,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-20 02:50:28,776 INFO L87 Difference]: Start difference. First operand 160633 states and 187472 transitions. Second operand has 6 states, 6 states have (on average 29.0) internal successors, (174), 6 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:50:29,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:50:29,533 INFO L93 Difference]: Finished difference Result 194401 states and 228548 transitions. [2023-12-20 02:50:29,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 02:50:29,534 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 29.0) internal successors, (174), 6 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 174 [2023-12-20 02:50:29,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:50:29,724 INFO L225 Difference]: With dead ends: 194401 [2023-12-20 02:50:29,724 INFO L226 Difference]: Without dead ends: 169919 [2023-12-20 02:50:29,777 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2023-12-20 02:50:29,777 INFO L413 NwaCegarLoop]: 635 mSDtfsCounter, 1123 mSDsluCounter, 745 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1123 SdHoareTripleChecker+Valid, 1380 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-20 02:50:29,777 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1123 Valid, 1380 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-20 02:50:29,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169919 states. [2023-12-20 02:50:31,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169919 to 154825. [2023-12-20 02:50:31,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154825 states, 154824 states have (on average 1.1654782204309408) internal successors, (180444), 154824 states have internal predecessors, (180444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:50:31,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154825 states to 154825 states and 180444 transitions. [2023-12-20 02:50:31,717 INFO L78 Accepts]: Start accepts. Automaton has 154825 states and 180444 transitions. Word has length 174 [2023-12-20 02:50:31,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:50:31,717 INFO L495 AbstractCegarLoop]: Abstraction has 154825 states and 180444 transitions. [2023-12-20 02:50:31,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.0) internal successors, (174), 6 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:50:31,717 INFO L276 IsEmpty]: Start isEmpty. Operand 154825 states and 180444 transitions. [2023-12-20 02:50:31,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2023-12-20 02:50:31,743 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:50:31,743 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:50:31,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2023-12-20 02:50:31,743 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:50:31,744 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:50:31,744 INFO L85 PathProgramCache]: Analyzing trace with hash 902129151, now seen corresponding path program 1 times [2023-12-20 02:50:31,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:50:31,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108727357] [2023-12-20 02:50:31,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:50:31,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:50:31,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:50:32,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:50:32,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:50:32,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108727357] [2023-12-20 02:50:32,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108727357] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:50:32,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:50:32,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 02:50:32,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093872012] [2023-12-20 02:50:32,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:50:32,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 02:50:32,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:50:32,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 02:50:32,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-20 02:50:32,105 INFO L87 Difference]: Start difference. First operand 154825 states and 180444 transitions. Second operand has 6 states, 6 states have (on average 29.0) internal successors, (174), 6 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:50:32,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:50:32,558 INFO L93 Difference]: Finished difference Result 182521 states and 214051 transitions. [2023-12-20 02:50:32,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 02:50:32,558 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 29.0) internal successors, (174), 6 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 174 [2023-12-20 02:50:32,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:50:32,740 INFO L225 Difference]: With dead ends: 182521 [2023-12-20 02:50:32,740 INFO L226 Difference]: Without dead ends: 162847 [2023-12-20 02:50:32,795 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2023-12-20 02:50:32,795 INFO L413 NwaCegarLoop]: 652 mSDtfsCounter, 1064 mSDsluCounter, 1081 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1064 SdHoareTripleChecker+Valid, 1733 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 02:50:32,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1064 Valid, 1733 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 02:50:32,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162847 states. [2023-12-20 02:50:34,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162847 to 151805. [2023-12-20 02:50:34,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151805 states, 151804 states have (on average 1.1650220020552817) internal successors, (176855), 151804 states have internal predecessors, (176855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:50:34,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151805 states to 151805 states and 176855 transitions. [2023-12-20 02:50:34,644 INFO L78 Accepts]: Start accepts. Automaton has 151805 states and 176855 transitions. Word has length 174 [2023-12-20 02:50:34,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:50:34,646 INFO L495 AbstractCegarLoop]: Abstraction has 151805 states and 176855 transitions. [2023-12-20 02:50:34,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.0) internal successors, (174), 6 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:50:34,646 INFO L276 IsEmpty]: Start isEmpty. Operand 151805 states and 176855 transitions. [2023-12-20 02:50:34,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2023-12-20 02:50:34,673 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:50:34,673 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:50:34,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2023-12-20 02:50:34,673 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:50:34,673 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:50:34,673 INFO L85 PathProgramCache]: Analyzing trace with hash 1736172795, now seen corresponding path program 1 times [2023-12-20 02:50:34,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:50:34,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580806028] [2023-12-20 02:50:34,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:50:34,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:50:34,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:50:34,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:50:34,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:50:34,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580806028] [2023-12-20 02:50:34,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580806028] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:50:34,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:50:34,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 02:50:34,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315598979] [2023-12-20 02:50:34,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:50:34,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 02:50:34,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:50:34,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 02:50:34,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-20 02:50:34,771 INFO L87 Difference]: Start difference. First operand 151805 states and 176855 transitions. Second operand has 6 states, 6 states have (on average 29.166666666666668) internal successors, (175), 6 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:50:35,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:50:35,455 INFO L93 Difference]: Finished difference Result 182602 states and 214261 transitions. [2023-12-20 02:50:35,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 02:50:35,456 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 29.166666666666668) internal successors, (175), 6 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 175 [2023-12-20 02:50:35,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:50:35,638 INFO L225 Difference]: With dead ends: 182602 [2023-12-20 02:50:35,639 INFO L226 Difference]: Without dead ends: 162222 [2023-12-20 02:50:35,686 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2023-12-20 02:50:35,687 INFO L413 NwaCegarLoop]: 651 mSDtfsCounter, 1061 mSDsluCounter, 1056 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1061 SdHoareTripleChecker+Valid, 1707 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-20 02:50:35,687 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1061 Valid, 1707 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-20 02:50:35,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162222 states. [2023-12-20 02:50:37,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162222 to 147249. [2023-12-20 02:50:37,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147249 states, 147248 states have (on average 1.1638867760512877) internal successors, (171380), 147248 states have internal predecessors, (171380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:50:37,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147249 states to 147249 states and 171380 transitions. [2023-12-20 02:50:37,757 INFO L78 Accepts]: Start accepts. Automaton has 147249 states and 171380 transitions. Word has length 175 [2023-12-20 02:50:37,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:50:37,757 INFO L495 AbstractCegarLoop]: Abstraction has 147249 states and 171380 transitions. [2023-12-20 02:50:37,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.166666666666668) internal successors, (175), 6 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:50:37,758 INFO L276 IsEmpty]: Start isEmpty. Operand 147249 states and 171380 transitions. [2023-12-20 02:50:37,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2023-12-20 02:50:37,783 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:50:37,784 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:50:37,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2023-12-20 02:50:37,784 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:50:37,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:50:37,784 INFO L85 PathProgramCache]: Analyzing trace with hash 1873278339, now seen corresponding path program 1 times [2023-12-20 02:50:37,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:50:37,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099033888] [2023-12-20 02:50:37,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:50:37,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:50:37,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:50:37,960 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:50:37,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:50:37,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099033888] [2023-12-20 02:50:37,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099033888] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 02:50:37,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1189664644] [2023-12-20 02:50:37,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:50:37,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 02:50:37,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 02:50:38,010 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 02:50:38,015 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-20 02:50:38,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:50:38,186 INFO L262 TraceCheckSpWp]: Trace formula consists of 660 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-20 02:50:38,194 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 02:50:39,279 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:50:39,279 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 02:50:40,756 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:50:40,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1189664644] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 02:50:40,756 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 02:50:40,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 13, 14] total 32 [2023-12-20 02:50:40,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717735631] [2023-12-20 02:50:40,757 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 02:50:40,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-12-20 02:50:40,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:50:40,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-12-20 02:50:40,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=924, Unknown=0, NotChecked=0, Total=1056 [2023-12-20 02:50:40,774 INFO L87 Difference]: Start difference. First operand 147249 states and 171380 transitions. Second operand has 33 states, 33 states have (on average 14.969696969696969) internal successors, (494), 32 states have internal predecessors, (494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:50:53,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:50:53,647 INFO L93 Difference]: Finished difference Result 841881 states and 987857 transitions. [2023-12-20 02:50:53,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 145 states. [2023-12-20 02:50:53,647 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 14.969696969696969) internal successors, (494), 32 states have internal predecessors, (494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2023-12-20 02:50:53,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:50:55,658 INFO L225 Difference]: With dead ends: 841881 [2023-12-20 02:50:55,659 INFO L226 Difference]: Without dead ends: 776129 [2023-12-20 02:50:55,800 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 503 GetRequests, 328 SyntacticMatches, 1 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11134 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=5294, Invalid=25506, Unknown=0, NotChecked=0, Total=30800 [2023-12-20 02:50:55,800 INFO L413 NwaCegarLoop]: 491 mSDtfsCounter, 8397 mSDsluCounter, 10608 mSDsCounter, 0 mSdLazyCounter, 8749 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8397 SdHoareTripleChecker+Valid, 11099 SdHoareTripleChecker+Invalid, 8854 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 8749 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2023-12-20 02:50:55,807 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8397 Valid, 11099 Invalid, 8854 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [105 Valid, 8749 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2023-12-20 02:50:56,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 776129 states. [2023-12-20 02:50:59,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 776129 to 171034. [2023-12-20 02:51:00,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171034 states, 171033 states have (on average 1.1621616880952799) internal successors, (198768), 171033 states have internal predecessors, (198768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:51:00,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171034 states to 171034 states and 198768 transitions. [2023-12-20 02:51:00,286 INFO L78 Accepts]: Start accepts. Automaton has 171034 states and 198768 transitions. Word has length 177 [2023-12-20 02:51:00,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:51:00,286 INFO L495 AbstractCegarLoop]: Abstraction has 171034 states and 198768 transitions. [2023-12-20 02:51:00,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 14.969696969696969) internal successors, (494), 32 states have internal predecessors, (494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:51:00,287 INFO L276 IsEmpty]: Start isEmpty. Operand 171034 states and 198768 transitions. [2023-12-20 02:51:00,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2023-12-20 02:51:00,317 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:51:00,318 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:51:00,325 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-20 02:51:00,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 02:51:00,525 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:51:00,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:51:00,526 INFO L85 PathProgramCache]: Analyzing trace with hash -381377853, now seen corresponding path program 1 times [2023-12-20 02:51:00,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:51:00,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921250026] [2023-12-20 02:51:00,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:51:00,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:51:00,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:51:01,249 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-20 02:51:01,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:51:01,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921250026] [2023-12-20 02:51:01,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921250026] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 02:51:01,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1967189639] [2023-12-20 02:51:01,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:51:01,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 02:51:01,250 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 02:51:01,259 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 02:51:01,296 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-20 02:51:01,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:51:01,446 INFO L262 TraceCheckSpWp]: Trace formula consists of 660 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-20 02:51:01,450 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 02:51:02,506 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:51:02,506 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 02:51:03,858 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:51:03,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1967189639] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 02:51:03,858 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 02:51:03,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 13, 14] total 30 [2023-12-20 02:51:03,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305256017] [2023-12-20 02:51:03,859 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 02:51:03,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-12-20 02:51:03,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:51:03,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-12-20 02:51:03,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=760, Unknown=0, NotChecked=0, Total=870 [2023-12-20 02:51:03,860 INFO L87 Difference]: Start difference. First operand 171034 states and 198768 transitions. Second operand has 30 states, 30 states have (on average 16.8) internal successors, (504), 30 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:51:17,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:51:17,028 INFO L93 Difference]: Finished difference Result 1072003 states and 1240597 transitions. [2023-12-20 02:51:17,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 170 states. [2023-12-20 02:51:17,029 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 16.8) internal successors, (504), 30 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2023-12-20 02:51:17,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:51:18,770 INFO L225 Difference]: With dead ends: 1072003 [2023-12-20 02:51:18,770 INFO L226 Difference]: Without dead ends: 917231 [2023-12-20 02:51:18,922 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 524 GetRequests, 329 SyntacticMatches, 1 SemanticMatches, 194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14352 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=4862, Invalid=33358, Unknown=0, NotChecked=0, Total=38220 [2023-12-20 02:51:18,923 INFO L413 NwaCegarLoop]: 416 mSDtfsCounter, 12491 mSDsluCounter, 7501 mSDsCounter, 0 mSdLazyCounter, 6487 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12491 SdHoareTripleChecker+Valid, 7917 SdHoareTripleChecker+Invalid, 6621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 6487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-12-20 02:51:18,923 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12491 Valid, 7917 Invalid, 6621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 6487 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-12-20 02:51:19,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 917231 states. [2023-12-20 02:51:24,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 917231 to 207986. [2023-12-20 02:51:24,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207986 states, 207985 states have (on average 1.1665072000384644) internal successors, (242616), 207985 states have internal predecessors, (242616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:51:24,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207986 states to 207986 states and 242616 transitions. [2023-12-20 02:51:24,904 INFO L78 Accepts]: Start accepts. Automaton has 207986 states and 242616 transitions. Word has length 177 [2023-12-20 02:51:24,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:51:24,904 INFO L495 AbstractCegarLoop]: Abstraction has 207986 states and 242616 transitions. [2023-12-20 02:51:24,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 16.8) internal successors, (504), 30 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:51:24,905 INFO L276 IsEmpty]: Start isEmpty. Operand 207986 states and 242616 transitions. [2023-12-20 02:51:24,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2023-12-20 02:51:24,934 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:51:24,934 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:51:24,943 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-20 02:51:25,140 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,SelfDestructingSolverStorable75 [2023-12-20 02:51:25,141 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:51:25,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:51:25,142 INFO L85 PathProgramCache]: Analyzing trace with hash -434272963, now seen corresponding path program 1 times [2023-12-20 02:51:25,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:51:25,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431151494] [2023-12-20 02:51:25,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:51:25,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:51:25,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:51:25,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:51:25,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:51:25,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431151494] [2023-12-20 02:51:25,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431151494] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:51:25,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:51:25,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 02:51:25,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866214237] [2023-12-20 02:51:25,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:51:25,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 02:51:25,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:51:25,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 02:51:25,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-20 02:51:25,247 INFO L87 Difference]: Start difference. First operand 207986 states and 242616 transitions. Second operand has 6 states, 6 states have (on average 29.666666666666668) internal successors, (178), 6 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:51:26,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:51:26,214 INFO L93 Difference]: Finished difference Result 246201 states and 288621 transitions. [2023-12-20 02:51:26,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 02:51:26,214 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 29.666666666666668) internal successors, (178), 6 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 178 [2023-12-20 02:51:26,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:51:26,502 INFO L225 Difference]: With dead ends: 246201 [2023-12-20 02:51:26,502 INFO L226 Difference]: Without dead ends: 222015 [2023-12-20 02:51:26,561 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2023-12-20 02:51:26,562 INFO L413 NwaCegarLoop]: 641 mSDtfsCounter, 1055 mSDsluCounter, 747 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1055 SdHoareTripleChecker+Valid, 1388 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 02:51:26,562 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1055 Valid, 1388 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 02:51:26,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222015 states. [2023-12-20 02:51:28,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222015 to 201871. [2023-12-20 02:51:28,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201871 states, 201870 states have (on average 1.1650022291573785) internal successors, (235179), 201870 states have internal predecessors, (235179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:51:29,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201871 states to 201871 states and 235179 transitions. [2023-12-20 02:51:29,229 INFO L78 Accepts]: Start accepts. Automaton has 201871 states and 235179 transitions. Word has length 178 [2023-12-20 02:51:29,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:51:29,229 INFO L495 AbstractCegarLoop]: Abstraction has 201871 states and 235179 transitions. [2023-12-20 02:51:29,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.666666666666668) internal successors, (178), 6 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:51:29,229 INFO L276 IsEmpty]: Start isEmpty. Operand 201871 states and 235179 transitions. [2023-12-20 02:51:29,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2023-12-20 02:51:29,255 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:51:29,256 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:51:29,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2023-12-20 02:51:29,256 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:51:29,256 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:51:29,256 INFO L85 PathProgramCache]: Analyzing trace with hash -113111230, now seen corresponding path program 1 times [2023-12-20 02:51:29,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:51:29,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241737467] [2023-12-20 02:51:29,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:51:29,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:51:29,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:51:29,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:51:29,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:51:29,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241737467] [2023-12-20 02:51:29,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241737467] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:51:29,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:51:29,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 02:51:29,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112693769] [2023-12-20 02:51:29,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:51:29,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 02:51:29,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:51:29,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 02:51:29,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-20 02:51:29,350 INFO L87 Difference]: Start difference. First operand 201871 states and 235179 transitions. Second operand has 6 states, 6 states have (on average 30.0) internal successors, (180), 6 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:51:30,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:51:30,131 INFO L93 Difference]: Finished difference Result 242885 states and 284300 transitions. [2023-12-20 02:51:30,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 02:51:30,132 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 30.0) internal successors, (180), 6 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 180 [2023-12-20 02:51:30,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:51:30,378 INFO L225 Difference]: With dead ends: 242885 [2023-12-20 02:51:30,378 INFO L226 Difference]: Without dead ends: 211640 [2023-12-20 02:51:30,436 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2023-12-20 02:51:30,436 INFO L413 NwaCegarLoop]: 661 mSDtfsCounter, 1060 mSDsluCounter, 758 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1060 SdHoareTripleChecker+Valid, 1419 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 02:51:30,436 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1060 Valid, 1419 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 02:51:30,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211640 states. [2023-12-20 02:51:32,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211640 to 190770. [2023-12-20 02:51:32,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190770 states, 190769 states have (on average 1.1623639060853703) internal successors, (221743), 190769 states have internal predecessors, (221743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:51:32,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190770 states to 190770 states and 221743 transitions. [2023-12-20 02:51:32,831 INFO L78 Accepts]: Start accepts. Automaton has 190770 states and 221743 transitions. Word has length 180 [2023-12-20 02:51:32,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:51:32,831 INFO L495 AbstractCegarLoop]: Abstraction has 190770 states and 221743 transitions. [2023-12-20 02:51:32,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 30.0) internal successors, (180), 6 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:51:32,831 INFO L276 IsEmpty]: Start isEmpty. Operand 190770 states and 221743 transitions. [2023-12-20 02:51:32,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2023-12-20 02:51:32,866 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:51:32,866 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:51:32,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2023-12-20 02:51:32,866 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:51:32,866 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:51:32,866 INFO L85 PathProgramCache]: Analyzing trace with hash -1896089757, now seen corresponding path program 1 times [2023-12-20 02:51:32,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:51:32,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368639144] [2023-12-20 02:51:32,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:51:32,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:51:32,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:51:32,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:51:32,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:51:32,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368639144] [2023-12-20 02:51:32,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368639144] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:51:32,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:51:32,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 02:51:32,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150929486] [2023-12-20 02:51:32,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:51:32,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 02:51:32,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:51:32,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 02:51:32,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-12-20 02:51:32,971 INFO L87 Difference]: Start difference. First operand 190770 states and 221743 transitions. Second operand has 6 states, 6 states have (on average 30.166666666666668) internal successors, (181), 6 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:51:33,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:51:33,715 INFO L93 Difference]: Finished difference Result 231552 states and 270993 transitions. [2023-12-20 02:51:33,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 02:51:33,716 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 30.166666666666668) internal successors, (181), 6 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 181 [2023-12-20 02:51:33,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:51:33,952 INFO L225 Difference]: With dead ends: 231552 [2023-12-20 02:51:33,952 INFO L226 Difference]: Without dead ends: 213816 [2023-12-20 02:51:34,003 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-12-20 02:51:34,004 INFO L413 NwaCegarLoop]: 759 mSDtfsCounter, 632 mSDsluCounter, 1196 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 632 SdHoareTripleChecker+Valid, 1955 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 02:51:34,004 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [632 Valid, 1955 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 02:51:34,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213816 states. [2023-12-20 02:51:35,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213816 to 192412. [2023-12-20 02:51:35,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192412 states, 192411 states have (on average 1.1623140049165588) internal successors, (223642), 192411 states have internal predecessors, (223642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:51:36,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192412 states to 192412 states and 223642 transitions. [2023-12-20 02:51:36,359 INFO L78 Accepts]: Start accepts. Automaton has 192412 states and 223642 transitions. Word has length 181 [2023-12-20 02:51:36,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:51:36,359 INFO L495 AbstractCegarLoop]: Abstraction has 192412 states and 223642 transitions. [2023-12-20 02:51:36,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 30.166666666666668) internal successors, (181), 6 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:51:36,359 INFO L276 IsEmpty]: Start isEmpty. Operand 192412 states and 223642 transitions. [2023-12-20 02:51:36,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2023-12-20 02:51:36,396 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:51:36,396 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:51:36,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2023-12-20 02:51:36,397 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:51:36,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:51:36,397 INFO L85 PathProgramCache]: Analyzing trace with hash -271112349, now seen corresponding path program 1 times [2023-12-20 02:51:36,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:51:36,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320001062] [2023-12-20 02:51:36,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:51:36,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:51:36,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:51:36,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:51:36,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:51:36,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320001062] [2023-12-20 02:51:36,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320001062] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:51:36,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:51:36,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 02:51:36,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432622418] [2023-12-20 02:51:36,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:51:36,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 02:51:36,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:51:36,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 02:51:36,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-12-20 02:51:36,543 INFO L87 Difference]: Start difference. First operand 192412 states and 223642 transitions. Second operand has 6 states, 6 states have (on average 30.166666666666668) internal successors, (181), 6 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:51:37,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:51:37,383 INFO L93 Difference]: Finished difference Result 230681 states and 269681 transitions. [2023-12-20 02:51:37,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 02:51:37,384 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 30.166666666666668) internal successors, (181), 6 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 181 [2023-12-20 02:51:37,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:51:37,700 INFO L225 Difference]: With dead ends: 230681 [2023-12-20 02:51:37,700 INFO L226 Difference]: Without dead ends: 213593 [2023-12-20 02:51:37,772 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-12-20 02:51:37,773 INFO L413 NwaCegarLoop]: 750 mSDtfsCounter, 637 mSDsluCounter, 646 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 637 SdHoareTripleChecker+Valid, 1396 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 02:51:37,773 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [637 Valid, 1396 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 02:51:37,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213593 states. [2023-12-20 02:51:39,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213593 to 184792. [2023-12-20 02:51:39,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184792 states, 184791 states have (on average 1.1600294386631385) internal successors, (214363), 184791 states have internal predecessors, (214363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:51:40,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184792 states to 184792 states and 214363 transitions. [2023-12-20 02:51:40,407 INFO L78 Accepts]: Start accepts. Automaton has 184792 states and 214363 transitions. Word has length 181 [2023-12-20 02:51:40,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:51:40,407 INFO L495 AbstractCegarLoop]: Abstraction has 184792 states and 214363 transitions. [2023-12-20 02:51:40,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 30.166666666666668) internal successors, (181), 6 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:51:40,407 INFO L276 IsEmpty]: Start isEmpty. Operand 184792 states and 214363 transitions. [2023-12-20 02:51:40,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2023-12-20 02:51:40,443 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:51:40,443 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:51:40,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2023-12-20 02:51:40,444 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:51:40,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:51:40,445 INFO L85 PathProgramCache]: Analyzing trace with hash -983660587, now seen corresponding path program 1 times [2023-12-20 02:51:40,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:51:40,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799501001] [2023-12-20 02:51:40,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:51:40,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:51:40,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:51:40,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:51:40,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:51:40,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799501001] [2023-12-20 02:51:40,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799501001] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:51:40,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:51:40,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 02:51:40,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786082968] [2023-12-20 02:51:40,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:51:40,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 02:51:40,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:51:40,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 02:51:40,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-12-20 02:51:40,621 INFO L87 Difference]: Start difference. First operand 184792 states and 214363 transitions. Second operand has 6 states, 6 states have (on average 30.166666666666668) internal successors, (181), 6 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:51:41,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:51:41,374 INFO L93 Difference]: Finished difference Result 210535 states and 245161 transitions. [2023-12-20 02:51:41,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-20 02:51:41,375 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 30.166666666666668) internal successors, (181), 6 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 181 [2023-12-20 02:51:41,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:51:41,600 INFO L225 Difference]: With dead ends: 210535 [2023-12-20 02:51:41,600 INFO L226 Difference]: Without dead ends: 199005 [2023-12-20 02:51:41,625 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-12-20 02:51:41,625 INFO L413 NwaCegarLoop]: 770 mSDtfsCounter, 644 mSDsluCounter, 980 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 644 SdHoareTripleChecker+Valid, 1750 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 02:51:41,626 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [644 Valid, 1750 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 02:51:41,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199005 states. [2023-12-20 02:51:43,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199005 to 181551. [2023-12-20 02:51:43,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181551 states, 181550 states have (on average 1.1590856513357202) internal successors, (210432), 181550 states have internal predecessors, (210432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:51:43,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181551 states to 181551 states and 210432 transitions. [2023-12-20 02:51:43,500 INFO L78 Accepts]: Start accepts. Automaton has 181551 states and 210432 transitions. Word has length 181 [2023-12-20 02:51:43,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:51:43,501 INFO L495 AbstractCegarLoop]: Abstraction has 181551 states and 210432 transitions. [2023-12-20 02:51:43,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 30.166666666666668) internal successors, (181), 6 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:51:43,501 INFO L276 IsEmpty]: Start isEmpty. Operand 181551 states and 210432 transitions. [2023-12-20 02:51:43,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2023-12-20 02:51:43,541 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:51:43,541 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:51:43,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2023-12-20 02:51:43,542 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:51:43,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:51:43,542 INFO L85 PathProgramCache]: Analyzing trace with hash -1714475269, now seen corresponding path program 1 times [2023-12-20 02:51:43,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:51:43,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447337915] [2023-12-20 02:51:43,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:51:43,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:51:43,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:51:43,916 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:51:43,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:51:43,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447337915] [2023-12-20 02:51:43,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447337915] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 02:51:43,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1438737793] [2023-12-20 02:51:43,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:51:43,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 02:51:43,917 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 02:51:43,918 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 02:51:43,920 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-20 02:51:44,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:51:44,096 INFO L262 TraceCheckSpWp]: Trace formula consists of 680 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-20 02:51:44,104 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 02:51:44,396 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:51:44,397 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 02:51:44,601 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:51:44,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1438737793] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 02:51:44,601 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 02:51:44,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 14 [2023-12-20 02:51:44,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895703623] [2023-12-20 02:51:44,602 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 02:51:44,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-20 02:51:44,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:51:44,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-20 02:51:44,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2023-12-20 02:51:44,603 INFO L87 Difference]: Start difference. First operand 181551 states and 210432 transitions. Second operand has 14 states, 14 states have (on average 37.785714285714285) internal successors, (529), 14 states have internal predecessors, (529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:51:45,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:51:45,596 INFO L93 Difference]: Finished difference Result 254507 states and 296011 transitions. [2023-12-20 02:51:45,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-20 02:51:45,597 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 37.785714285714285) internal successors, (529), 14 states have internal predecessors, (529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 188 [2023-12-20 02:51:45,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:51:45,833 INFO L225 Difference]: With dead ends: 254507 [2023-12-20 02:51:45,833 INFO L226 Difference]: Without dead ends: 202574 [2023-12-20 02:51:45,873 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 388 GetRequests, 369 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=102, Invalid=278, Unknown=0, NotChecked=0, Total=380 [2023-12-20 02:51:45,874 INFO L413 NwaCegarLoop]: 244 mSDtfsCounter, 3301 mSDsluCounter, 691 mSDsCounter, 0 mSdLazyCounter, 590 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3301 SdHoareTripleChecker+Valid, 935 SdHoareTripleChecker+Invalid, 644 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-20 02:51:45,874 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3301 Valid, 935 Invalid, 644 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 590 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-20 02:51:45,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202574 states. [2023-12-20 02:51:47,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202574 to 181010. [2023-12-20 02:51:47,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181010 states, 181009 states have (on average 1.1563126695357688) internal successors, (209303), 181009 states have internal predecessors, (209303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:51:47,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181010 states to 181010 states and 209303 transitions. [2023-12-20 02:51:47,802 INFO L78 Accepts]: Start accepts. Automaton has 181010 states and 209303 transitions. Word has length 188 [2023-12-20 02:51:47,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:51:47,802 INFO L495 AbstractCegarLoop]: Abstraction has 181010 states and 209303 transitions. [2023-12-20 02:51:47,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 37.785714285714285) internal successors, (529), 14 states have internal predecessors, (529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:51:47,802 INFO L276 IsEmpty]: Start isEmpty. Operand 181010 states and 209303 transitions. [2023-12-20 02:51:48,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2023-12-20 02:51:48,163 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:51:48,163 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:51:48,168 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-20 02:51:48,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 02:51:48,364 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:51:48,365 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:51:48,365 INFO L85 PathProgramCache]: Analyzing trace with hash -987774309, now seen corresponding path program 1 times [2023-12-20 02:51:48,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:51:48,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245772150] [2023-12-20 02:51:48,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:51:48,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:51:48,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:51:48,431 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:51:48,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:51:48,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245772150] [2023-12-20 02:51:48,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245772150] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 02:51:48,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1239274387] [2023-12-20 02:51:48,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:51:48,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 02:51:48,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 02:51:48,433 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 02:51:48,437 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-20 02:51:48,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:51:48,584 INFO L262 TraceCheckSpWp]: Trace formula consists of 683 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-20 02:51:48,586 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 02:51:48,976 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:51:48,976 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 02:51:49,180 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:51:49,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1239274387] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 02:51:49,180 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 02:51:49,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 14 [2023-12-20 02:51:49,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489433913] [2023-12-20 02:51:49,180 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 02:51:49,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-20 02:51:49,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:51:49,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-20 02:51:49,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2023-12-20 02:51:49,182 INFO L87 Difference]: Start difference. First operand 181010 states and 209303 transitions. Second operand has 14 states, 14 states have (on average 38.57142857142857) internal successors, (540), 14 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:51:50,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:51:50,315 INFO L93 Difference]: Finished difference Result 268166 states and 307996 transitions. [2023-12-20 02:51:50,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-20 02:51:50,316 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 38.57142857142857) internal successors, (540), 14 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 189 [2023-12-20 02:51:50,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:51:50,578 INFO L225 Difference]: With dead ends: 268166 [2023-12-20 02:51:50,578 INFO L226 Difference]: Without dead ends: 208396 [2023-12-20 02:51:50,662 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 371 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=102, Invalid=278, Unknown=0, NotChecked=0, Total=380 [2023-12-20 02:51:50,662 INFO L413 NwaCegarLoop]: 243 mSDtfsCounter, 2924 mSDsluCounter, 894 mSDsCounter, 0 mSdLazyCounter, 747 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2924 SdHoareTripleChecker+Valid, 1137 SdHoareTripleChecker+Invalid, 797 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 747 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-20 02:51:50,662 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2924 Valid, 1137 Invalid, 797 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 747 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-20 02:51:50,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208396 states. [2023-12-20 02:51:52,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208396 to 180220. [2023-12-20 02:51:52,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180220 states, 180219 states have (on average 1.1526032216358986) internal successors, (207721), 180219 states have internal predecessors, (207721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:51:53,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180220 states to 180220 states and 207721 transitions. [2023-12-20 02:51:53,052 INFO L78 Accepts]: Start accepts. Automaton has 180220 states and 207721 transitions. Word has length 189 [2023-12-20 02:51:53,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:51:53,052 INFO L495 AbstractCegarLoop]: Abstraction has 180220 states and 207721 transitions. [2023-12-20 02:51:53,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 38.57142857142857) internal successors, (540), 14 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:51:53,052 INFO L276 IsEmpty]: Start isEmpty. Operand 180220 states and 207721 transitions. [2023-12-20 02:51:53,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2023-12-20 02:51:53,095 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:51:53,095 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:51:53,101 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-20 02:51:53,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 02:51:53,301 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:51:53,302 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:51:53,302 INFO L85 PathProgramCache]: Analyzing trace with hash 247955628, now seen corresponding path program 1 times [2023-12-20 02:51:53,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:51:53,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932643762] [2023-12-20 02:51:53,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:51:53,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:51:53,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:51:53,377 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:51:53,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:51:53,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932643762] [2023-12-20 02:51:53,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932643762] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 02:51:53,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1330063707] [2023-12-20 02:51:53,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:51:53,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 02:51:53,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 02:51:53,379 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 02:51:53,379 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-20 02:51:53,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:51:53,568 INFO L262 TraceCheckSpWp]: Trace formula consists of 683 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-20 02:51:53,570 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 02:51:53,968 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:51:53,968 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 02:51:54,165 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:51:54,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1330063707] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 02:51:54,166 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 02:51:54,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 14 [2023-12-20 02:51:54,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758125682] [2023-12-20 02:51:54,167 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 02:51:54,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-20 02:51:54,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:51:54,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-20 02:51:54,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2023-12-20 02:51:54,168 INFO L87 Difference]: Start difference. First operand 180220 states and 207721 transitions. Second operand has 14 states, 14 states have (on average 38.285714285714285) internal successors, (536), 14 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:51:55,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:51:55,327 INFO L93 Difference]: Finished difference Result 297444 states and 342491 transitions. [2023-12-20 02:51:55,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-20 02:51:55,328 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 38.285714285714285) internal successors, (536), 14 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 189 [2023-12-20 02:51:55,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:51:55,603 INFO L225 Difference]: With dead ends: 297444 [2023-12-20 02:51:55,603 INFO L226 Difference]: Without dead ends: 218510 [2023-12-20 02:51:55,679 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 371 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=102, Invalid=278, Unknown=0, NotChecked=0, Total=380 [2023-12-20 02:51:55,679 INFO L413 NwaCegarLoop]: 236 mSDtfsCounter, 2559 mSDsluCounter, 822 mSDsCounter, 0 mSdLazyCounter, 653 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2559 SdHoareTripleChecker+Valid, 1058 SdHoareTripleChecker+Invalid, 699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 653 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-20 02:51:55,679 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2559 Valid, 1058 Invalid, 699 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 653 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-20 02:51:55,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218510 states. [2023-12-20 02:51:57,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218510 to 182284. [2023-12-20 02:51:57,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182284 states, 182283 states have (on average 1.1480225802735307) internal successors, (209265), 182283 states have internal predecessors, (209265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:51:58,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182284 states to 182284 states and 209265 transitions. [2023-12-20 02:51:58,086 INFO L78 Accepts]: Start accepts. Automaton has 182284 states and 209265 transitions. Word has length 189 [2023-12-20 02:51:58,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:51:58,086 INFO L495 AbstractCegarLoop]: Abstraction has 182284 states and 209265 transitions. [2023-12-20 02:51:58,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 38.285714285714285) internal successors, (536), 14 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:51:58,086 INFO L276 IsEmpty]: Start isEmpty. Operand 182284 states and 209265 transitions. [2023-12-20 02:51:58,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2023-12-20 02:51:58,139 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:51:58,139 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:51:58,144 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-20 02:51:58,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 02:51:58,346 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:51:58,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:51:58,346 INFO L85 PathProgramCache]: Analyzing trace with hash -1305645660, now seen corresponding path program 1 times [2023-12-20 02:51:58,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:51:58,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719109234] [2023-12-20 02:51:58,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:51:58,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:51:58,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:51:58,409 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:51:58,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:51:58,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719109234] [2023-12-20 02:51:58,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719109234] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 02:51:58,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1694340854] [2023-12-20 02:51:58,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:51:58,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 02:51:58,410 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 02:51:58,411 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 02:51:58,415 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-20 02:51:58,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:51:58,576 INFO L262 TraceCheckSpWp]: Trace formula consists of 686 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-20 02:51:58,578 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 02:51:58,956 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:51:58,957 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 02:51:59,386 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:51:59,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1694340854] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 02:51:59,386 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 02:51:59,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 14 [2023-12-20 02:51:59,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410705392] [2023-12-20 02:51:59,387 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 02:51:59,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-20 02:51:59,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:51:59,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-20 02:51:59,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2023-12-20 02:51:59,388 INFO L87 Difference]: Start difference. First operand 182284 states and 209265 transitions. Second operand has 14 states, 14 states have (on average 37.857142857142854) internal successors, (530), 14 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:52:00,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:52:00,408 INFO L93 Difference]: Finished difference Result 279088 states and 322053 transitions. [2023-12-20 02:52:00,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-20 02:52:00,416 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 37.857142857142854) internal successors, (530), 14 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 191 [2023-12-20 02:52:00,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:52:00,695 INFO L225 Difference]: With dead ends: 279088 [2023-12-20 02:52:00,695 INFO L226 Difference]: Without dead ends: 203032 [2023-12-20 02:52:00,747 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 393 GetRequests, 374 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=102, Invalid=278, Unknown=0, NotChecked=0, Total=380 [2023-12-20 02:52:00,748 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 2345 mSDsluCounter, 496 mSDsCounter, 0 mSdLazyCounter, 406 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2345 SdHoareTripleChecker+Valid, 705 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-20 02:52:00,751 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2345 Valid, 705 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 406 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-20 02:52:00,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203032 states. [2023-12-20 02:52:02,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203032 to 178556. [2023-12-20 02:52:02,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178556 states, 178555 states have (on average 1.143042759933914) internal successors, (204096), 178555 states have internal predecessors, (204096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:52:03,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178556 states to 178556 states and 204096 transitions. [2023-12-20 02:52:03,040 INFO L78 Accepts]: Start accepts. Automaton has 178556 states and 204096 transitions. Word has length 191 [2023-12-20 02:52:03,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:52:03,040 INFO L495 AbstractCegarLoop]: Abstraction has 178556 states and 204096 transitions. [2023-12-20 02:52:03,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 37.857142857142854) internal successors, (530), 14 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:52:03,040 INFO L276 IsEmpty]: Start isEmpty. Operand 178556 states and 204096 transitions. [2023-12-20 02:52:03,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2023-12-20 02:52:03,105 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:52:03,105 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:52:03,112 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-20 02:52:03,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 02:52:03,313 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:52:03,313 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:52:03,314 INFO L85 PathProgramCache]: Analyzing trace with hash 177643297, now seen corresponding path program 1 times [2023-12-20 02:52:03,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:52:03,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013343392] [2023-12-20 02:52:03,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:52:03,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:52:03,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:52:03,941 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-12-20 02:52:03,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:52:03,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013343392] [2023-12-20 02:52:03,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013343392] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:52:03,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:52:03,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 02:52:03,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747968985] [2023-12-20 02:52:03,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:52:03,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 02:52:03,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:52:03,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 02:52:03,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 02:52:03,942 INFO L87 Difference]: Start difference. First operand 178556 states and 204096 transitions. Second operand has 5 states, 5 states have (on average 37.6) internal successors, (188), 5 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:52:04,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:52:04,928 INFO L93 Difference]: Finished difference Result 252916 states and 288721 transitions. [2023-12-20 02:52:04,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-20 02:52:04,929 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 37.6) internal successors, (188), 5 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 195 [2023-12-20 02:52:04,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:52:05,124 INFO L225 Difference]: With dead ends: 252916 [2023-12-20 02:52:05,124 INFO L226 Difference]: Without dead ends: 170361 [2023-12-20 02:52:05,490 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-12-20 02:52:05,490 INFO L413 NwaCegarLoop]: 248 mSDtfsCounter, 1217 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1217 SdHoareTripleChecker+Valid, 554 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-20 02:52:05,490 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1217 Valid, 554 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-20 02:52:05,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170361 states. [2023-12-20 02:52:06,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170361 to 170355. [2023-12-20 02:52:06,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170355 states, 170354 states have (on average 1.1449393615647416) internal successors, (195045), 170354 states have internal predecessors, (195045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:52:07,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170355 states to 170355 states and 195045 transitions. [2023-12-20 02:52:07,396 INFO L78 Accepts]: Start accepts. Automaton has 170355 states and 195045 transitions. Word has length 195 [2023-12-20 02:52:07,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:52:07,396 INFO L495 AbstractCegarLoop]: Abstraction has 170355 states and 195045 transitions. [2023-12-20 02:52:07,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 37.6) internal successors, (188), 5 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:52:07,397 INFO L276 IsEmpty]: Start isEmpty. Operand 170355 states and 195045 transitions. [2023-12-20 02:52:07,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2023-12-20 02:52:07,440 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:52:07,440 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:52:07,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2023-12-20 02:52:07,440 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:52:07,441 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:52:07,441 INFO L85 PathProgramCache]: Analyzing trace with hash -582580676, now seen corresponding path program 1 times [2023-12-20 02:52:07,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:52:07,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678832398] [2023-12-20 02:52:07,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:52:07,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:52:07,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:52:07,652 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:52:07,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:52:07,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678832398] [2023-12-20 02:52:07,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678832398] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 02:52:07,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [75463620] [2023-12-20 02:52:07,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:52:07,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 02:52:07,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 02:52:07,656 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 02:52:07,657 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-20 02:52:07,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:52:07,804 INFO L262 TraceCheckSpWp]: Trace formula consists of 698 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-20 02:52:07,807 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 02:52:08,695 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:52:08,695 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 02:52:10,104 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:52:10,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [75463620] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 02:52:10,104 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 02:52:10,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 13, 14] total 32 [2023-12-20 02:52:10,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966838043] [2023-12-20 02:52:10,104 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 02:52:10,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-12-20 02:52:10,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:52:10,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-12-20 02:52:10,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=924, Unknown=0, NotChecked=0, Total=1056 [2023-12-20 02:52:10,106 INFO L87 Difference]: Start difference. First operand 170355 states and 195045 transitions. Second operand has 33 states, 33 states have (on average 16.363636363636363) internal successors, (540), 32 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:52:17,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:52:17,334 INFO L93 Difference]: Finished difference Result 601043 states and 695926 transitions. [2023-12-20 02:52:17,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2023-12-20 02:52:17,335 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 16.363636363636363) internal successors, (540), 32 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 195 [2023-12-20 02:52:17,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:52:18,188 INFO L225 Difference]: With dead ends: 601043 [2023-12-20 02:52:18,189 INFO L226 Difference]: Without dead ends: 539866 [2023-12-20 02:52:18,296 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 492 GetRequests, 364 SyntacticMatches, 1 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5298 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=3456, Invalid=13056, Unknown=0, NotChecked=0, Total=16512 [2023-12-20 02:52:18,296 INFO L413 NwaCegarLoop]: 456 mSDtfsCounter, 7131 mSDsluCounter, 8460 mSDsCounter, 0 mSdLazyCounter, 6557 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7131 SdHoareTripleChecker+Valid, 8916 SdHoareTripleChecker+Invalid, 6636 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 6557 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-20 02:52:18,296 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7131 Valid, 8916 Invalid, 6636 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 6557 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-20 02:52:18,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539866 states. [2023-12-20 02:52:22,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539866 to 221526. [2023-12-20 02:52:22,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221526 states, 221525 states have (on average 1.1452928563367566) internal successors, (253711), 221525 states have internal predecessors, (253711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:52:22,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221526 states to 221526 states and 253711 transitions. [2023-12-20 02:52:22,554 INFO L78 Accepts]: Start accepts. Automaton has 221526 states and 253711 transitions. Word has length 195 [2023-12-20 02:52:22,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:52:22,554 INFO L495 AbstractCegarLoop]: Abstraction has 221526 states and 253711 transitions. [2023-12-20 02:52:22,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 16.363636363636363) internal successors, (540), 32 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:52:22,555 INFO L276 IsEmpty]: Start isEmpty. Operand 221526 states and 253711 transitions. [2023-12-20 02:52:22,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2023-12-20 02:52:22,615 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:52:22,615 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:52:22,621 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-20 02:52:22,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 02:52:22,821 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:52:22,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:52:22,821 INFO L85 PathProgramCache]: Analyzing trace with hash 1070649528, now seen corresponding path program 1 times [2023-12-20 02:52:22,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:52:22,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18940294] [2023-12-20 02:52:22,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:52:22,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:52:22,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:52:23,378 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:52:23,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:52:23,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18940294] [2023-12-20 02:52:23,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18940294] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 02:52:23,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [844675126] [2023-12-20 02:52:23,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:52:23,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 02:52:23,379 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 02:52:23,381 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 02:52:23,382 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-20 02:52:23,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:52:23,595 INFO L262 TraceCheckSpWp]: Trace formula consists of 701 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-20 02:52:23,598 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 02:52:24,557 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:52:24,557 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 02:52:25,559 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:52:25,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [844675126] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 02:52:25,559 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 02:52:25,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 13, 13] total 31 [2023-12-20 02:52:25,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854402634] [2023-12-20 02:52:25,559 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 02:52:25,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-20 02:52:25,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:52:25,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-20 02:52:25,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=872, Unknown=0, NotChecked=0, Total=992 [2023-12-20 02:52:25,561 INFO L87 Difference]: Start difference. First operand 221526 states and 253711 transitions. Second operand has 32 states, 32 states have (on average 17.53125) internal successors, (561), 31 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:52:31,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:52:31,966 INFO L93 Difference]: Finished difference Result 674724 states and 768130 transitions. [2023-12-20 02:52:31,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2023-12-20 02:52:31,967 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 17.53125) internal successors, (561), 31 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 196 [2023-12-20 02:52:31,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:52:32,856 INFO L225 Difference]: With dead ends: 674724 [2023-12-20 02:52:32,856 INFO L226 Difference]: Without dead ends: 576810 [2023-12-20 02:52:32,945 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 468 GetRequests, 367 SyntacticMatches, 1 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2988 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=2203, Invalid=8099, Unknown=0, NotChecked=0, Total=10302 [2023-12-20 02:52:32,945 INFO L413 NwaCegarLoop]: 539 mSDtfsCounter, 6927 mSDsluCounter, 8269 mSDsCounter, 0 mSdLazyCounter, 7199 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6927 SdHoareTripleChecker+Valid, 8808 SdHoareTripleChecker+Invalid, 7269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 7199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-20 02:52:32,945 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6927 Valid, 8808 Invalid, 7269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 7199 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-20 02:52:33,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576810 states. [2023-12-20 02:52:36,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576810 to 269943. [2023-12-20 02:52:36,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269943 states, 269942 states have (on average 1.1454164227871173) internal successors, (309196), 269942 states have internal predecessors, (309196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:52:37,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269943 states to 269943 states and 309196 transitions. [2023-12-20 02:52:37,814 INFO L78 Accepts]: Start accepts. Automaton has 269943 states and 309196 transitions. Word has length 196 [2023-12-20 02:52:37,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:52:37,814 INFO L495 AbstractCegarLoop]: Abstraction has 269943 states and 309196 transitions. [2023-12-20 02:52:37,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 17.53125) internal successors, (561), 31 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:52:37,814 INFO L276 IsEmpty]: Start isEmpty. Operand 269943 states and 309196 transitions. [2023-12-20 02:52:37,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2023-12-20 02:52:37,878 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:52:37,878 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:52:37,883 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-12-20 02:52:38,083 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,SelfDestructingSolverStorable87 [2023-12-20 02:52:38,084 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:52:38,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:52:38,084 INFO L85 PathProgramCache]: Analyzing trace with hash -185927164, now seen corresponding path program 1 times [2023-12-20 02:52:38,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:52:38,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116096763] [2023-12-20 02:52:38,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:52:38,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:52:38,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:52:38,549 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:52:38,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:52:38,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116096763] [2023-12-20 02:52:38,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116096763] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 02:52:38,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [811917523] [2023-12-20 02:52:38,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:52:38,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 02:52:38,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 02:52:38,551 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 02:52:38,553 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-20 02:52:38,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:52:38,749 INFO L262 TraceCheckSpWp]: Trace formula consists of 698 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-20 02:52:38,752 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 02:52:39,505 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:52:39,505 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 02:52:40,943 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:52:40,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [811917523] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 02:52:40,944 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 02:52:40,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 12, 13] total 31 [2023-12-20 02:52:40,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534882288] [2023-12-20 02:52:40,944 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 02:52:40,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-20 02:52:40,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:52:40,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-20 02:52:40,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=845, Unknown=0, NotChecked=0, Total=992 [2023-12-20 02:52:40,946 INFO L87 Difference]: Start difference. First operand 269943 states and 309196 transitions. Second operand has 32 states, 32 states have (on average 17.75) internal successors, (568), 31 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:52:50,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:52:50,998 INFO L93 Difference]: Finished difference Result 1185947 states and 1359979 transitions. [2023-12-20 02:52:50,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2023-12-20 02:52:50,999 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 17.75) internal successors, (568), 31 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 196 [2023-12-20 02:52:50,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:52:52,886 INFO L225 Difference]: With dead ends: 1185947 [2023-12-20 02:52:52,886 INFO L226 Difference]: Without dead ends: 1096579 [2023-12-20 02:52:53,088 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 502 GetRequests, 368 SyntacticMatches, 0 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5754 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=3830, Invalid=14530, Unknown=0, NotChecked=0, Total=18360 [2023-12-20 02:52:53,088 INFO L413 NwaCegarLoop]: 501 mSDtfsCounter, 8678 mSDsluCounter, 6427 mSDsCounter, 0 mSdLazyCounter, 5341 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8678 SdHoareTripleChecker+Valid, 6928 SdHoareTripleChecker+Invalid, 5441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 5341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-20 02:52:53,089 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8678 Valid, 6928 Invalid, 5441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 5341 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-20 02:52:54,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1096579 states. [2023-12-20 02:53:00,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1096579 to 359641. [2023-12-20 02:53:00,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359641 states, 359640 states have (on average 1.1459403848292737) internal successors, (412126), 359640 states have internal predecessors, (412126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:53:02,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359641 states to 359641 states and 412126 transitions. [2023-12-20 02:53:02,240 INFO L78 Accepts]: Start accepts. Automaton has 359641 states and 412126 transitions. Word has length 196 [2023-12-20 02:53:02,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:53:02,241 INFO L495 AbstractCegarLoop]: Abstraction has 359641 states and 412126 transitions. [2023-12-20 02:53:02,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 17.75) internal successors, (568), 31 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:53:02,241 INFO L276 IsEmpty]: Start isEmpty. Operand 359641 states and 412126 transitions. [2023-12-20 02:53:02,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2023-12-20 02:53:02,323 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:53:02,323 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:53:02,330 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-20 02:53:02,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 02:53:02,530 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:53:02,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:53:02,530 INFO L85 PathProgramCache]: Analyzing trace with hash -1367747568, now seen corresponding path program 1 times [2023-12-20 02:53:02,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:53:02,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884654368] [2023-12-20 02:53:02,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:53:02,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:53:02,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:53:02,942 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-20 02:53:02,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:53:02,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884654368] [2023-12-20 02:53:02,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884654368] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:53:02,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:53:02,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-20 02:53:02,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369692812] [2023-12-20 02:53:02,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:53:02,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-20 02:53:02,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:53:02,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-20 02:53:02,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2023-12-20 02:53:02,943 INFO L87 Difference]: Start difference. First operand 359641 states and 412126 transitions. Second operand has 12 states, 12 states have (on average 16.083333333333332) internal successors, (193), 11 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:53:05,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:53:05,702 INFO L93 Difference]: Finished difference Result 642696 states and 741645 transitions. [2023-12-20 02:53:05,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-12-20 02:53:05,703 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 16.083333333333332) internal successors, (193), 11 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 197 [2023-12-20 02:53:05,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:53:06,622 INFO L225 Difference]: With dead ends: 642696 [2023-12-20 02:53:06,622 INFO L226 Difference]: Without dead ends: 562433 [2023-12-20 02:53:06,756 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=298, Invalid=892, Unknown=0, NotChecked=0, Total=1190 [2023-12-20 02:53:06,756 INFO L413 NwaCegarLoop]: 662 mSDtfsCounter, 3895 mSDsluCounter, 4137 mSDsCounter, 0 mSdLazyCounter, 768 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3895 SdHoareTripleChecker+Valid, 4799 SdHoareTripleChecker+Invalid, 788 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 768 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-20 02:53:06,757 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3895 Valid, 4799 Invalid, 788 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 768 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-20 02:53:07,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562433 states. [2023-12-20 02:53:11,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562433 to 356934. [2023-12-20 02:53:11,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356934 states, 356933 states have (on average 1.146041413934828) internal successors, (409060), 356933 states have internal predecessors, (409060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:53:12,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356934 states to 356934 states and 409060 transitions. [2023-12-20 02:53:12,627 INFO L78 Accepts]: Start accepts. Automaton has 356934 states and 409060 transitions. Word has length 197 [2023-12-20 02:53:12,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:53:12,628 INFO L495 AbstractCegarLoop]: Abstraction has 356934 states and 409060 transitions. [2023-12-20 02:53:12,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 16.083333333333332) internal successors, (193), 11 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:53:12,628 INFO L276 IsEmpty]: Start isEmpty. Operand 356934 states and 409060 transitions. [2023-12-20 02:53:12,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2023-12-20 02:53:12,705 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:53:12,706 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:53:12,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2023-12-20 02:53:12,706 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:53:12,707 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:53:12,707 INFO L85 PathProgramCache]: Analyzing trace with hash 277842117, now seen corresponding path program 1 times [2023-12-20 02:53:12,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:53:12,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913743628] [2023-12-20 02:53:12,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:53:12,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:53:12,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:53:12,792 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-20 02:53:12,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:53:12,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913743628] [2023-12-20 02:53:12,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913743628] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:53:12,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 02:53:12,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 02:53:12,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967063137] [2023-12-20 02:53:12,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:53:12,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-20 02:53:12,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:53:12,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-20 02:53:12,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-20 02:53:12,793 INFO L87 Difference]: Start difference. First operand 356934 states and 409060 transitions. Second operand has 4 states, 4 states have (on average 48.25) internal successors, (193), 4 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:53:15,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:53:15,486 INFO L93 Difference]: Finished difference Result 718864 states and 827982 transitions. [2023-12-20 02:53:15,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 02:53:15,486 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 48.25) internal successors, (193), 4 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 197 [2023-12-20 02:53:15,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:53:16,429 INFO L225 Difference]: With dead ends: 718864 [2023-12-20 02:53:16,429 INFO L226 Difference]: Without dead ends: 599819 [2023-12-20 02:53:16,519 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-20 02:53:16,520 INFO L413 NwaCegarLoop]: 489 mSDtfsCounter, 515 mSDsluCounter, 591 mSDsCounter, 0 mSdLazyCounter, 468 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 515 SdHoareTripleChecker+Valid, 1080 SdHoareTripleChecker+Invalid, 475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-20 02:53:16,520 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [515 Valid, 1080 Invalid, 475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 468 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-20 02:53:16,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599819 states. [2023-12-20 02:53:21,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599819 to 350317. [2023-12-20 02:53:21,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350317 states, 350316 states have (on average 1.145774101097295) internal successors, (401383), 350316 states have internal predecessors, (401383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:53:22,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350317 states to 350317 states and 401383 transitions. [2023-12-20 02:53:22,233 INFO L78 Accepts]: Start accepts. Automaton has 350317 states and 401383 transitions. Word has length 197 [2023-12-20 02:53:22,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 02:53:22,233 INFO L495 AbstractCegarLoop]: Abstraction has 350317 states and 401383 transitions. [2023-12-20 02:53:22,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 48.25) internal successors, (193), 4 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:53:22,233 INFO L276 IsEmpty]: Start isEmpty. Operand 350317 states and 401383 transitions. [2023-12-20 02:53:22,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2023-12-20 02:53:22,300 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 02:53:22,301 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 02:53:22,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2023-12-20 02:53:22,301 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 02:53:22,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 02:53:22,301 INFO L85 PathProgramCache]: Analyzing trace with hash -738349398, now seen corresponding path program 1 times [2023-12-20 02:53:22,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 02:53:22,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317724921] [2023-12-20 02:53:22,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:53:22,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 02:53:22,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:53:24,169 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 02:53:24,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 02:53:24,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317724921] [2023-12-20 02:53:24,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317724921] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 02:53:24,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1246009445] [2023-12-20 02:53:24,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 02:53:24,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 02:53:24,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 02:53:24,171 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 02:53:24,173 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-20 02:53:24,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 02:53:24,360 INFO L262 TraceCheckSpWp]: Trace formula consists of 704 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-20 02:53:24,363 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 02:53:25,309 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-20 02:53:25,309 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-20 02:53:25,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1246009445] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 02:53:25,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-20 02:53:25,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [27] total 40 [2023-12-20 02:53:25,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934949790] [2023-12-20 02:53:25,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 02:53:25,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-20 02:53:25,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 02:53:25,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-20 02:53:25,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=1448, Unknown=0, NotChecked=0, Total=1560 [2023-12-20 02:53:25,311 INFO L87 Difference]: Start difference. First operand 350317 states and 401383 transitions. Second operand has 14 states, 14 states have (on average 13.785714285714286) internal successors, (193), 14 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 02:53:27,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 02:53:27,447 INFO L93 Difference]: Finished difference Result 481888 states and 552996 transitions. [2023-12-20 02:53:27,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-20 02:53:27,448 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 13.785714285714286) internal successors, (193), 14 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 197 [2023-12-20 02:53:27,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 02:53:28,069 INFO L225 Difference]: With dead ends: 481888 [2023-12-20 02:53:28,069 INFO L226 Difference]: Without dead ends: 423907 [2023-12-20 02:53:28,151 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 388 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=225, Invalid=2427, Unknown=0, NotChecked=0, Total=2652 [2023-12-20 02:53:28,151 INFO L413 NwaCegarLoop]: 595 mSDtfsCounter, 2141 mSDsluCounter, 6041 mSDsCounter, 0 mSdLazyCounter, 882 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2141 SdHoareTripleChecker+Valid, 6636 SdHoareTripleChecker+Invalid, 890 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 882 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-20 02:53:28,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2141 Valid, 6636 Invalid, 890 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 882 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-20 02:53:28,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423907 states. [2023-12-20 02:53:31,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423907 to 349865. [2023-12-20 02:53:31,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349865 states, 349864 states have (on average 1.1458623922438433) internal successors, (400896), 349864 states have internal predecessors, (400896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)