/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/seq-mthreaded-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 [2023-12-21 13:21:22,515 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 13:21:22,600 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-21 13:21:22,604 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 13:21:22,604 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 13:21:22,630 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 13:21:22,631 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 13:21:22,631 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 13:21:22,632 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 13:21:22,635 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 13:21:22,636 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 13:21:22,636 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 13:21:22,636 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 13:21:22,638 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 13:21:22,638 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 13:21:22,638 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 13:21:22,638 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 13:21:22,638 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 13:21:22,640 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-21 13:21:22,640 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 13:21:22,640 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 13:21:22,640 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 13:21:22,641 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 13:21:22,641 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 13:21:22,641 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 13:21:22,641 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 13:21:22,641 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 13:21:22,642 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 13:21:22,642 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 13:21:22,642 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 13:21:22,643 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 13:21:22,643 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 13:21:22,644 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 13:21:22,644 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 13:21:22,644 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 13:21:22,644 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 13:21:22,644 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-21 13:21:22,645 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-21 13:21:22,645 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 13:21:22,645 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 13:21:22,645 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 13:21:22,645 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 13:21:22,645 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 13:21:22,646 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-21 13:21:22,854 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 13:21:22,870 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 13:21:22,872 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 13:21:22,873 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 13:21:22,874 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 13:21:22,875 INFO L431 ainManager$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 [2023-12-21 13:21:23,995 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 13:21:24,235 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 13:21:24,236 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 [2023-12-21 13:21:24,253 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c36828f7b/d0437a6d08134776b1be8d10ae126d50/FLAG80896a505 [2023-12-21 13:21:24,263 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c36828f7b/d0437a6d08134776b1be8d10ae126d50 [2023-12-21 13:21:24,265 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 13:21:24,266 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 13:21:24,267 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 13:21:24,267 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 13:21:24,271 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 13:21:24,272 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 01:21:24" (1/1) ... [2023-12-21 13:21:24,273 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4501f8d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:21:24, skipping insertion in model container [2023-12-21 13:21:24,273 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 01:21:24" (1/1) ... [2023-12-21 13:21:24,328 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 13:21:24,577 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] [2023-12-21 13:21:24,652 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 13:21:24,664 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 13:21:24,774 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] [2023-12-21 13:21:24,822 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 13:21:24,843 INFO L206 MainTranslator]: Completed translation [2023-12-21 13:21:24,843 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:21:24 WrapperNode [2023-12-21 13:21:24,843 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 13:21:24,844 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 13:21:24,844 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 13:21:24,845 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 13:21:24,852 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:21:24" (1/1) ... [2023-12-21 13:21:24,868 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:21:24" (1/1) ... [2023-12-21 13:21:24,938 INFO L138 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1455 [2023-12-21 13:21:24,939 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 13:21:24,939 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 13:21:24,940 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 13:21:24,940 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 13:21:24,950 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:21:24" (1/1) ... [2023-12-21 13:21:24,950 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:21:24" (1/1) ... [2023-12-21 13:21:24,963 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:21:24" (1/1) ... [2023-12-21 13:21:24,990 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-21 13:21:24,990 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:21:24" (1/1) ... [2023-12-21 13:21:24,991 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:21:24" (1/1) ... [2023-12-21 13:21:25,006 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:21:24" (1/1) ... [2023-12-21 13:21:25,014 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:21:24" (1/1) ... [2023-12-21 13:21:25,018 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:21:24" (1/1) ... [2023-12-21 13:21:25,022 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:21:24" (1/1) ... [2023-12-21 13:21:25,028 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 13:21:25,029 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 13:21:25,030 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 13:21:25,030 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 13:21:25,030 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:21:24" (1/1) ... [2023-12-21 13:21:25,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 13:21:25,056 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:21:25,080 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-21 13:21:25,101 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-21 13:21:25,108 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 13:21:25,108 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-21 13:21:25,108 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 13:21:25,108 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 13:21:25,217 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 13:21:25,218 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 13:21:26,153 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 13:21:26,203 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 13:21:26,204 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-21 13:21:26,204 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 01:21:26 BoogieIcfgContainer [2023-12-21 13:21:26,204 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 13:21:26,207 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 13:21:26,207 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 13:21:26,210 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 13:21:26,210 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 01:21:24" (1/3) ... [2023-12-21 13:21:26,211 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45b98909 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 01:21:26, skipping insertion in model container [2023-12-21 13:21:26,211 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:21:24" (2/3) ... [2023-12-21 13:21:26,211 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45b98909 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 01:21:26, skipping insertion in model container [2023-12-21 13:21:26,211 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 01:21:26" (3/3) ... [2023-12-21 13:21:26,212 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c.p+lhb-reducer.c [2023-12-21 13:21:26,227 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 13:21:26,227 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-21 13:21:26,294 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 13:21:26,304 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;@79035a9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 13:21:26,305 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-21 13:21:26,313 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) [2023-12-21 13:21:26,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-12-21 13:21:26,334 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:21:26,335 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] [2023-12-21 13:21:26,335 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:21:26,339 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:21:26,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1487174172, now seen corresponding path program 1 times [2023-12-21 13:21:26,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:21:26,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253863670] [2023-12-21 13:21:26,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:21:26,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:21:26,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:21:26,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:21:26,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:21:26,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253863670] [2023-12-21 13:21:26,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253863670] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:21:26,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:21:26,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 13:21:26,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569409227] [2023-12-21 13:21:26,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:21:26,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 13:21:26,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:21:26,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 13:21:26,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 13:21:26,920 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) [2023-12-21 13:21:27,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:21:27,091 INFO L93 Difference]: Finished difference Result 821 states and 1335 transitions. [2023-12-21 13:21:27,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 13:21:27,094 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 [2023-12-21 13:21:27,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:21:27,104 INFO L225 Difference]: With dead ends: 821 [2023-12-21 13:21:27,105 INFO L226 Difference]: Without dead ends: 420 [2023-12-21 13:21:27,110 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 [2023-12-21 13:21:27,113 INFO L413 NwaCegarLoop]: 683 mSDtfsCounter, 128 mSDsluCounter, 1205 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 [2023-12-21 13:21:27,113 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] [2023-12-21 13:21:27,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2023-12-21 13:21:27,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 420. [2023-12-21 13:21:27,179 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) [2023-12-21 13:21:27,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 655 transitions. [2023-12-21 13:21:27,182 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 655 transitions. Word has length 106 [2023-12-21 13:21:27,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:21:27,182 INFO L495 AbstractCegarLoop]: Abstraction has 420 states and 655 transitions. [2023-12-21 13:21:27,182 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) [2023-12-21 13:21:27,182 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 655 transitions. [2023-12-21 13:21:27,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-12-21 13:21:27,189 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:21:27,190 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] [2023-12-21 13:21:27,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-21 13:21:27,190 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:21:27,191 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:21:27,191 INFO L85 PathProgramCache]: Analyzing trace with hash 590537494, now seen corresponding path program 1 times [2023-12-21 13:21:27,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:21:27,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681490808] [2023-12-21 13:21:27,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:21:27,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:21:27,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:21:27,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:21:27,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:21:27,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681490808] [2023-12-21 13:21:27,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681490808] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:21:27,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:21:27,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:21:27,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452104628] [2023-12-21 13:21:27,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:21:27,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:21:27,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:21:27,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:21:27,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:21:27,349 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) [2023-12-21 13:21:27,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:21:27,398 INFO L93 Difference]: Finished difference Result 1044 states and 1650 transitions. [2023-12-21 13:21:27,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:21:27,399 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 [2023-12-21 13:21:27,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:21:27,405 INFO L225 Difference]: With dead ends: 1044 [2023-12-21 13:21:27,406 INFO L226 Difference]: Without dead ends: 664 [2023-12-21 13:21:27,409 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 [2023-12-21 13:21:27,410 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 [2023-12-21 13:21:27,411 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] [2023-12-21 13:21:27,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 664 states. [2023-12-21 13:21:27,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 664 to 662. [2023-12-21 13:21:27,438 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) [2023-12-21 13:21:27,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 662 states to 662 states and 1037 transitions. [2023-12-21 13:21:27,440 INFO L78 Accepts]: Start accepts. Automaton has 662 states and 1037 transitions. Word has length 129 [2023-12-21 13:21:27,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:21:27,442 INFO L495 AbstractCegarLoop]: Abstraction has 662 states and 1037 transitions. [2023-12-21 13:21:27,442 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) [2023-12-21 13:21:27,442 INFO L276 IsEmpty]: Start isEmpty. Operand 662 states and 1037 transitions. [2023-12-21 13:21:27,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-12-21 13:21:27,445 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:21:27,446 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] [2023-12-21 13:21:27,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-21 13:21:27,446 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:21:27,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:21:27,454 INFO L85 PathProgramCache]: Analyzing trace with hash -1340377907, now seen corresponding path program 1 times [2023-12-21 13:21:27,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:21:27,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435157465] [2023-12-21 13:21:27,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:21:27,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:21:27,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:21:27,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:21:27,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:21:27,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435157465] [2023-12-21 13:21:27,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435157465] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:21:27,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:21:27,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:21:27,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307172934] [2023-12-21 13:21:27,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:21:27,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:21:27,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:21:27,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:21:27,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:21:27,598 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) [2023-12-21 13:21:27,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:21:27,643 INFO L93 Difference]: Finished difference Result 1678 states and 2651 transitions. [2023-12-21 13:21:27,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:21:27,644 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 [2023-12-21 13:21:27,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:21:27,648 INFO L225 Difference]: With dead ends: 1678 [2023-12-21 13:21:27,648 INFO L226 Difference]: Without dead ends: 1069 [2023-12-21 13:21:27,650 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 [2023-12-21 13:21:27,653 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 [2023-12-21 13:21:27,654 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] [2023-12-21 13:21:27,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1069 states. [2023-12-21 13:21:27,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1069 to 1067. [2023-12-21 13:21:27,677 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) [2023-12-21 13:21:27,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1067 states to 1067 states and 1672 transitions. [2023-12-21 13:21:27,682 INFO L78 Accepts]: Start accepts. Automaton has 1067 states and 1672 transitions. Word has length 132 [2023-12-21 13:21:27,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:21:27,685 INFO L495 AbstractCegarLoop]: Abstraction has 1067 states and 1672 transitions. [2023-12-21 13:21:27,686 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) [2023-12-21 13:21:27,690 INFO L276 IsEmpty]: Start isEmpty. Operand 1067 states and 1672 transitions. [2023-12-21 13:21:27,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-12-21 13:21:27,693 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:21:27,693 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] [2023-12-21 13:21:27,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-21 13:21:27,693 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:21:27,694 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:21:27,694 INFO L85 PathProgramCache]: Analyzing trace with hash -934271025, now seen corresponding path program 1 times [2023-12-21 13:21:27,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:21:27,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820941331] [2023-12-21 13:21:27,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:21:27,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:21:27,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:21:27,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:21:27,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:21:27,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820941331] [2023-12-21 13:21:27,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820941331] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:21:27,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:21:27,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:21:27,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431762655] [2023-12-21 13:21:27,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:21:27,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:21:27,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:21:27,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:21:27,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:21:27,777 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) [2023-12-21 13:21:27,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:21:27,825 INFO L93 Difference]: Finished difference Result 2717 states and 4275 transitions. [2023-12-21 13:21:27,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:21:27,826 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 [2023-12-21 13:21:27,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:21:27,832 INFO L225 Difference]: With dead ends: 2717 [2023-12-21 13:21:27,832 INFO L226 Difference]: Without dead ends: 1716 [2023-12-21 13:21:27,833 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 [2023-12-21 13:21:27,838 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 [2023-12-21 13:21:27,838 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] [2023-12-21 13:21:27,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1716 states. [2023-12-21 13:21:27,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1716 to 1714. [2023-12-21 13:21:27,880 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) [2023-12-21 13:21:27,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1714 states to 1714 states and 2674 transitions. [2023-12-21 13:21:27,885 INFO L78 Accepts]: Start accepts. Automaton has 1714 states and 2674 transitions. Word has length 135 [2023-12-21 13:21:27,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:21:27,885 INFO L495 AbstractCegarLoop]: Abstraction has 1714 states and 2674 transitions. [2023-12-21 13:21:27,885 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) [2023-12-21 13:21:27,885 INFO L276 IsEmpty]: Start isEmpty. Operand 1714 states and 2674 transitions. [2023-12-21 13:21:27,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-21 13:21:27,889 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:21:27,889 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] [2023-12-21 13:21:27,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-21 13:21:27,890 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:21:27,890 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:21:27,890 INFO L85 PathProgramCache]: Analyzing trace with hash 944557568, now seen corresponding path program 1 times [2023-12-21 13:21:27,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:21:27,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698342782] [2023-12-21 13:21:27,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:21:27,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:21:27,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:21:27,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:21:27,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:21:27,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698342782] [2023-12-21 13:21:27,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698342782] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:21:27,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:21:27,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:21:27,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207865334] [2023-12-21 13:21:27,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:21:27,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:21:27,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:21:27,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:21:27,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:21:27,965 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) [2023-12-21 13:21:28,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:21:28,016 INFO L93 Difference]: Finished difference Result 4314 states and 6728 transitions. [2023-12-21 13:21:28,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:21:28,016 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 [2023-12-21 13:21:28,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:21:28,025 INFO L225 Difference]: With dead ends: 4314 [2023-12-21 13:21:28,025 INFO L226 Difference]: Without dead ends: 2679 [2023-12-21 13:21:28,027 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 [2023-12-21 13:21:28,028 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 [2023-12-21 13:21:28,028 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] [2023-12-21 13:21:28,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2679 states. [2023-12-21 13:21:28,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2679 to 2677. [2023-12-21 13:21:28,069 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) [2023-12-21 13:21:28,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2677 states to 2677 states and 4132 transitions. [2023-12-21 13:21:28,077 INFO L78 Accepts]: Start accepts. Automaton has 2677 states and 4132 transitions. Word has length 138 [2023-12-21 13:21:28,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:21:28,078 INFO L495 AbstractCegarLoop]: Abstraction has 2677 states and 4132 transitions. [2023-12-21 13:21:28,078 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) [2023-12-21 13:21:28,078 INFO L276 IsEmpty]: Start isEmpty. Operand 2677 states and 4132 transitions. [2023-12-21 13:21:28,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-12-21 13:21:28,084 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:21:28,084 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] [2023-12-21 13:21:28,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-21 13:21:28,084 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:21:28,085 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:21:28,085 INFO L85 PathProgramCache]: Analyzing trace with hash -2062360604, now seen corresponding path program 1 times [2023-12-21 13:21:28,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:21:28,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327154666] [2023-12-21 13:21:28,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:21:28,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:21:28,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:21:28,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:21:28,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:21:28,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327154666] [2023-12-21 13:21:28,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327154666] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:21:28,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:21:28,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 13:21:28,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067551083] [2023-12-21 13:21:28,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:21:28,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 13:21:28,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:21:28,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 13:21:28,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-21 13:21:28,229 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) [2023-12-21 13:21:28,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:21:28,533 INFO L93 Difference]: Finished difference Result 14016 states and 21618 transitions. [2023-12-21 13:21:28,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 13:21:28,534 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 [2023-12-21 13:21:28,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:21:28,570 INFO L225 Difference]: With dead ends: 14016 [2023-12-21 13:21:28,570 INFO L226 Difference]: Without dead ends: 11422 [2023-12-21 13:21:28,575 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 [2023-12-21 13:21:28,576 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 [2023-12-21 13:21:28,576 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] [2023-12-21 13:21:28,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11422 states. [2023-12-21 13:21:28,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11422 to 5187. [2023-12-21 13:21:28,722 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) [2023-12-21 13:21:28,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5187 states to 5187 states and 7889 transitions. [2023-12-21 13:21:28,739 INFO L78 Accepts]: Start accepts. Automaton has 5187 states and 7889 transitions. Word has length 141 [2023-12-21 13:21:28,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:21:28,739 INFO L495 AbstractCegarLoop]: Abstraction has 5187 states and 7889 transitions. [2023-12-21 13:21:28,740 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) [2023-12-21 13:21:28,740 INFO L276 IsEmpty]: Start isEmpty. Operand 5187 states and 7889 transitions. [2023-12-21 13:21:28,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-21 13:21:28,750 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:21:28,750 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] [2023-12-21 13:21:28,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-21 13:21:28,750 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:21:28,750 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:21:28,751 INFO L85 PathProgramCache]: Analyzing trace with hash -431758134, now seen corresponding path program 1 times [2023-12-21 13:21:28,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:21:28,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41842813] [2023-12-21 13:21:28,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:21:28,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:21:28,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:21:28,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:21:28,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:21:28,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41842813] [2023-12-21 13:21:28,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41842813] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:21:28,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:21:28,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:21:28,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261170967] [2023-12-21 13:21:28,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:21:28,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:21:28,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:21:28,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:21:28,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:21:28,829 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) [2023-12-21 13:21:28,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:21:28,934 INFO L93 Difference]: Finished difference Result 14632 states and 22198 transitions. [2023-12-21 13:21:28,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:21:28,935 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 [2023-12-21 13:21:28,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:21:28,978 INFO L225 Difference]: With dead ends: 14632 [2023-12-21 13:21:28,978 INFO L226 Difference]: Without dead ends: 9674 [2023-12-21 13:21:28,986 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 [2023-12-21 13:21:28,987 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 [2023-12-21 13:21:28,987 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] [2023-12-21 13:21:28,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9674 states. [2023-12-21 13:21:29,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9674 to 9672. [2023-12-21 13:21:29,192 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) [2023-12-21 13:21:29,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9672 states to 9672 states and 14545 transitions. [2023-12-21 13:21:29,230 INFO L78 Accepts]: Start accepts. Automaton has 9672 states and 14545 transitions. Word has length 145 [2023-12-21 13:21:29,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:21:29,230 INFO L495 AbstractCegarLoop]: Abstraction has 9672 states and 14545 transitions. [2023-12-21 13:21:29,231 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) [2023-12-21 13:21:29,231 INFO L276 IsEmpty]: Start isEmpty. Operand 9672 states and 14545 transitions. [2023-12-21 13:21:29,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-21 13:21:29,250 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:21:29,250 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] [2023-12-21 13:21:29,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-21 13:21:29,250 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:21:29,250 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:21:29,251 INFO L85 PathProgramCache]: Analyzing trace with hash -1022138189, now seen corresponding path program 1 times [2023-12-21 13:21:29,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:21:29,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621490824] [2023-12-21 13:21:29,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:21:29,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:21:29,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:21:29,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:21:29,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:21:29,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621490824] [2023-12-21 13:21:29,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621490824] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:21:29,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:21:29,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:21:29,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836483248] [2023-12-21 13:21:29,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:21:29,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:21:29,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:21:29,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:21:29,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:21:29,346 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) [2023-12-21 13:21:29,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:21:29,504 INFO L93 Difference]: Finished difference Result 26792 states and 40068 transitions. [2023-12-21 13:21:29,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:21:29,505 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 [2023-12-21 13:21:29,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:21:29,537 INFO L225 Difference]: With dead ends: 26792 [2023-12-21 13:21:29,537 INFO L226 Difference]: Without dead ends: 17839 [2023-12-21 13:21:29,551 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 [2023-12-21 13:21:29,553 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 [2023-12-21 13:21:29,553 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] [2023-12-21 13:21:29,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17839 states. [2023-12-21 13:21:29,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17839 to 17837. [2023-12-21 13:21:29,870 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) [2023-12-21 13:21:29,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17837 states to 17837 states and 26405 transitions. [2023-12-21 13:21:29,909 INFO L78 Accepts]: Start accepts. Automaton has 17837 states and 26405 transitions. Word has length 145 [2023-12-21 13:21:29,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:21:29,909 INFO L495 AbstractCegarLoop]: Abstraction has 17837 states and 26405 transitions. [2023-12-21 13:21:29,910 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) [2023-12-21 13:21:29,910 INFO L276 IsEmpty]: Start isEmpty. Operand 17837 states and 26405 transitions. [2023-12-21 13:21:29,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-21 13:21:29,944 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:21:29,945 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] [2023-12-21 13:21:29,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-21 13:21:29,945 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:21:29,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:21:29,945 INFO L85 PathProgramCache]: Analyzing trace with hash -1185775444, now seen corresponding path program 1 times [2023-12-21 13:21:29,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:21:29,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138404528] [2023-12-21 13:21:29,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:21:29,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:21:29,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:21:30,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:21:30,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:21:30,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138404528] [2023-12-21 13:21:30,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138404528] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:21:30,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:21:30,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:21:30,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331359424] [2023-12-21 13:21:30,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:21:30,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:21:30,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:21:30,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:21:30,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:21:30,027 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) [2023-12-21 13:21:30,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:21:30,399 INFO L93 Difference]: Finished difference Result 50668 states and 74633 transitions. [2023-12-21 13:21:30,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:21:30,401 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 [2023-12-21 13:21:30,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:21:30,472 INFO L225 Difference]: With dead ends: 50668 [2023-12-21 13:21:30,472 INFO L226 Difference]: Without dead ends: 33146 [2023-12-21 13:21:30,501 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 [2023-12-21 13:21:30,503 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 [2023-12-21 13:21:30,503 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] [2023-12-21 13:21:30,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33146 states. [2023-12-21 13:21:31,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33146 to 33144. [2023-12-21 13:21:31,111 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) [2023-12-21 13:21:31,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33144 states to 33144 states and 48296 transitions. [2023-12-21 13:21:31,252 INFO L78 Accepts]: Start accepts. Automaton has 33144 states and 48296 transitions. Word has length 145 [2023-12-21 13:21:31,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:21:31,252 INFO L495 AbstractCegarLoop]: Abstraction has 33144 states and 48296 transitions. [2023-12-21 13:21:31,253 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) [2023-12-21 13:21:31,253 INFO L276 IsEmpty]: Start isEmpty. Operand 33144 states and 48296 transitions. [2023-12-21 13:21:31,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-12-21 13:21:31,310 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:21:31,310 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] [2023-12-21 13:21:31,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-21 13:21:31,311 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:21:31,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:21:31,311 INFO L85 PathProgramCache]: Analyzing trace with hash -1207544778, now seen corresponding path program 1 times [2023-12-21 13:21:31,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:21:31,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609349480] [2023-12-21 13:21:31,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:21:31,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:21:31,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:21:31,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:21:31,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:21:31,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609349480] [2023-12-21 13:21:31,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609349480] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:21:31,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:21:31,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:21:31,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746900575] [2023-12-21 13:21:31,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:21:31,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:21:31,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:21:31,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:21:31,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:21:31,381 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) [2023-12-21 13:21:31,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:21:31,737 INFO L93 Difference]: Finished difference Result 93945 states and 136144 transitions. [2023-12-21 13:21:31,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:21:31,738 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 [2023-12-21 13:21:31,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:21:31,953 INFO L225 Difference]: With dead ends: 93945 [2023-12-21 13:21:31,954 INFO L226 Difference]: Without dead ends: 61067 [2023-12-21 13:21:32,006 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 [2023-12-21 13:21:32,006 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 [2023-12-21 13:21:32,007 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] [2023-12-21 13:21:32,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61067 states. [2023-12-21 13:21:32,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61067 to 61065. [2023-12-21 13:21:33,045 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) [2023-12-21 13:21:33,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61065 states to 61065 states and 87495 transitions. [2023-12-21 13:21:33,371 INFO L78 Accepts]: Start accepts. Automaton has 61065 states and 87495 transitions. Word has length 145 [2023-12-21 13:21:33,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:21:33,372 INFO L495 AbstractCegarLoop]: Abstraction has 61065 states and 87495 transitions. [2023-12-21 13:21:33,372 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) [2023-12-21 13:21:33,372 INFO L276 IsEmpty]: Start isEmpty. Operand 61065 states and 87495 transitions. [2023-12-21 13:21:33,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-12-21 13:21:33,450 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:21:33,450 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] [2023-12-21 13:21:33,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-21 13:21:33,451 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:21:33,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:21:33,451 INFO L85 PathProgramCache]: Analyzing trace with hash 1995772061, now seen corresponding path program 1 times [2023-12-21 13:21:33,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:21:33,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519085588] [2023-12-21 13:21:33,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:21:33,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:21:33,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:21:33,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:21:33,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:21:33,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519085588] [2023-12-21 13:21:33,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519085588] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:21:33,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:21:33,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 13:21:33,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390022399] [2023-12-21 13:21:33,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:21:33,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 13:21:33,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:21:33,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 13:21:33,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-12-21 13:21:33,901 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) [2023-12-21 13:21:34,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:21:34,487 INFO L93 Difference]: Finished difference Result 100178 states and 142154 transitions. [2023-12-21 13:21:34,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 13:21:34,487 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 [2023-12-21 13:21:34,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:21:34,608 INFO L225 Difference]: With dead ends: 100178 [2023-12-21 13:21:34,609 INFO L226 Difference]: Without dead ends: 61271 [2023-12-21 13:21:34,641 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 [2023-12-21 13:21:34,642 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, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 13:21:34,642 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2424 Valid, 2635 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 13:21:34,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61271 states. [2023-12-21 13:21:35,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61271 to 59627. [2023-12-21 13:21:35,630 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) [2023-12-21 13:21:35,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59627 states to 59627 states and 84027 transitions. [2023-12-21 13:21:35,728 INFO L78 Accepts]: Start accepts. Automaton has 59627 states and 84027 transitions. Word has length 146 [2023-12-21 13:21:35,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:21:35,729 INFO L495 AbstractCegarLoop]: Abstraction has 59627 states and 84027 transitions. [2023-12-21 13:21:35,729 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) [2023-12-21 13:21:35,729 INFO L276 IsEmpty]: Start isEmpty. Operand 59627 states and 84027 transitions. [2023-12-21 13:21:35,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-12-21 13:21:35,977 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:21:35,977 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] [2023-12-21 13:21:35,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-21 13:21:35,978 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:21:35,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:21:35,978 INFO L85 PathProgramCache]: Analyzing trace with hash -1164400056, now seen corresponding path program 1 times [2023-12-21 13:21:35,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:21:35,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141098435] [2023-12-21 13:21:35,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:21:35,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:21:36,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:21:36,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:21:36,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:21:36,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141098435] [2023-12-21 13:21:36,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141098435] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:21:36,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:21:36,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 13:21:36,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474767455] [2023-12-21 13:21:36,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:21:36,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 13:21:36,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:21:36,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 13:21:36,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-21 13:21:36,192 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) [2023-12-21 13:21:36,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:21:36,928 INFO L93 Difference]: Finished difference Result 130710 states and 186577 transitions. [2023-12-21 13:21:36,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 13:21:36,929 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 [2023-12-21 13:21:36,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:21:37,099 INFO L225 Difference]: With dead ends: 130710 [2023-12-21 13:21:37,100 INFO L226 Difference]: Without dead ends: 108323 [2023-12-21 13:21:37,151 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 [2023-12-21 13:21:37,152 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, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 13:21:37,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2956 Valid, 3788 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 13:21:37,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108323 states. [2023-12-21 13:21:38,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108323 to 81321. [2023-12-21 13:21:38,328 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) [2023-12-21 13:21:38,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81321 states to 81321 states and 114579 transitions. [2023-12-21 13:21:38,709 INFO L78 Accepts]: Start accepts. Automaton has 81321 states and 114579 transitions. Word has length 147 [2023-12-21 13:21:38,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:21:38,709 INFO L495 AbstractCegarLoop]: Abstraction has 81321 states and 114579 transitions. [2023-12-21 13:21:38,710 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) [2023-12-21 13:21:38,710 INFO L276 IsEmpty]: Start isEmpty. Operand 81321 states and 114579 transitions. [2023-12-21 13:21:38,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-12-21 13:21:38,805 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:21:38,805 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] [2023-12-21 13:21:38,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-21 13:21:38,806 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:21:38,806 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:21:38,806 INFO L85 PathProgramCache]: Analyzing trace with hash -702106715, now seen corresponding path program 1 times [2023-12-21 13:21:38,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:21:38,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513149308] [2023-12-21 13:21:38,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:21:38,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:21:38,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:21:38,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:21:38,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:21:38,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513149308] [2023-12-21 13:21:38,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513149308] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:21:38,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:21:38,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:21:38,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822809997] [2023-12-21 13:21:38,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:21:38,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:21:38,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:21:38,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:21:38,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:21:38,886 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) [2023-12-21 13:21:39,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:21:39,188 INFO L93 Difference]: Finished difference Result 108029 states and 151818 transitions. [2023-12-21 13:21:39,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:21:39,189 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 [2023-12-21 13:21:39,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:21:39,283 INFO L225 Difference]: With dead ends: 108029 [2023-12-21 13:21:39,283 INFO L226 Difference]: Without dead ends: 70503 [2023-12-21 13:21:39,325 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 [2023-12-21 13:21:39,326 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 [2023-12-21 13:21:39,326 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] [2023-12-21 13:21:39,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70503 states. [2023-12-21 13:21:40,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70503 to 70421. [2023-12-21 13:21:40,407 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) [2023-12-21 13:21:40,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70421 states to 70421 states and 98300 transitions. [2023-12-21 13:21:40,503 INFO L78 Accepts]: Start accepts. Automaton has 70421 states and 98300 transitions. Word has length 148 [2023-12-21 13:21:40,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:21:40,503 INFO L495 AbstractCegarLoop]: Abstraction has 70421 states and 98300 transitions. [2023-12-21 13:21:40,503 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) [2023-12-21 13:21:40,503 INFO L276 IsEmpty]: Start isEmpty. Operand 70421 states and 98300 transitions. [2023-12-21 13:21:40,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2023-12-21 13:21:40,578 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:21:40,578 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] [2023-12-21 13:21:40,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-21 13:21:40,579 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:21:40,579 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:21:40,579 INFO L85 PathProgramCache]: Analyzing trace with hash 1538059641, now seen corresponding path program 1 times [2023-12-21 13:21:40,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:21:40,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663147089] [2023-12-21 13:21:40,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:21:40,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:21:40,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:21:40,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:21:40,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:21:40,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663147089] [2023-12-21 13:21:40,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663147089] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:21:40,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:21:40,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 13:21:40,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071358905] [2023-12-21 13:21:40,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:21:40,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 13:21:40,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:21:40,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 13:21:40,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-21 13:21:40,775 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) [2023-12-21 13:21:41,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:21:41,543 INFO L93 Difference]: Finished difference Result 129276 states and 182531 transitions. [2023-12-21 13:21:41,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 13:21:41,544 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 [2023-12-21 13:21:41,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:21:41,716 INFO L225 Difference]: With dead ends: 129276 [2023-12-21 13:21:41,716 INFO L226 Difference]: Without dead ends: 109407 [2023-12-21 13:21:41,756 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 [2023-12-21 13:21:41,756 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 [2023-12-21 13:21:41,757 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] [2023-12-21 13:21:41,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109407 states. [2023-12-21 13:21:42,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109407 to 89428. [2023-12-21 13:21:42,967 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) [2023-12-21 13:21:43,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89428 states to 89428 states and 124853 transitions. [2023-12-21 13:21:43,082 INFO L78 Accepts]: Start accepts. Automaton has 89428 states and 124853 transitions. Word has length 149 [2023-12-21 13:21:43,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:21:43,082 INFO L495 AbstractCegarLoop]: Abstraction has 89428 states and 124853 transitions. [2023-12-21 13:21:43,082 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) [2023-12-21 13:21:43,082 INFO L276 IsEmpty]: Start isEmpty. Operand 89428 states and 124853 transitions. [2023-12-21 13:21:43,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2023-12-21 13:21:43,169 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:21:43,170 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] [2023-12-21 13:21:43,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-21 13:21:43,170 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:21:43,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:21:43,171 INFO L85 PathProgramCache]: Analyzing trace with hash 2074812457, now seen corresponding path program 1 times [2023-12-21 13:21:43,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:21:43,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285263107] [2023-12-21 13:21:43,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:21:43,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:21:43,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:21:43,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:21:43,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:21:43,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285263107] [2023-12-21 13:21:43,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285263107] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:21:43,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:21:43,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 13:21:43,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628390451] [2023-12-21 13:21:43,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:21:43,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 13:21:43,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:21:43,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 13:21:43,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-21 13:21:43,346 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) [2023-12-21 13:21:44,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:21:44,248 INFO L93 Difference]: Finished difference Result 142530 states and 200885 transitions. [2023-12-21 13:21:44,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 13:21:44,249 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 [2023-12-21 13:21:44,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:21:44,400 INFO L225 Difference]: With dead ends: 142530 [2023-12-21 13:21:44,400 INFO L226 Difference]: Without dead ends: 126175 [2023-12-21 13:21:44,441 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 [2023-12-21 13:21:44,442 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, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 13:21:44,442 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3155 Valid, 3274 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 13:21:44,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126175 states. [2023-12-21 13:21:45,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126175 to 104220. [2023-12-21 13:21:46,243 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) [2023-12-21 13:21:46,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104220 states to 104220 states and 145548 transitions. [2023-12-21 13:21:46,425 INFO L78 Accepts]: Start accepts. Automaton has 104220 states and 145548 transitions. Word has length 149 [2023-12-21 13:21:46,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:21:46,426 INFO L495 AbstractCegarLoop]: Abstraction has 104220 states and 145548 transitions. [2023-12-21 13:21:46,426 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) [2023-12-21 13:21:46,426 INFO L276 IsEmpty]: Start isEmpty. Operand 104220 states and 145548 transitions. [2023-12-21 13:21:46,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-12-21 13:21:46,511 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:21:46,512 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] [2023-12-21 13:21:46,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-21 13:21:46,512 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:21:46,512 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:21:46,512 INFO L85 PathProgramCache]: Analyzing trace with hash -2097434774, now seen corresponding path program 1 times [2023-12-21 13:21:46,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:21:46,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698744111] [2023-12-21 13:21:46,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:21:46,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:21:46,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:21:46,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:21:46,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:21:46,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698744111] [2023-12-21 13:21:46,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698744111] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:21:46,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:21:46,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:21:46,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267709453] [2023-12-21 13:21:46,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:21:46,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:21:46,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:21:46,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:21:46,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:21:46,599 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) [2023-12-21 13:21:47,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:21:47,224 INFO L93 Difference]: Finished difference Result 138153 states and 192446 transitions. [2023-12-21 13:21:47,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:21:47,224 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 [2023-12-21 13:21:47,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:21:47,321 INFO L225 Difference]: With dead ends: 138153 [2023-12-21 13:21:47,321 INFO L226 Difference]: Without dead ends: 95864 [2023-12-21 13:21:47,353 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 [2023-12-21 13:21:47,353 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 [2023-12-21 13:21:47,354 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] [2023-12-21 13:21:47,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95864 states. [2023-12-21 13:21:48,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95864 to 95817. [2023-12-21 13:21:48,352 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) [2023-12-21 13:21:48,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95817 states to 95817 states and 132526 transitions. [2023-12-21 13:21:48,458 INFO L78 Accepts]: Start accepts. Automaton has 95817 states and 132526 transitions. Word has length 150 [2023-12-21 13:21:48,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:21:48,459 INFO L495 AbstractCegarLoop]: Abstraction has 95817 states and 132526 transitions. [2023-12-21 13:21:48,459 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) [2023-12-21 13:21:48,459 INFO L276 IsEmpty]: Start isEmpty. Operand 95817 states and 132526 transitions. [2023-12-21 13:21:48,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-12-21 13:21:48,817 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:21:48,823 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] [2023-12-21 13:21:48,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-21 13:21:48,823 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:21:48,824 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:21:48,824 INFO L85 PathProgramCache]: Analyzing trace with hash 383016120, now seen corresponding path program 1 times [2023-12-21 13:21:48,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:21:48,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577250141] [2023-12-21 13:21:48,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:21:48,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:21:48,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:21:49,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:21:49,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:21:49,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577250141] [2023-12-21 13:21:49,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577250141] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:21:49,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:21:49,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:21:49,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065441575] [2023-12-21 13:21:49,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:21:49,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:21:49,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:21:49,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:21:49,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:21:49,016 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) [2023-12-21 13:21:49,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:21:49,346 INFO L93 Difference]: Finished difference Result 116826 states and 161374 transitions. [2023-12-21 13:21:49,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:21:49,347 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 [2023-12-21 13:21:49,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:21:49,446 INFO L225 Difference]: With dead ends: 116826 [2023-12-21 13:21:49,446 INFO L226 Difference]: Without dead ends: 91038 [2023-12-21 13:21:49,482 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 [2023-12-21 13:21:49,483 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 [2023-12-21 13:21:49,483 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] [2023-12-21 13:21:49,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91038 states. [2023-12-21 13:21:50,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91038 to 91036. [2023-12-21 13:21:50,722 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) [2023-12-21 13:21:51,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91036 states to 91036 states and 124978 transitions. [2023-12-21 13:21:51,040 INFO L78 Accepts]: Start accepts. Automaton has 91036 states and 124978 transitions. Word has length 150 [2023-12-21 13:21:51,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:21:51,040 INFO L495 AbstractCegarLoop]: Abstraction has 91036 states and 124978 transitions. [2023-12-21 13:21:51,040 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) [2023-12-21 13:21:51,040 INFO L276 IsEmpty]: Start isEmpty. Operand 91036 states and 124978 transitions. [2023-12-21 13:21:51,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-21 13:21:51,120 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:21:51,120 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] [2023-12-21 13:21:51,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-21 13:21:51,120 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:21:51,120 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:21:51,120 INFO L85 PathProgramCache]: Analyzing trace with hash 1649958460, now seen corresponding path program 1 times [2023-12-21 13:21:51,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:21:51,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494532348] [2023-12-21 13:21:51,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:21:51,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:21:51,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:21:51,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:21:51,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:21:51,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494532348] [2023-12-21 13:21:51,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494532348] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:21:51,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:21:51,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 13:21:51,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421463276] [2023-12-21 13:21:51,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:21:51,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 13:21:51,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:21:51,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 13:21:51,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-21 13:21:51,265 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) [2023-12-21 13:21:51,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:21:51,982 INFO L93 Difference]: Finished difference Result 122035 states and 168422 transitions. [2023-12-21 13:21:51,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 13:21:51,982 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 [2023-12-21 13:21:51,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:21:52,112 INFO L225 Difference]: With dead ends: 122035 [2023-12-21 13:21:52,112 INFO L226 Difference]: Without dead ends: 110337 [2023-12-21 13:21:52,140 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 [2023-12-21 13:21:52,140 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, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 13:21:52,140 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2887 Valid, 3708 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 13:21:52,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110337 states. [2023-12-21 13:21:53,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110337 to 101515. [2023-12-21 13:21:53,266 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) [2023-12-21 13:21:53,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101515 states to 101515 states and 139253 transitions. [2023-12-21 13:21:53,393 INFO L78 Accepts]: Start accepts. Automaton has 101515 states and 139253 transitions. Word has length 151 [2023-12-21 13:21:53,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:21:53,393 INFO L495 AbstractCegarLoop]: Abstraction has 101515 states and 139253 transitions. [2023-12-21 13:21:53,393 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) [2023-12-21 13:21:53,393 INFO L276 IsEmpty]: Start isEmpty. Operand 101515 states and 139253 transitions. [2023-12-21 13:21:53,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-21 13:21:53,485 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:21:53,485 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] [2023-12-21 13:21:53,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-21 13:21:53,485 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:21:53,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:21:53,486 INFO L85 PathProgramCache]: Analyzing trace with hash -830378042, now seen corresponding path program 1 times [2023-12-21 13:21:53,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:21:53,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631081967] [2023-12-21 13:21:53,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:21:53,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:21:53,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:21:53,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:21:53,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:21:53,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631081967] [2023-12-21 13:21:53,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631081967] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:21:53,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:21:53,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 13:21:53,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961321069] [2023-12-21 13:21:53,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:21:53,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 13:21:53,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:21:53,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 13:21:53,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:21:53,940 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) [2023-12-21 13:21:55,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:21:55,334 INFO L93 Difference]: Finished difference Result 288460 states and 395410 transitions. [2023-12-21 13:21:55,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 13:21:55,334 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 [2023-12-21 13:21:55,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:21:55,501 INFO L225 Difference]: With dead ends: 288460 [2023-12-21 13:21:55,502 INFO L226 Difference]: Without dead ends: 186980 [2023-12-21 13:21:55,534 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 [2023-12-21 13:21:55,535 INFO L413 NwaCegarLoop]: 348 mSDtfsCounter, 2691 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 459 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 13:21:55,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2691 Valid, 623 Invalid, 477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 459 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 13:21:55,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186980 states. [2023-12-21 13:21:57,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186980 to 186610. [2023-12-21 13:21:57,906 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) [2023-12-21 13:21:58,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186610 states to 186610 states and 254557 transitions. [2023-12-21 13:21:58,168 INFO L78 Accepts]: Start accepts. Automaton has 186610 states and 254557 transitions. Word has length 152 [2023-12-21 13:21:58,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:21:58,169 INFO L495 AbstractCegarLoop]: Abstraction has 186610 states and 254557 transitions. [2023-12-21 13:21:58,169 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) [2023-12-21 13:21:58,169 INFO L276 IsEmpty]: Start isEmpty. Operand 186610 states and 254557 transitions. [2023-12-21 13:21:58,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-21 13:21:58,757 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:21:58,757 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] [2023-12-21 13:21:58,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-21 13:21:58,757 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:21:58,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:21:58,757 INFO L85 PathProgramCache]: Analyzing trace with hash -1460148789, now seen corresponding path program 1 times [2023-12-21 13:21:58,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:21:58,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096071385] [2023-12-21 13:21:58,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:21:58,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:21:58,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:21:58,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:21:58,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:21:58,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096071385] [2023-12-21 13:21:58,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096071385] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:21:58,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:21:58,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:21:58,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068263497] [2023-12-21 13:21:58,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:21:58,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:21:58,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:21:58,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:21:58,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:21:58,887 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) [2023-12-21 13:21:59,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:21:59,817 INFO L93 Difference]: Finished difference Result 295842 states and 405035 transitions. [2023-12-21 13:21:59,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:21:59,818 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 [2023-12-21 13:21:59,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:22:00,176 INFO L225 Difference]: With dead ends: 295842 [2023-12-21 13:22:00,176 INFO L226 Difference]: Without dead ends: 128871 [2023-12-21 13:22:00,326 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 [2023-12-21 13:22:00,327 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 [2023-12-21 13:22:00,327 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] [2023-12-21 13:22:00,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128871 states. [2023-12-21 13:22:02,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128871 to 128869. [2023-12-21 13:22:02,416 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) [2023-12-21 13:22:02,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128869 states to 128869 states and 174947 transitions. [2023-12-21 13:22:02,889 INFO L78 Accepts]: Start accepts. Automaton has 128869 states and 174947 transitions. Word has length 152 [2023-12-21 13:22:02,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:22:02,889 INFO L495 AbstractCegarLoop]: Abstraction has 128869 states and 174947 transitions. [2023-12-21 13:22:02,890 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) [2023-12-21 13:22:02,890 INFO L276 IsEmpty]: Start isEmpty. Operand 128869 states and 174947 transitions. [2023-12-21 13:22:02,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-21 13:22:02,957 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:22:02,957 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] [2023-12-21 13:22:02,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-21 13:22:02,957 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:22:02,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:22:02,958 INFO L85 PathProgramCache]: Analyzing trace with hash -1374115809, now seen corresponding path program 1 times [2023-12-21 13:22:02,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:22:02,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834568682] [2023-12-21 13:22:02,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:22:02,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:22:02,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:22:03,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:22:03,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:22:03,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834568682] [2023-12-21 13:22:03,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834568682] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:22:03,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:22:03,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 13:22:03,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438753121] [2023-12-21 13:22:03,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:22:03,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 13:22:03,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:22:03,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 13:22:03,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-21 13:22:03,229 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) [2023-12-21 13:22:04,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:22:04,045 INFO L93 Difference]: Finished difference Result 199599 states and 270524 transitions. [2023-12-21 13:22:04,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 13:22:04,046 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 [2023-12-21 13:22:04,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:22:04,271 INFO L225 Difference]: With dead ends: 199599 [2023-12-21 13:22:04,272 INFO L226 Difference]: Without dead ends: 199597 [2023-12-21 13:22:04,306 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2023-12-21 13:22:04,307 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 [2023-12-21 13:22:04,307 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] [2023-12-21 13:22:04,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199597 states. [2023-12-21 13:22:06,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199597 to 132581. [2023-12-21 13:22:06,357 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) [2023-12-21 13:22:06,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132581 states to 132581 states and 178659 transitions. [2023-12-21 13:22:06,812 INFO L78 Accepts]: Start accepts. Automaton has 132581 states and 178659 transitions. Word has length 152 [2023-12-21 13:22:06,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:22:06,812 INFO L495 AbstractCegarLoop]: Abstraction has 132581 states and 178659 transitions. [2023-12-21 13:22:06,812 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) [2023-12-21 13:22:06,812 INFO L276 IsEmpty]: Start isEmpty. Operand 132581 states and 178659 transitions. [2023-12-21 13:22:06,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-12-21 13:22:06,896 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:22:06,896 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] [2023-12-21 13:22:06,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-21 13:22:06,897 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:22:06,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:22:06,897 INFO L85 PathProgramCache]: Analyzing trace with hash 362656252, now seen corresponding path program 1 times [2023-12-21 13:22:06,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:22:06,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701335849] [2023-12-21 13:22:06,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:22:06,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:22:06,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:22:06,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:22:06,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:22:06,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701335849] [2023-12-21 13:22:06,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701335849] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:22:06,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:22:06,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:22:06,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044505925] [2023-12-21 13:22:06,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:22:06,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:22:06,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:22:06,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:22:06,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:22:06,960 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) [2023-12-21 13:22:07,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:22:07,863 INFO L93 Difference]: Finished difference Result 332950 states and 444967 transitions. [2023-12-21 13:22:07,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:22:07,864 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 [2023-12-21 13:22:07,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:22:08,102 INFO L225 Difference]: With dead ends: 332950 [2023-12-21 13:22:08,102 INFO L226 Difference]: Without dead ends: 200645 [2023-12-21 13:22:08,167 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 [2023-12-21 13:22:08,168 INFO L413 NwaCegarLoop]: 711 mSDtfsCounter, 478 mSDsluCounter, 426 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 13:22:08,169 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [478 Valid, 1137 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 13:22:08,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200645 states. [2023-12-21 13:22:10,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200645 to 200643. [2023-12-21 13:22:10,611 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) [2023-12-21 13:22:11,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200643 states to 200643 states and 264759 transitions. [2023-12-21 13:22:11,293 INFO L78 Accepts]: Start accepts. Automaton has 200643 states and 264759 transitions. Word has length 153 [2023-12-21 13:22:11,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:22:11,293 INFO L495 AbstractCegarLoop]: Abstraction has 200643 states and 264759 transitions. [2023-12-21 13:22:11,294 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) [2023-12-21 13:22:11,294 INFO L276 IsEmpty]: Start isEmpty. Operand 200643 states and 264759 transitions. [2023-12-21 13:22:11,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-12-21 13:22:11,417 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:22:11,417 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] [2023-12-21 13:22:11,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-21 13:22:11,417 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:22:11,418 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:22:11,418 INFO L85 PathProgramCache]: Analyzing trace with hash 145233333, now seen corresponding path program 1 times [2023-12-21 13:22:11,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:22:11,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499322647] [2023-12-21 13:22:11,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:22:11,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:22:11,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:22:11,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:22:11,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:22:11,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499322647] [2023-12-21 13:22:11,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499322647] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:22:11,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:22:11,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:22:11,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441965090] [2023-12-21 13:22:11,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:22:11,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:22:11,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:22:11,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:22:11,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:22:11,510 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) [2023-12-21 13:22:12,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:22:12,429 INFO L93 Difference]: Finished difference Result 274167 states and 361969 transitions. [2023-12-21 13:22:12,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:22:12,430 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 [2023-12-21 13:22:12,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:22:12,552 INFO L225 Difference]: With dead ends: 274167 [2023-12-21 13:22:12,552 INFO L226 Difference]: Without dead ends: 103385 [2023-12-21 13:22:12,611 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 [2023-12-21 13:22:12,612 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 [2023-12-21 13:22:12,612 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] [2023-12-21 13:22:12,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103385 states. [2023-12-21 13:22:13,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103385 to 99447. [2023-12-21 13:22:13,834 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) [2023-12-21 13:22:13,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99447 states to 99447 states and 130702 transitions. [2023-12-21 13:22:13,959 INFO L78 Accepts]: Start accepts. Automaton has 99447 states and 130702 transitions. Word has length 153 [2023-12-21 13:22:13,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:22:13,960 INFO L495 AbstractCegarLoop]: Abstraction has 99447 states and 130702 transitions. [2023-12-21 13:22:13,960 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) [2023-12-21 13:22:13,960 INFO L276 IsEmpty]: Start isEmpty. Operand 99447 states and 130702 transitions. [2023-12-21 13:22:14,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-12-21 13:22:14,274 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:22:14,300 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] [2023-12-21 13:22:14,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-21 13:22:14,300 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:22:14,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:22:14,301 INFO L85 PathProgramCache]: Analyzing trace with hash -572137313, now seen corresponding path program 1 times [2023-12-21 13:22:14,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:22:14,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913938922] [2023-12-21 13:22:14,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:22:14,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:22:14,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:22:14,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:22:14,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:22:14,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913938922] [2023-12-21 13:22:14,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913938922] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:22:14,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:22:14,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-21 13:22:14,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744546947] [2023-12-21 13:22:14,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:22:14,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-21 13:22:14,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:22:14,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-21 13:22:14,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2023-12-21 13:22:14,910 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) [2023-12-21 13:22:17,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:22:17,673 INFO L93 Difference]: Finished difference Result 321578 states and 421058 transitions. [2023-12-21 13:22:17,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-21 13:22:17,676 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 [2023-12-21 13:22:17,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:22:18,004 INFO L225 Difference]: With dead ends: 321578 [2023-12-21 13:22:18,004 INFO L226 Difference]: Without dead ends: 283264 [2023-12-21 13:22:18,068 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=229, Invalid=701, Unknown=0, NotChecked=0, Total=930 [2023-12-21 13:22:18,069 INFO L413 NwaCegarLoop]: 507 mSDtfsCounter, 4068 mSDsluCounter, 3341 mSDsCounter, 0 mSdLazyCounter, 2925 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s 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, 1.6s IncrementalHoareTripleChecker+Time [2023-12-21 13:22:18,069 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4068 Valid, 3848 Invalid, 2951 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 2925 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-12-21 13:22:18,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283264 states. [2023-12-21 13:22:20,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283264 to 110724. [2023-12-21 13:22:20,526 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) [2023-12-21 13:22:20,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110724 states to 110724 states and 145122 transitions. [2023-12-21 13:22:20,670 INFO L78 Accepts]: Start accepts. Automaton has 110724 states and 145122 transitions. Word has length 154 [2023-12-21 13:22:20,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:22:20,670 INFO L495 AbstractCegarLoop]: Abstraction has 110724 states and 145122 transitions. [2023-12-21 13:22:20,670 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) [2023-12-21 13:22:20,670 INFO L276 IsEmpty]: Start isEmpty. Operand 110724 states and 145122 transitions. [2023-12-21 13:22:20,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-12-21 13:22:20,756 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:22:20,756 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] [2023-12-21 13:22:20,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-21 13:22:20,756 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:22:20,756 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:22:20,756 INFO L85 PathProgramCache]: Analyzing trace with hash 1413011258, now seen corresponding path program 1 times [2023-12-21 13:22:20,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:22:20,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466754508] [2023-12-21 13:22:20,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:22:20,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:22:20,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:22:20,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:22:20,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:22:20,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466754508] [2023-12-21 13:22:20,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466754508] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:22:20,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:22:20,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 13:22:20,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689967414] [2023-12-21 13:22:20,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:22:20,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 13:22:20,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:22:20,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 13:22:20,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:22:20,855 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) [2023-12-21 13:22:22,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:22:22,097 INFO L93 Difference]: Finished difference Result 263808 states and 345646 transitions. [2023-12-21 13:22:22,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 13:22:22,098 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 [2023-12-21 13:22:22,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:22:22,265 INFO L225 Difference]: With dead ends: 263808 [2023-12-21 13:22:22,266 INFO L226 Difference]: Without dead ends: 153141 [2023-12-21 13:22:22,341 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 [2023-12-21 13:22:22,341 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, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 13:22:22,341 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2206 Valid, 533 Invalid, 372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 362 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 13:22:22,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153141 states. [2023-12-21 13:22:24,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153141 to 149505. [2023-12-21 13:22:24,248 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) [2023-12-21 13:22:24,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149505 states to 149505 states and 194200 transitions. [2023-12-21 13:22:24,473 INFO L78 Accepts]: Start accepts. Automaton has 149505 states and 194200 transitions. Word has length 154 [2023-12-21 13:22:24,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:22:24,473 INFO L495 AbstractCegarLoop]: Abstraction has 149505 states and 194200 transitions. [2023-12-21 13:22:24,473 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) [2023-12-21 13:22:24,473 INFO L276 IsEmpty]: Start isEmpty. Operand 149505 states and 194200 transitions. [2023-12-21 13:22:24,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-12-21 13:22:24,609 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:22:24,609 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] [2023-12-21 13:22:24,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-21 13:22:24,609 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:22:24,609 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:22:24,609 INFO L85 PathProgramCache]: Analyzing trace with hash -885855189, now seen corresponding path program 1 times [2023-12-21 13:22:24,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:22:24,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365416539] [2023-12-21 13:22:24,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:22:24,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:22:24,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:22:24,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:22:24,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:22:24,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365416539] [2023-12-21 13:22:24,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365416539] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:22:24,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:22:24,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 13:22:24,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833355930] [2023-12-21 13:22:24,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:22:24,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 13:22:24,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:22:24,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 13:22:24,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-21 13:22:24,903 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) [2023-12-21 13:22:28,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:22:28,751 INFO L93 Difference]: Finished difference Result 638284 states and 825944 transitions. [2023-12-21 13:22:28,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-21 13:22:28,751 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 [2023-12-21 13:22:28,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:22:29,870 INFO L225 Difference]: With dead ends: 638284 [2023-12-21 13:22:29,870 INFO L226 Difference]: Without dead ends: 588212 [2023-12-21 13:22:29,983 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 [2023-12-21 13:22:29,984 INFO L413 NwaCegarLoop]: 735 mSDtfsCounter, 3996 mSDsluCounter, 2984 mSDsCounter, 0 mSdLazyCounter, 2712 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s 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, 1.4s IncrementalHoareTripleChecker+Time [2023-12-21 13:22:29,985 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3996 Valid, 3719 Invalid, 2736 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 2712 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-21 13:22:30,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 588212 states. [2023-12-21 13:22:33,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 588212 to 150033. [2023-12-21 13:22:34,063 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) [2023-12-21 13:22:34,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150033 states to 150033 states and 194900 transitions. [2023-12-21 13:22:34,243 INFO L78 Accepts]: Start accepts. Automaton has 150033 states and 194900 transitions. Word has length 154 [2023-12-21 13:22:34,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:22:34,244 INFO L495 AbstractCegarLoop]: Abstraction has 150033 states and 194900 transitions. [2023-12-21 13:22:34,244 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) [2023-12-21 13:22:34,244 INFO L276 IsEmpty]: Start isEmpty. Operand 150033 states and 194900 transitions. [2023-12-21 13:22:34,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-12-21 13:22:34,742 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:22:34,743 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] [2023-12-21 13:22:34,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-12-21 13:22:34,743 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:22:34,743 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:22:34,743 INFO L85 PathProgramCache]: Analyzing trace with hash 286179733, now seen corresponding path program 1 times [2023-12-21 13:22:34,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:22:34,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370298265] [2023-12-21 13:22:34,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:22:34,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:22:34,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:22:34,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:22:34,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:22:34,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370298265] [2023-12-21 13:22:34,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370298265] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:22:34,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:22:34,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:22:34,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142486718] [2023-12-21 13:22:34,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:22:35,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:22:35,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:22:35,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:22:35,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:22:35,000 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) [2023-12-21 13:22:35,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:22:35,535 INFO L93 Difference]: Finished difference Result 206419 states and 268760 transitions. [2023-12-21 13:22:35,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:22:35,536 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 [2023-12-21 13:22:35,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:22:35,614 INFO L225 Difference]: With dead ends: 206419 [2023-12-21 13:22:35,614 INFO L226 Difference]: Without dead ends: 78849 [2023-12-21 13:22:35,680 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 [2023-12-21 13:22:35,681 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 [2023-12-21 13:22:35,681 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] [2023-12-21 13:22:35,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78849 states. [2023-12-21 13:22:36,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78849 to 78847. [2023-12-21 13:22:36,838 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) [2023-12-21 13:22:36,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78847 states to 78847 states and 101270 transitions. [2023-12-21 13:22:36,926 INFO L78 Accepts]: Start accepts. Automaton has 78847 states and 101270 transitions. Word has length 154 [2023-12-21 13:22:36,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:22:36,927 INFO L495 AbstractCegarLoop]: Abstraction has 78847 states and 101270 transitions. [2023-12-21 13:22:36,927 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) [2023-12-21 13:22:36,927 INFO L276 IsEmpty]: Start isEmpty. Operand 78847 states and 101270 transitions. [2023-12-21 13:22:36,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-12-21 13:22:36,988 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:22:36,988 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] [2023-12-21 13:22:36,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-12-21 13:22:36,988 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:22:36,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:22:36,989 INFO L85 PathProgramCache]: Analyzing trace with hash 1360074682, now seen corresponding path program 1 times [2023-12-21 13:22:36,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:22:36,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916742267] [2023-12-21 13:22:36,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:22:36,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:22:37,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:22:37,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:22:37,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:22:37,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916742267] [2023-12-21 13:22:37,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916742267] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:22:37,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:22:37,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:22:37,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161931904] [2023-12-21 13:22:37,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:22:37,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:22:37,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:22:37,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:22:37,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:22:37,051 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) [2023-12-21 13:22:37,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:22:37,975 INFO L93 Difference]: Finished difference Result 214659 states and 275000 transitions. [2023-12-21 13:22:37,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:22:37,976 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 [2023-12-21 13:22:37,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:22:38,131 INFO L225 Difference]: With dead ends: 214659 [2023-12-21 13:22:38,132 INFO L226 Difference]: Without dead ends: 156285 [2023-12-21 13:22:38,187 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 [2023-12-21 13:22:38,187 INFO L413 NwaCegarLoop]: 546 mSDtfsCounter, 287 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 13:22:38,187 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [287 Valid, 828 Invalid, 330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 322 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 13:22:38,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156285 states. [2023-12-21 13:22:39,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156285 to 155737. [2023-12-21 13:22:39,867 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) [2023-12-21 13:22:40,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155737 states to 155737 states and 197904 transitions. [2023-12-21 13:22:40,392 INFO L78 Accepts]: Start accepts. Automaton has 155737 states and 197904 transitions. Word has length 154 [2023-12-21 13:22:40,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:22:40,393 INFO L495 AbstractCegarLoop]: Abstraction has 155737 states and 197904 transitions. [2023-12-21 13:22:40,393 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) [2023-12-21 13:22:40,393 INFO L276 IsEmpty]: Start isEmpty. Operand 155737 states and 197904 transitions. [2023-12-21 13:22:40,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-12-21 13:22:40,562 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:22:40,562 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] [2023-12-21 13:22:40,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-12-21 13:22:40,563 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:22:40,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:22:40,563 INFO L85 PathProgramCache]: Analyzing trace with hash 231571807, now seen corresponding path program 1 times [2023-12-21 13:22:40,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:22:40,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636006354] [2023-12-21 13:22:40,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:22:40,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:22:40,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:22:40,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:22:40,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:22:40,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636006354] [2023-12-21 13:22:40,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636006354] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:22:40,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:22:40,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 13:22:40,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421332959] [2023-12-21 13:22:40,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:22:40,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 13:22:40,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:22:40,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 13:22:40,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-21 13:22:40,818 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) [2023-12-21 13:22:44,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:22:44,273 INFO L93 Difference]: Finished difference Result 754360 states and 960043 transitions. [2023-12-21 13:22:44,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-21 13:22:44,273 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 [2023-12-21 13:22:44,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:22:45,116 INFO L225 Difference]: With dead ends: 754360 [2023-12-21 13:22:45,116 INFO L226 Difference]: Without dead ends: 613452 [2023-12-21 13:22:45,272 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 [2023-12-21 13:22:45,278 INFO L413 NwaCegarLoop]: 606 mSDtfsCounter, 4490 mSDsluCounter, 2519 mSDsCounter, 0 mSdLazyCounter, 2212 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s 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, 1.1s IncrementalHoareTripleChecker+Time [2023-12-21 13:22:45,278 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4490 Valid, 3125 Invalid, 2240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 2212 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-21 13:22:45,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613452 states. [2023-12-21 13:22:49,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613452 to 147415. [2023-12-21 13:22:49,461 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) [2023-12-21 13:22:49,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147415 states to 147415 states and 187224 transitions. [2023-12-21 13:22:49,638 INFO L78 Accepts]: Start accepts. Automaton has 147415 states and 187224 transitions. Word has length 154 [2023-12-21 13:22:49,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:22:49,639 INFO L495 AbstractCegarLoop]: Abstraction has 147415 states and 187224 transitions. [2023-12-21 13:22:49,639 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) [2023-12-21 13:22:49,639 INFO L276 IsEmpty]: Start isEmpty. Operand 147415 states and 187224 transitions. [2023-12-21 13:22:50,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-12-21 13:22:50,103 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:22:50,103 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] [2023-12-21 13:22:50,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-12-21 13:22:50,104 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:22:50,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:22:50,104 INFO L85 PathProgramCache]: Analyzing trace with hash -301084455, now seen corresponding path program 1 times [2023-12-21 13:22:50,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:22:50,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375700211] [2023-12-21 13:22:50,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:22:50,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:22:50,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:22:50,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:22:50,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:22:50,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375700211] [2023-12-21 13:22:50,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375700211] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:22:50,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:22:50,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:22:50,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404730350] [2023-12-21 13:22:50,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:22:50,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:22:50,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:22:50,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:22:50,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:22:50,196 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) [2023-12-21 13:22:50,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:22:50,639 INFO L93 Difference]: Finished difference Result 198291 states and 252522 transitions. [2023-12-21 13:22:50,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:22:50,639 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 [2023-12-21 13:22:50,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:22:50,718 INFO L225 Difference]: With dead ends: 198291 [2023-12-21 13:22:50,718 INFO L226 Difference]: Without dead ends: 78967 [2023-12-21 13:22:50,783 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 [2023-12-21 13:22:50,784 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 [2023-12-21 13:22:50,784 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] [2023-12-21 13:22:51,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78967 states. [2023-12-21 13:22:51,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78967 to 78965. [2023-12-21 13:22:51,784 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) [2023-12-21 13:22:51,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78965 states to 78965 states and 98953 transitions. [2023-12-21 13:22:51,874 INFO L78 Accepts]: Start accepts. Automaton has 78965 states and 98953 transitions. Word has length 154 [2023-12-21 13:22:51,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:22:51,874 INFO L495 AbstractCegarLoop]: Abstraction has 78965 states and 98953 transitions. [2023-12-21 13:22:51,875 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) [2023-12-21 13:22:51,875 INFO L276 IsEmpty]: Start isEmpty. Operand 78965 states and 98953 transitions. [2023-12-21 13:22:51,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-12-21 13:22:51,939 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:22:51,939 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] [2023-12-21 13:22:51,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-12-21 13:22:51,939 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:22:51,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:22:51,939 INFO L85 PathProgramCache]: Analyzing trace with hash -1953477318, now seen corresponding path program 1 times [2023-12-21 13:22:51,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:22:51,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027998060] [2023-12-21 13:22:51,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:22:51,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:22:51,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:22:52,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:22:52,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:22:52,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027998060] [2023-12-21 13:22:52,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027998060] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:22:52,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:22:52,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 13:22:52,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910887086] [2023-12-21 13:22:52,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:22:52,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 13:22:52,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:22:52,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 13:22:52,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:22:52,018 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) [2023-12-21 13:22:52,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:22:52,834 INFO L93 Difference]: Finished difference Result 185409 states and 232148 transitions. [2023-12-21 13:22:52,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 13:22:52,835 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 [2023-12-21 13:22:52,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:22:52,949 INFO L225 Difference]: With dead ends: 185409 [2023-12-21 13:22:52,949 INFO L226 Difference]: Without dead ends: 106754 [2023-12-21 13:22:52,989 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 [2023-12-21 13:22:52,989 INFO L413 NwaCegarLoop]: 249 mSDtfsCounter, 1642 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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 [2023-12-21 13:22:52,989 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] [2023-12-21 13:22:53,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106754 states. [2023-12-21 13:22:54,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106754 to 106504. [2023-12-21 13:22:54,139 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) [2023-12-21 13:22:54,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106504 states to 106504 states and 132073 transitions. [2023-12-21 13:22:54,275 INFO L78 Accepts]: Start accepts. Automaton has 106504 states and 132073 transitions. Word has length 154 [2023-12-21 13:22:54,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:22:54,275 INFO L495 AbstractCegarLoop]: Abstraction has 106504 states and 132073 transitions. [2023-12-21 13:22:54,275 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) [2023-12-21 13:22:54,275 INFO L276 IsEmpty]: Start isEmpty. Operand 106504 states and 132073 transitions. [2023-12-21 13:22:54,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-12-21 13:22:54,356 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:22:54,356 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, 1] [2023-12-21 13:22:54,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-12-21 13:22:54,356 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:22:54,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:22:54,357 INFO L85 PathProgramCache]: Analyzing trace with hash 442608491, now seen corresponding path program 1 times [2023-12-21 13:22:54,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:22:54,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163605157] [2023-12-21 13:22:54,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:22:54,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:22:54,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:22:54,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:22:54,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:22:54,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163605157] [2023-12-21 13:22:54,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163605157] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:22:54,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:22:54,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 13:22:54,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142972444] [2023-12-21 13:22:54,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:22:54,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 13:22:54,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:22:54,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 13:22:54,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-21 13:22:54,939 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) [2023-12-21 13:22:57,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:22:57,078 INFO L93 Difference]: Finished difference Result 369963 states and 457675 transitions. [2023-12-21 13:22:57,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-21 13:22:57,078 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 [2023-12-21 13:22:57,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:22:57,490 INFO L225 Difference]: With dead ends: 369963 [2023-12-21 13:22:57,490 INFO L226 Difference]: Without dead ends: 332842 [2023-12-21 13:22:57,569 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 [2023-12-21 13:22:57,570 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, 0.9s IncrementalHoareTripleChecker+Time [2023-12-21 13:22:57,570 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2502 Valid, 2552 Invalid, 1897 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1882 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-21 13:22:57,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332842 states. [2023-12-21 13:23:00,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332842 to 106684. [2023-12-21 13:23:00,094 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) [2023-12-21 13:23:00,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106684 states to 106684 states and 132253 transitions. [2023-12-21 13:23:00,464 INFO L78 Accepts]: Start accepts. Automaton has 106684 states and 132253 transitions. Word has length 154 [2023-12-21 13:23:00,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:23:00,464 INFO L495 AbstractCegarLoop]: Abstraction has 106684 states and 132253 transitions. [2023-12-21 13:23:00,464 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) [2023-12-21 13:23:00,464 INFO L276 IsEmpty]: Start isEmpty. Operand 106684 states and 132253 transitions. [2023-12-21 13:23:00,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-12-21 13:23:00,531 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:23:00,531 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] [2023-12-21 13:23:00,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-12-21 13:23:00,531 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:23:00,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:23:00,532 INFO L85 PathProgramCache]: Analyzing trace with hash -1772271988, now seen corresponding path program 1 times [2023-12-21 13:23:00,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:23:00,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495467813] [2023-12-21 13:23:00,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:23:00,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:23:00,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:23:00,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:23:00,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:23:00,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495467813] [2023-12-21 13:23:00,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495467813] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:23:00,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:23:00,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:23:00,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61074377] [2023-12-21 13:23:00,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:23:00,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:23:00,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:23:00,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:23:00,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:23:00,620 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) [2023-12-21 13:23:01,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:23:01,127 INFO L93 Difference]: Finished difference Result 217194 states and 268951 transitions. [2023-12-21 13:23:01,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:23:01,128 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 [2023-12-21 13:23:01,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:23:01,572 INFO L225 Difference]: With dead ends: 217194 [2023-12-21 13:23:01,572 INFO L226 Difference]: Without dead ends: 110545 [2023-12-21 13:23:01,590 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 [2023-12-21 13:23:01,592 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 [2023-12-21 13:23:01,592 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] [2023-12-21 13:23:01,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110545 states. [2023-12-21 13:23:02,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110545 to 102218. [2023-12-21 13:23:02,659 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) [2023-12-21 13:23:03,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102218 states to 102218 states and 125187 transitions. [2023-12-21 13:23:03,035 INFO L78 Accepts]: Start accepts. Automaton has 102218 states and 125187 transitions. Word has length 155 [2023-12-21 13:23:03,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:23:03,035 INFO L495 AbstractCegarLoop]: Abstraction has 102218 states and 125187 transitions. [2023-12-21 13:23:03,036 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) [2023-12-21 13:23:03,036 INFO L276 IsEmpty]: Start isEmpty. Operand 102218 states and 125187 transitions. [2023-12-21 13:23:03,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-12-21 13:23:03,096 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:23:03,096 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] [2023-12-21 13:23:03,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-12-21 13:23:03,097 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:23:03,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:23:03,097 INFO L85 PathProgramCache]: Analyzing trace with hash 1561523587, now seen corresponding path program 1 times [2023-12-21 13:23:03,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:23:03,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861667085] [2023-12-21 13:23:03,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:23:03,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:23:03,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:23:03,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:23:03,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:23:03,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861667085] [2023-12-21 13:23:03,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861667085] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:23:03,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:23:03,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 13:23:03,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792229370] [2023-12-21 13:23:03,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:23:03,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 13:23:03,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:23:03,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 13:23:03,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-21 13:23:03,391 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) [2023-12-21 13:23:05,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:23:05,045 INFO L93 Difference]: Finished difference Result 198850 states and 243949 transitions. [2023-12-21 13:23:05,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-21 13:23:05,046 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 [2023-12-21 13:23:05,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:23:05,194 INFO L225 Difference]: With dead ends: 198850 [2023-12-21 13:23:05,194 INFO L226 Difference]: Without dead ends: 145012 [2023-12-21 13:23:05,236 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=341, Unknown=0, NotChecked=0, Total=462 [2023-12-21 13:23:05,237 INFO L413 NwaCegarLoop]: 493 mSDtfsCounter, 3683 mSDsluCounter, 1918 mSDsCounter, 0 mSdLazyCounter, 1605 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s 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, 1.1s IncrementalHoareTripleChecker+Time [2023-12-21 13:23:05,237 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3683 Valid, 2411 Invalid, 1611 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1605 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-21 13:23:05,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145012 states. [2023-12-21 13:23:06,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145012 to 98909. [2023-12-21 13:23:06,530 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) [2023-12-21 13:23:06,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98909 states to 98909 states and 121270 transitions. [2023-12-21 13:23:06,853 INFO L78 Accepts]: Start accepts. Automaton has 98909 states and 121270 transitions. Word has length 155 [2023-12-21 13:23:06,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:23:06,854 INFO L495 AbstractCegarLoop]: Abstraction has 98909 states and 121270 transitions. [2023-12-21 13:23:06,854 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) [2023-12-21 13:23:06,854 INFO L276 IsEmpty]: Start isEmpty. Operand 98909 states and 121270 transitions. [2023-12-21 13:23:06,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-12-21 13:23:06,918 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:23:06,918 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] [2023-12-21 13:23:06,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-12-21 13:23:06,919 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:23:06,919 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:23:06,919 INFO L85 PathProgramCache]: Analyzing trace with hash 2083301889, now seen corresponding path program 1 times [2023-12-21 13:23:06,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:23:06,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793606405] [2023-12-21 13:23:06,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:23:06,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:23:06,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:23:07,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:23:07,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:23:07,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793606405] [2023-12-21 13:23:07,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793606405] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:23:07,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:23:07,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 13:23:07,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349291205] [2023-12-21 13:23:07,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:23:07,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 13:23:07,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:23:07,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 13:23:07,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:23:07,143 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) [2023-12-21 13:23:07,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:23:07,720 INFO L93 Difference]: Finished difference Result 186409 states and 228076 transitions. [2023-12-21 13:23:07,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 13:23:07,720 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 [2023-12-21 13:23:07,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:23:07,841 INFO L225 Difference]: With dead ends: 186409 [2023-12-21 13:23:07,841 INFO L226 Difference]: Without dead ends: 106881 [2023-12-21 13:23:07,885 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 [2023-12-21 13:23:07,885 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, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:23:07,885 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [361 Valid, 971 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:23:07,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106881 states. [2023-12-21 13:23:08,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106881 to 83058. [2023-12-21 13:23:08,905 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) [2023-12-21 13:23:09,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83058 states to 83058 states and 101348 transitions. [2023-12-21 13:23:09,003 INFO L78 Accepts]: Start accepts. Automaton has 83058 states and 101348 transitions. Word has length 155 [2023-12-21 13:23:09,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:23:09,003 INFO L495 AbstractCegarLoop]: Abstraction has 83058 states and 101348 transitions. [2023-12-21 13:23:09,003 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) [2023-12-21 13:23:09,003 INFO L276 IsEmpty]: Start isEmpty. Operand 83058 states and 101348 transitions. [2023-12-21 13:23:09,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-21 13:23:09,047 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:23:09,047 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] [2023-12-21 13:23:09,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-12-21 13:23:09,048 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:23:09,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:23:09,048 INFO L85 PathProgramCache]: Analyzing trace with hash -1090282220, now seen corresponding path program 1 times [2023-12-21 13:23:09,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:23:09,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746461763] [2023-12-21 13:23:09,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:23:09,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:23:09,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:23:09,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:23:09,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:23:09,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746461763] [2023-12-21 13:23:09,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746461763] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:23:09,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:23:09,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 13:23:09,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958127932] [2023-12-21 13:23:09,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:23:09,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 13:23:09,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:23:09,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 13:23:09,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 13:23:09,163 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) [2023-12-21 13:23:10,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:23:10,058 INFO L93 Difference]: Finished difference Result 142572 states and 173125 transitions. [2023-12-21 13:23:10,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-21 13:23:10,059 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 [2023-12-21 13:23:10,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:23:10,192 INFO L225 Difference]: With dead ends: 142572 [2023-12-21 13:23:10,192 INFO L226 Difference]: Without dead ends: 127094 [2023-12-21 13:23:10,212 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 [2023-12-21 13:23:10,212 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 [2023-12-21 13:23:10,212 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] [2023-12-21 13:23:10,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127094 states. [2023-12-21 13:23:11,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127094 to 83521. [2023-12-21 13:23:11,280 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) [2023-12-21 13:23:11,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83521 states to 83521 states and 101881 transitions. [2023-12-21 13:23:11,374 INFO L78 Accepts]: Start accepts. Automaton has 83521 states and 101881 transitions. Word has length 161 [2023-12-21 13:23:11,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:23:11,375 INFO L495 AbstractCegarLoop]: Abstraction has 83521 states and 101881 transitions. [2023-12-21 13:23:11,375 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) [2023-12-21 13:23:11,375 INFO L276 IsEmpty]: Start isEmpty. Operand 83521 states and 101881 transitions. [2023-12-21 13:23:11,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-21 13:23:11,420 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:23:11,420 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] [2023-12-21 13:23:11,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-12-21 13:23:11,420 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:23:11,421 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:23:11,421 INFO L85 PathProgramCache]: Analyzing trace with hash -530084122, now seen corresponding path program 1 times [2023-12-21 13:23:11,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:23:11,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701339130] [2023-12-21 13:23:11,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:23:11,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:23:11,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:23:11,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:23:11,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:23:11,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701339130] [2023-12-21 13:23:11,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701339130] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:23:11,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:23:11,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:23:11,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585791897] [2023-12-21 13:23:11,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:23:11,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:23:11,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:23:11,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:23:11,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:23:11,463 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) [2023-12-21 13:23:12,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:23:12,088 INFO L93 Difference]: Finished difference Result 163568 states and 199734 transitions. [2023-12-21 13:23:12,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:23:12,088 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 [2023-12-21 13:23:12,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:23:12,170 INFO L225 Difference]: With dead ends: 163568 [2023-12-21 13:23:12,170 INFO L226 Difference]: Without dead ends: 80686 [2023-12-21 13:23:12,205 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 [2023-12-21 13:23:12,205 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 [2023-12-21 13:23:12,206 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] [2023-12-21 13:23:12,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80686 states. [2023-12-21 13:23:12,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80686 to 79946. [2023-12-21 13:23:13,029 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) [2023-12-21 13:23:13,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79946 states to 79946 states and 96584 transitions. [2023-12-21 13:23:13,330 INFO L78 Accepts]: Start accepts. Automaton has 79946 states and 96584 transitions. Word has length 161 [2023-12-21 13:23:13,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:23:13,330 INFO L495 AbstractCegarLoop]: Abstraction has 79946 states and 96584 transitions. [2023-12-21 13:23:13,330 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) [2023-12-21 13:23:13,330 INFO L276 IsEmpty]: Start isEmpty. Operand 79946 states and 96584 transitions. [2023-12-21 13:23:13,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-21 13:23:13,369 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:23:13,369 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] [2023-12-21 13:23:13,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2023-12-21 13:23:13,369 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:23:13,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:23:13,369 INFO L85 PathProgramCache]: Analyzing trace with hash -338625030, now seen corresponding path program 1 times [2023-12-21 13:23:13,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:23:13,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424725237] [2023-12-21 13:23:13,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:23:13,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:23:13,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:23:13,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:23:13,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:23:13,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424725237] [2023-12-21 13:23:13,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424725237] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:23:13,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:23:13,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 13:23:13,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644494497] [2023-12-21 13:23:13,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:23:13,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 13:23:13,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:23:13,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 13:23:13,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 13:23:13,481 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) [2023-12-21 13:23:14,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:23:14,453 INFO L93 Difference]: Finished difference Result 189839 states and 228881 transitions. [2023-12-21 13:23:14,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-21 13:23:14,456 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 [2023-12-21 13:23:14,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:23:14,608 INFO L225 Difference]: With dead ends: 189839 [2023-12-21 13:23:14,608 INFO L226 Difference]: Without dead ends: 163379 [2023-12-21 13:23:14,624 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 [2023-12-21 13:23:14,624 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, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 13:23:14,624 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2798 Valid, 796 Invalid, 592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 570 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 13:23:14,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163379 states. [2023-12-21 13:23:15,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163379 to 80378. [2023-12-21 13:23:15,759 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) [2023-12-21 13:23:15,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80378 states to 80378 states and 97072 transitions. [2023-12-21 13:23:15,849 INFO L78 Accepts]: Start accepts. Automaton has 80378 states and 97072 transitions. Word has length 161 [2023-12-21 13:23:15,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:23:15,849 INFO L495 AbstractCegarLoop]: Abstraction has 80378 states and 97072 transitions. [2023-12-21 13:23:15,849 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) [2023-12-21 13:23:15,849 INFO L276 IsEmpty]: Start isEmpty. Operand 80378 states and 97072 transitions. [2023-12-21 13:23:15,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-21 13:23:15,888 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:23:15,888 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] [2023-12-21 13:23:15,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2023-12-21 13:23:15,889 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:23:15,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:23:15,889 INFO L85 PathProgramCache]: Analyzing trace with hash 1313489836, now seen corresponding path program 1 times [2023-12-21 13:23:15,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:23:15,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585929825] [2023-12-21 13:23:15,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:23:15,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:23:15,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:23:15,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:23:15,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:23:15,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585929825] [2023-12-21 13:23:15,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585929825] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:23:15,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:23:15,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 13:23:15,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027112974] [2023-12-21 13:23:15,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:23:15,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 13:23:15,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:23:15,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 13:23:15,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 13:23:16,000 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) [2023-12-21 13:23:16,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:23:16,878 INFO L93 Difference]: Finished difference Result 173493 states and 209401 transitions. [2023-12-21 13:23:16,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-21 13:23:16,879 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 [2023-12-21 13:23:16,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:23:17,044 INFO L225 Difference]: With dead ends: 173493 [2023-12-21 13:23:17,044 INFO L226 Difference]: Without dead ends: 159151 [2023-12-21 13:23:17,093 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 [2023-12-21 13:23:17,094 INFO L413 NwaCegarLoop]: 257 mSDtfsCounter, 2902 mSDsluCounter, 464 mSDsCounter, 0 mSdLazyCounter, 517 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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 [2023-12-21 13:23:17,094 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] [2023-12-21 13:23:17,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159151 states. [2023-12-21 13:23:18,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159151 to 80889. [2023-12-21 13:23:18,414 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) [2023-12-21 13:23:18,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80889 states to 80889 states and 97656 transitions. [2023-12-21 13:23:18,679 INFO L78 Accepts]: Start accepts. Automaton has 80889 states and 97656 transitions. Word has length 162 [2023-12-21 13:23:18,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:23:18,679 INFO L495 AbstractCegarLoop]: Abstraction has 80889 states and 97656 transitions. [2023-12-21 13:23:18,680 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) [2023-12-21 13:23:18,680 INFO L276 IsEmpty]: Start isEmpty. Operand 80889 states and 97656 transitions. [2023-12-21 13:23:18,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2023-12-21 13:23:18,718 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:23:18,719 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] [2023-12-21 13:23:18,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2023-12-21 13:23:18,719 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:23:18,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:23:18,719 INFO L85 PathProgramCache]: Analyzing trace with hash -609012045, now seen corresponding path program 1 times [2023-12-21 13:23:18,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:23:18,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831445739] [2023-12-21 13:23:18,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:23:18,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:23:18,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:23:18,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:23:18,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:23:18,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831445739] [2023-12-21 13:23:18,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831445739] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:23:18,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:23:18,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 13:23:18,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567772322] [2023-12-21 13:23:18,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:23:18,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 13:23:18,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:23:18,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 13:23:18,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 13:23:18,827 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) [2023-12-21 13:23:19,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:23:19,398 INFO L93 Difference]: Finished difference Result 149655 states and 180721 transitions. [2023-12-21 13:23:19,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-21 13:23:19,399 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 [2023-12-21 13:23:19,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:23:19,534 INFO L225 Difference]: With dead ends: 149655 [2023-12-21 13:23:19,534 INFO L226 Difference]: Without dead ends: 124018 [2023-12-21 13:23:19,827 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 [2023-12-21 13:23:19,828 INFO L413 NwaCegarLoop]: 244 mSDtfsCounter, 2708 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 364 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 13:23:19,828 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2708 Valid, 567 Invalid, 393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 364 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 13:23:19,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124018 states. [2023-12-21 13:23:20,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124018 to 81021. [2023-12-21 13:23:20,844 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) [2023-12-21 13:23:20,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81021 states to 81021 states and 97799 transitions. [2023-12-21 13:23:20,959 INFO L78 Accepts]: Start accepts. Automaton has 81021 states and 97799 transitions. Word has length 163 [2023-12-21 13:23:20,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:23:20,959 INFO L495 AbstractCegarLoop]: Abstraction has 81021 states and 97799 transitions. [2023-12-21 13:23:20,959 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) [2023-12-21 13:23:20,960 INFO L276 IsEmpty]: Start isEmpty. Operand 81021 states and 97799 transitions. [2023-12-21 13:23:21,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2023-12-21 13:23:21,002 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:23:21,002 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] [2023-12-21 13:23:21,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2023-12-21 13:23:21,002 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:23:21,003 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:23:21,003 INFO L85 PathProgramCache]: Analyzing trace with hash -1145598337, now seen corresponding path program 1 times [2023-12-21 13:23:21,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:23:21,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136744446] [2023-12-21 13:23:21,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:23:21,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:23:21,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:23:21,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:23:21,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:23:21,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136744446] [2023-12-21 13:23:21,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136744446] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:23:21,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:23:21,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 13:23:21,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252527544] [2023-12-21 13:23:21,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:23:21,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 13:23:21,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:23:21,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 13:23:21,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:23:21,074 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) [2023-12-21 13:23:21,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:23:21,685 INFO L93 Difference]: Finished difference Result 169738 states and 205110 transitions. [2023-12-21 13:23:21,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 13:23:21,686 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 [2023-12-21 13:23:21,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:23:22,128 INFO L225 Difference]: With dead ends: 169738 [2023-12-21 13:23:22,128 INFO L226 Difference]: Without dead ends: 149238 [2023-12-21 13:23:22,164 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 [2023-12-21 13:23:22,164 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 [2023-12-21 13:23:22,165 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] [2023-12-21 13:23:22,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149238 states. [2023-12-21 13:23:23,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149238 to 82513. [2023-12-21 13:23:23,286 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) [2023-12-21 13:23:23,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82513 states to 82513 states and 99392 transitions. [2023-12-21 13:23:23,382 INFO L78 Accepts]: Start accepts. Automaton has 82513 states and 99392 transitions. Word has length 163 [2023-12-21 13:23:23,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:23:23,382 INFO L495 AbstractCegarLoop]: Abstraction has 82513 states and 99392 transitions. [2023-12-21 13:23:23,382 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) [2023-12-21 13:23:23,382 INFO L276 IsEmpty]: Start isEmpty. Operand 82513 states and 99392 transitions. [2023-12-21 13:23:23,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2023-12-21 13:23:23,425 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:23:23,425 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] [2023-12-21 13:23:23,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2023-12-21 13:23:23,426 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:23:23,426 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:23:23,426 INFO L85 PathProgramCache]: Analyzing trace with hash -1292420287, now seen corresponding path program 1 times [2023-12-21 13:23:23,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:23:23,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843157538] [2023-12-21 13:23:23,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:23:23,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:23:23,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:23:23,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:23:23,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:23:23,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843157538] [2023-12-21 13:23:23,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843157538] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:23:23,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:23:23,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 13:23:23,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145917305] [2023-12-21 13:23:23,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:23:23,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 13:23:23,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:23:23,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 13:23:23,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:23:23,515 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) [2023-12-21 13:23:24,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:23:24,444 INFO L93 Difference]: Finished difference Result 230419 states and 277840 transitions. [2023-12-21 13:23:24,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 13:23:24,444 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 [2023-12-21 13:23:24,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:23:24,622 INFO L225 Difference]: With dead ends: 230419 [2023-12-21 13:23:24,622 INFO L226 Difference]: Without dead ends: 149428 [2023-12-21 13:23:24,677 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 [2023-12-21 13:23:24,677 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 [2023-12-21 13:23:24,677 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] [2023-12-21 13:23:24,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149428 states. [2023-12-21 13:23:26,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149428 to 81900. [2023-12-21 13:23:26,236 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) [2023-12-21 13:23:26,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81900 states to 81900 states and 97304 transitions. [2023-12-21 13:23:26,546 INFO L78 Accepts]: Start accepts. Automaton has 81900 states and 97304 transitions. Word has length 163 [2023-12-21 13:23:26,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:23:26,560 INFO L495 AbstractCegarLoop]: Abstraction has 81900 states and 97304 transitions. [2023-12-21 13:23:26,560 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) [2023-12-21 13:23:26,560 INFO L276 IsEmpty]: Start isEmpty. Operand 81900 states and 97304 transitions. [2023-12-21 13:23:26,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2023-12-21 13:23:26,623 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:23:26,623 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] [2023-12-21 13:23:26,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2023-12-21 13:23:26,624 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:23:26,625 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:23:26,625 INFO L85 PathProgramCache]: Analyzing trace with hash -2045208397, now seen corresponding path program 1 times [2023-12-21 13:23:26,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:23:26,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325685056] [2023-12-21 13:23:26,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:23:26,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:23:26,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:23:26,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:23:26,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:23:26,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325685056] [2023-12-21 13:23:26,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325685056] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:23:26,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:23:26,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 13:23:26,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011128812] [2023-12-21 13:23:26,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:23:26,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 13:23:26,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:23:26,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 13:23:26,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:23:26,740 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) [2023-12-21 13:23:27,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:23:27,614 INFO L93 Difference]: Finished difference Result 220447 states and 262713 transitions. [2023-12-21 13:23:27,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 13:23:27,620 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 [2023-12-21 13:23:27,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:23:27,786 INFO L225 Difference]: With dead ends: 220447 [2023-12-21 13:23:27,786 INFO L226 Difference]: Without dead ends: 140166 [2023-12-21 13:23:27,835 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 [2023-12-21 13:23:27,836 INFO L413 NwaCegarLoop]: 253 mSDtfsCounter, 1181 mSDsluCounter, 423 mSDsCounter, 0 mSdLazyCounter, 350 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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 [2023-12-21 13:23:27,836 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] [2023-12-21 13:23:27,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140166 states. [2023-12-21 13:23:28,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140166 to 80844. [2023-12-21 13:23:28,910 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) [2023-12-21 13:23:28,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80844 states to 80844 states and 95527 transitions. [2023-12-21 13:23:28,997 INFO L78 Accepts]: Start accepts. Automaton has 80844 states and 95527 transitions. Word has length 164 [2023-12-21 13:23:28,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:23:28,997 INFO L495 AbstractCegarLoop]: Abstraction has 80844 states and 95527 transitions. [2023-12-21 13:23:28,997 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) [2023-12-21 13:23:28,997 INFO L276 IsEmpty]: Start isEmpty. Operand 80844 states and 95527 transitions. [2023-12-21 13:23:29,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2023-12-21 13:23:29,036 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:23:29,036 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:23:29,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2023-12-21 13:23:29,036 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:23:29,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:23:29,036 INFO L85 PathProgramCache]: Analyzing trace with hash -180972713, now seen corresponding path program 1 times [2023-12-21 13:23:29,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:23:29,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922772294] [2023-12-21 13:23:29,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:23:29,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:23:29,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:23:29,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:23:29,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:23:29,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922772294] [2023-12-21 13:23:29,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922772294] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:23:29,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:23:29,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:23:29,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735636863] [2023-12-21 13:23:29,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:23:29,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:23:29,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:23:29,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:23:29,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:23:29,087 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) [2023-12-21 13:23:29,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:23:29,335 INFO L93 Difference]: Finished difference Result 121277 states and 143305 transitions. [2023-12-21 13:23:29,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:23:29,336 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 [2023-12-21 13:23:29,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:23:29,668 INFO L225 Difference]: With dead ends: 121277 [2023-12-21 13:23:29,673 INFO L226 Difference]: Without dead ends: 91064 [2023-12-21 13:23:29,698 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 [2023-12-21 13:23:29,699 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 [2023-12-21 13:23:29,699 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] [2023-12-21 13:23:29,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91064 states. [2023-12-21 13:23:30,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91064 to 77016. [2023-12-21 13:23:30,600 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) [2023-12-21 13:23:30,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77016 states to 77016 states and 90997 transitions. [2023-12-21 13:23:30,688 INFO L78 Accepts]: Start accepts. Automaton has 77016 states and 90997 transitions. Word has length 164 [2023-12-21 13:23:30,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:23:30,689 INFO L495 AbstractCegarLoop]: Abstraction has 77016 states and 90997 transitions. [2023-12-21 13:23:30,689 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) [2023-12-21 13:23:30,689 INFO L276 IsEmpty]: Start isEmpty. Operand 77016 states and 90997 transitions. [2023-12-21 13:23:30,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2023-12-21 13:23:30,725 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:23:30,725 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] [2023-12-21 13:23:30,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2023-12-21 13:23:30,726 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:23:30,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:23:30,726 INFO L85 PathProgramCache]: Analyzing trace with hash -1104838702, now seen corresponding path program 1 times [2023-12-21 13:23:30,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:23:30,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396185949] [2023-12-21 13:23:30,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:23:30,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:23:30,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:23:30,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:23:30,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:23:30,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396185949] [2023-12-21 13:23:30,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396185949] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:23:30,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:23:30,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:23:30,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781243396] [2023-12-21 13:23:30,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:23:30,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:23:30,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:23:30,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:23:30,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:23:30,768 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) [2023-12-21 13:23:31,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:23:31,261 INFO L93 Difference]: Finished difference Result 141143 states and 167151 transitions. [2023-12-21 13:23:31,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:23:31,261 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 [2023-12-21 13:23:31,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:23:31,353 INFO L225 Difference]: With dead ends: 141143 [2023-12-21 13:23:31,353 INFO L226 Difference]: Without dead ends: 98156 [2023-12-21 13:23:31,389 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 [2023-12-21 13:23:31,390 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 [2023-12-21 13:23:31,390 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] [2023-12-21 13:23:31,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98156 states. [2023-12-21 13:23:32,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98156 to 69975. [2023-12-21 13:23:32,362 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) [2023-12-21 13:23:32,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69975 states to 69975 states and 82723 transitions. [2023-12-21 13:23:32,441 INFO L78 Accepts]: Start accepts. Automaton has 69975 states and 82723 transitions. Word has length 164 [2023-12-21 13:23:32,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:23:32,441 INFO L495 AbstractCegarLoop]: Abstraction has 69975 states and 82723 transitions. [2023-12-21 13:23:32,442 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) [2023-12-21 13:23:32,442 INFO L276 IsEmpty]: Start isEmpty. Operand 69975 states and 82723 transitions. [2023-12-21 13:23:32,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2023-12-21 13:23:32,473 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:23:32,473 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, 1, 1] [2023-12-21 13:23:32,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2023-12-21 13:23:32,473 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:23:32,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:23:32,473 INFO L85 PathProgramCache]: Analyzing trace with hash -545798544, now seen corresponding path program 1 times [2023-12-21 13:23:32,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:23:32,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434788411] [2023-12-21 13:23:32,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:23:32,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:23:32,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:23:32,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:23:32,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:23:32,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434788411] [2023-12-21 13:23:32,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434788411] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:23:32,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:23:32,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 13:23:32,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767199812] [2023-12-21 13:23:32,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:23:32,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 13:23:32,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:23:32,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 13:23:32,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:23:32,544 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) [2023-12-21 13:23:32,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:23:32,988 INFO L93 Difference]: Finished difference Result 156862 states and 186189 transitions. [2023-12-21 13:23:32,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 13:23:32,989 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 [2023-12-21 13:23:32,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:23:33,370 INFO L225 Difference]: With dead ends: 156862 [2023-12-21 13:23:33,370 INFO L226 Difference]: Without dead ends: 127332 [2023-12-21 13:23:33,401 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 [2023-12-21 13:23:33,402 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, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 13:23:33,402 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1113 Valid, 565 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 13:23:33,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127332 states. [2023-12-21 13:23:34,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127332 to 70131. [2023-12-21 13:23:34,278 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) [2023-12-21 13:23:34,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70131 states to 70131 states and 82749 transitions. [2023-12-21 13:23:34,520 INFO L78 Accepts]: Start accepts. Automaton has 70131 states and 82749 transitions. Word has length 165 [2023-12-21 13:23:34,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:23:34,521 INFO L495 AbstractCegarLoop]: Abstraction has 70131 states and 82749 transitions. [2023-12-21 13:23:34,521 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) [2023-12-21 13:23:34,521 INFO L276 IsEmpty]: Start isEmpty. Operand 70131 states and 82749 transitions. [2023-12-21 13:23:34,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2023-12-21 13:23:34,551 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:23:34,551 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] [2023-12-21 13:23:34,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2023-12-21 13:23:34,551 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:23:34,552 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:23:34,552 INFO L85 PathProgramCache]: Analyzing trace with hash -1612530717, now seen corresponding path program 1 times [2023-12-21 13:23:34,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:23:34,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720737595] [2023-12-21 13:23:34,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:23:34,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:23:34,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:23:34,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:23:34,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:23:34,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720737595] [2023-12-21 13:23:34,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720737595] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:23:34,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:23:34,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:23:34,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389958469] [2023-12-21 13:23:34,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:23:34,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:23:34,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:23:34,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:23:34,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:23:34,592 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) [2023-12-21 13:23:34,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:23:34,848 INFO L93 Difference]: Finished difference Result 123156 states and 145276 transitions. [2023-12-21 13:23:34,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:23:34,852 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 [2023-12-21 13:23:34,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:23:34,944 INFO L225 Difference]: With dead ends: 123156 [2023-12-21 13:23:34,944 INFO L226 Difference]: Without dead ends: 92745 [2023-12-21 13:23:34,978 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 [2023-12-21 13:23:34,979 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 [2023-12-21 13:23:34,979 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] [2023-12-21 13:23:35,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92745 states. [2023-12-21 13:23:35,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92745 to 75893. [2023-12-21 13:23:35,947 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) [2023-12-21 13:23:36,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75893 states to 75893 states and 89414 transitions. [2023-12-21 13:23:36,040 INFO L78 Accepts]: Start accepts. Automaton has 75893 states and 89414 transitions. Word has length 165 [2023-12-21 13:23:36,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:23:36,041 INFO L495 AbstractCegarLoop]: Abstraction has 75893 states and 89414 transitions. [2023-12-21 13:23:36,041 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) [2023-12-21 13:23:36,041 INFO L276 IsEmpty]: Start isEmpty. Operand 75893 states and 89414 transitions. [2023-12-21 13:23:36,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2023-12-21 13:23:36,074 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:23:36,074 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] [2023-12-21 13:23:36,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2023-12-21 13:23:36,074 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:23:36,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:23:36,075 INFO L85 PathProgramCache]: Analyzing trace with hash 17808513, now seen corresponding path program 1 times [2023-12-21 13:23:36,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:23:36,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743101995] [2023-12-21 13:23:36,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:23:36,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:23:36,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:23:36,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:23:36,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:23:36,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743101995] [2023-12-21 13:23:36,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743101995] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:23:36,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:23:36,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:23:36,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740700117] [2023-12-21 13:23:36,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:23:36,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:23:36,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:23:36,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:23:36,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:23:36,115 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) [2023-12-21 13:23:36,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:23:36,400 INFO L93 Difference]: Finished difference Result 141362 states and 166877 transitions. [2023-12-21 13:23:36,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:23:36,401 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 [2023-12-21 13:23:36,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:23:36,825 INFO L225 Difference]: With dead ends: 141362 [2023-12-21 13:23:36,825 INFO L226 Difference]: Without dead ends: 99232 [2023-12-21 13:23:36,856 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 [2023-12-21 13:23:36,857 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, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:23:36,857 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [287 Valid, 586 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:23:36,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99232 states. [2023-12-21 13:23:37,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99232 to 70753. [2023-12-21 13:23:37,660 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) [2023-12-21 13:23:37,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70753 states to 70753 states and 83322 transitions. [2023-12-21 13:23:37,742 INFO L78 Accepts]: Start accepts. Automaton has 70753 states and 83322 transitions. Word has length 166 [2023-12-21 13:23:37,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:23:37,742 INFO L495 AbstractCegarLoop]: Abstraction has 70753 states and 83322 transitions. [2023-12-21 13:23:37,742 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) [2023-12-21 13:23:37,742 INFO L276 IsEmpty]: Start isEmpty. Operand 70753 states and 83322 transitions. [2023-12-21 13:23:37,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2023-12-21 13:23:37,770 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:23:37,770 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, 1] [2023-12-21 13:23:37,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2023-12-21 13:23:37,770 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:23:37,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:23:37,771 INFO L85 PathProgramCache]: Analyzing trace with hash -1655108088, now seen corresponding path program 1 times [2023-12-21 13:23:37,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:23:37,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199080296] [2023-12-21 13:23:37,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:23:37,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:23:37,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:23:38,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:23:38,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:23:38,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199080296] [2023-12-21 13:23:38,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199080296] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:23:38,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:23:38,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 13:23:38,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254125156] [2023-12-21 13:23:38,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:23:38,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 13:23:38,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:23:38,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 13:23:38,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-21 13:23:38,309 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) [2023-12-21 13:23:39,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:23:39,688 INFO L93 Difference]: Finished difference Result 190349 states and 224922 transitions. [2023-12-21 13:23:39,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-21 13:23:39,688 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 [2023-12-21 13:23:39,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:23:39,833 INFO L225 Difference]: With dead ends: 190349 [2023-12-21 13:23:39,834 INFO L226 Difference]: Without dead ends: 161992 [2023-12-21 13:23:39,853 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=225, Unknown=0, NotChecked=0, Total=306 [2023-12-21 13:23:39,854 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 [2023-12-21 13:23:39,854 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] [2023-12-21 13:23:39,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161992 states. [2023-12-21 13:23:40,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161992 to 71667. [2023-12-21 13:23:40,905 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) [2023-12-21 13:23:40,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71667 states to 71667 states and 84143 transitions. [2023-12-21 13:23:40,994 INFO L78 Accepts]: Start accepts. Automaton has 71667 states and 84143 transitions. Word has length 167 [2023-12-21 13:23:40,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:23:40,994 INFO L495 AbstractCegarLoop]: Abstraction has 71667 states and 84143 transitions. [2023-12-21 13:23:40,994 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) [2023-12-21 13:23:40,994 INFO L276 IsEmpty]: Start isEmpty. Operand 71667 states and 84143 transitions. [2023-12-21 13:23:41,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2023-12-21 13:23:41,023 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:23:41,023 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] [2023-12-21 13:23:41,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2023-12-21 13:23:41,023 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:23:41,023 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:23:41,023 INFO L85 PathProgramCache]: Analyzing trace with hash -2022704250, now seen corresponding path program 1 times [2023-12-21 13:23:41,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:23:41,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968158200] [2023-12-21 13:23:41,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:23:41,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:23:41,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:23:41,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:23:41,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:23:41,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968158200] [2023-12-21 13:23:41,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968158200] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:23:41,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:23:41,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:23:41,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526621391] [2023-12-21 13:23:41,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:23:41,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:23:41,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:23:41,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:23:41,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:23:41,064 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) [2023-12-21 13:23:41,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:23:41,303 INFO L93 Difference]: Finished difference Result 109306 states and 129024 transitions. [2023-12-21 13:23:41,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:23:41,304 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 [2023-12-21 13:23:41,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:23:41,391 INFO L225 Difference]: With dead ends: 109306 [2023-12-21 13:23:41,391 INFO L226 Difference]: Without dead ends: 90234 [2023-12-21 13:23:41,423 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 [2023-12-21 13:23:41,423 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, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:23:41,424 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 892 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:23:41,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90234 states. [2023-12-21 13:23:42,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90234 to 75854. [2023-12-21 13:23:42,415 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) [2023-12-21 13:23:42,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75854 states to 75854 states and 89326 transitions. [2023-12-21 13:23:42,506 INFO L78 Accepts]: Start accepts. Automaton has 75854 states and 89326 transitions. Word has length 167 [2023-12-21 13:23:42,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:23:42,507 INFO L495 AbstractCegarLoop]: Abstraction has 75854 states and 89326 transitions. [2023-12-21 13:23:42,507 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) [2023-12-21 13:23:42,507 INFO L276 IsEmpty]: Start isEmpty. Operand 75854 states and 89326 transitions. [2023-12-21 13:23:42,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2023-12-21 13:23:42,536 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:23:42,537 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] [2023-12-21 13:23:42,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2023-12-21 13:23:42,537 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:23:42,537 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:23:42,537 INFO L85 PathProgramCache]: Analyzing trace with hash -2116946000, now seen corresponding path program 1 times [2023-12-21 13:23:42,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:23:42,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792099362] [2023-12-21 13:23:42,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:23:42,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:23:42,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:23:43,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:23:43,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:23:43,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792099362] [2023-12-21 13:23:43,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792099362] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:23:43,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:23:43,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 13:23:43,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884362911] [2023-12-21 13:23:43,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:23:43,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 13:23:43,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:23:43,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 13:23:43,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-12-21 13:23:43,021 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) [2023-12-21 13:23:44,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:23:44,114 INFO L93 Difference]: Finished difference Result 201488 states and 238429 transitions. [2023-12-21 13:23:44,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-21 13:23:44,115 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 [2023-12-21 13:23:44,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:23:44,298 INFO L225 Difference]: With dead ends: 201488 [2023-12-21 13:23:44,298 INFO L226 Difference]: Without dead ends: 172175 [2023-12-21 13:23:44,355 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 [2023-12-21 13:23:44,356 INFO L413 NwaCegarLoop]: 364 mSDtfsCounter, 1588 mSDsluCounter, 1536 mSDsCounter, 0 mSdLazyCounter, 1230 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 13:23:44,356 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1588 Valid, 1900 Invalid, 1235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1230 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 13:23:44,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172175 states. [2023-12-21 13:23:45,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172175 to 78152. [2023-12-21 13:23:45,730 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) [2023-12-21 13:23:45,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78152 states to 78152 states and 91818 transitions. [2023-12-21 13:23:45,825 INFO L78 Accepts]: Start accepts. Automaton has 78152 states and 91818 transitions. Word has length 168 [2023-12-21 13:23:45,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:23:45,825 INFO L495 AbstractCegarLoop]: Abstraction has 78152 states and 91818 transitions. [2023-12-21 13:23:45,826 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) [2023-12-21 13:23:45,826 INFO L276 IsEmpty]: Start isEmpty. Operand 78152 states and 91818 transitions. [2023-12-21 13:23:45,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2023-12-21 13:23:45,857 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:23:45,858 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] [2023-12-21 13:23:45,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2023-12-21 13:23:45,858 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:23:45,858 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:23:45,858 INFO L85 PathProgramCache]: Analyzing trace with hash 1370599380, now seen corresponding path program 1 times [2023-12-21 13:23:45,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:23:45,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834795489] [2023-12-21 13:23:45,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:23:45,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:23:45,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:23:45,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:23:45,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:23:45,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834795489] [2023-12-21 13:23:45,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834795489] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:23:45,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:23:45,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:23:45,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638625208] [2023-12-21 13:23:45,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:23:45,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:23:45,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:23:45,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:23:45,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:23:45,909 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) [2023-12-21 13:23:46,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:23:46,206 INFO L93 Difference]: Finished difference Result 147397 states and 174286 transitions. [2023-12-21 13:23:46,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:23:46,206 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 [2023-12-21 13:23:46,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:23:46,598 INFO L225 Difference]: With dead ends: 147397 [2023-12-21 13:23:46,598 INFO L226 Difference]: Without dead ends: 116273 [2023-12-21 13:23:46,626 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 [2023-12-21 13:23:46,627 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 [2023-12-21 13:23:46,627 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] [2023-12-21 13:23:46,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116273 states. [2023-12-21 13:23:47,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116273 to 86836. [2023-12-21 13:23:47,585 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) [2023-12-21 13:23:47,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86836 states to 86836 states and 102091 transitions. [2023-12-21 13:23:47,890 INFO L78 Accepts]: Start accepts. Automaton has 86836 states and 102091 transitions. Word has length 168 [2023-12-21 13:23:47,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:23:47,890 INFO L495 AbstractCegarLoop]: Abstraction has 86836 states and 102091 transitions. [2023-12-21 13:23:47,890 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) [2023-12-21 13:23:47,890 INFO L276 IsEmpty]: Start isEmpty. Operand 86836 states and 102091 transitions. [2023-12-21 13:23:47,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2023-12-21 13:23:47,931 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:23:47,931 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] [2023-12-21 13:23:47,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2023-12-21 13:23:47,931 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:23:47,932 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:23:47,932 INFO L85 PathProgramCache]: Analyzing trace with hash 225633322, now seen corresponding path program 1 times [2023-12-21 13:23:47,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:23:47,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443834932] [2023-12-21 13:23:47,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:23:47,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:23:47,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:23:47,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:23:47,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:23:47,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443834932] [2023-12-21 13:23:47,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443834932] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:23:47,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:23:47,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:23:47,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977302778] [2023-12-21 13:23:47,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:23:47,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:23:47,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:23:47,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:23:47,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:23:47,976 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) [2023-12-21 13:23:48,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:23:48,313 INFO L93 Difference]: Finished difference Result 166525 states and 196059 transitions. [2023-12-21 13:23:48,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:23:48,313 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 [2023-12-21 13:23:48,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:23:48,469 INFO L225 Difference]: With dead ends: 166525 [2023-12-21 13:23:48,469 INFO L226 Difference]: Without dead ends: 131865 [2023-12-21 13:23:48,516 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 [2023-12-21 13:23:48,517 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 [2023-12-21 13:23:48,517 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] [2023-12-21 13:23:48,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131865 states. [2023-12-21 13:23:49,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131865 to 98434. [2023-12-21 13:23:49,777 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) [2023-12-21 13:23:50,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98434 states to 98434 states and 114857 transitions. [2023-12-21 13:23:50,118 INFO L78 Accepts]: Start accepts. Automaton has 98434 states and 114857 transitions. Word has length 169 [2023-12-21 13:23:50,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:23:50,118 INFO L495 AbstractCegarLoop]: Abstraction has 98434 states and 114857 transitions. [2023-12-21 13:23:50,118 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) [2023-12-21 13:23:50,118 INFO L276 IsEmpty]: Start isEmpty. Operand 98434 states and 114857 transitions. [2023-12-21 13:23:50,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2023-12-21 13:23:50,148 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:23:50,148 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] [2023-12-21 13:23:50,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2023-12-21 13:23:50,148 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:23:50,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:23:50,148 INFO L85 PathProgramCache]: Analyzing trace with hash 849933439, now seen corresponding path program 1 times [2023-12-21 13:23:50,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:23:50,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774265079] [2023-12-21 13:23:50,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:23:50,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:23:50,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:23:50,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:23:50,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:23:50,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774265079] [2023-12-21 13:23:50,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774265079] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:23:50,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:23:50,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:23:50,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738709503] [2023-12-21 13:23:50,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:23:50,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:23:50,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:23:50,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:23:50,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:23:50,200 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) [2023-12-21 13:23:50,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:23:50,546 INFO L93 Difference]: Finished difference Result 163538 states and 191005 transitions. [2023-12-21 13:23:50,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:23:50,546 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 [2023-12-21 13:23:50,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:23:50,689 INFO L225 Difference]: With dead ends: 163538 [2023-12-21 13:23:50,689 INFO L226 Difference]: Without dead ends: 129844 [2023-12-21 13:23:50,735 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 [2023-12-21 13:23:50,736 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 [2023-12-21 13:23:50,736 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] [2023-12-21 13:23:50,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129844 states. [2023-12-21 13:23:52,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129844 to 105909. [2023-12-21 13:23:52,184 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) [2023-12-21 13:23:52,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105909 states to 105909 states and 123102 transitions. [2023-12-21 13:23:52,390 INFO L78 Accepts]: Start accepts. Automaton has 105909 states and 123102 transitions. Word has length 169 [2023-12-21 13:23:52,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:23:52,390 INFO L495 AbstractCegarLoop]: Abstraction has 105909 states and 123102 transitions. [2023-12-21 13:23:52,390 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) [2023-12-21 13:23:52,390 INFO L276 IsEmpty]: Start isEmpty. Operand 105909 states and 123102 transitions. [2023-12-21 13:23:52,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2023-12-21 13:23:52,440 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:23:52,440 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] [2023-12-21 13:23:52,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2023-12-21 13:23:52,440 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:23:52,441 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:23:52,441 INFO L85 PathProgramCache]: Analyzing trace with hash 1576257196, now seen corresponding path program 1 times [2023-12-21 13:23:52,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:23:52,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015736722] [2023-12-21 13:23:52,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:23:52,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:23:52,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:23:53,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:23:53,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:23:53,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015736722] [2023-12-21 13:23:53,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015736722] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:23:53,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:23:53,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 13:23:53,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031410731] [2023-12-21 13:23:53,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:23:53,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 13:23:53,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:23:53,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 13:23:53,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-21 13:23:53,129 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) [2023-12-21 13:23:54,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:23:54,713 INFO L93 Difference]: Finished difference Result 253329 states and 295505 transitions. [2023-12-21 13:23:54,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-21 13:23:54,713 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 [2023-12-21 13:23:54,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:23:54,989 INFO L225 Difference]: With dead ends: 253329 [2023-12-21 13:23:54,989 INFO L226 Difference]: Without dead ends: 208977 [2023-12-21 13:23:55,047 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 [2023-12-21 13:23:55,048 INFO L413 NwaCegarLoop]: 351 mSDtfsCounter, 1591 mSDsluCounter, 2027 mSDsCounter, 0 mSdLazyCounter, 1475 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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, 0.7s IncrementalHoareTripleChecker+Time [2023-12-21 13:23:55,048 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1591 Valid, 2378 Invalid, 1478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1475 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-21 13:23:55,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208977 states. [2023-12-21 13:23:56,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208977 to 107034. [2023-12-21 13:23:56,531 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) [2023-12-21 13:23:56,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107034 states to 107034 states and 124298 transitions. [2023-12-21 13:23:56,876 INFO L78 Accepts]: Start accepts. Automaton has 107034 states and 124298 transitions. Word has length 170 [2023-12-21 13:23:56,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:23:56,876 INFO L495 AbstractCegarLoop]: Abstraction has 107034 states and 124298 transitions. [2023-12-21 13:23:56,876 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) [2023-12-21 13:23:56,877 INFO L276 IsEmpty]: Start isEmpty. Operand 107034 states and 124298 transitions. [2023-12-21 13:23:56,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-12-21 13:23:56,906 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:23:56,907 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] [2023-12-21 13:23:56,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2023-12-21 13:23:56,907 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:23:56,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:23:56,907 INFO L85 PathProgramCache]: Analyzing trace with hash -1987762722, now seen corresponding path program 1 times [2023-12-21 13:23:56,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:23:56,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351801501] [2023-12-21 13:23:56,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:23:56,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:23:56,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:23:56,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:23:56,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:23:56,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351801501] [2023-12-21 13:23:56,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351801501] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:23:56,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:23:56,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 13:23:56,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945674168] [2023-12-21 13:23:56,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:23:56,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 13:23:56,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:23:56,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 13:23:56,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 13:23:56,964 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) [2023-12-21 13:23:57,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:23:57,986 INFO L93 Difference]: Finished difference Result 275641 states and 321145 transitions. [2023-12-21 13:23:57,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 13:23:57,987 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 [2023-12-21 13:23:57,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:23:58,192 INFO L225 Difference]: With dead ends: 275641 [2023-12-21 13:23:58,192 INFO L226 Difference]: Without dead ends: 192229 [2023-12-21 13:23:58,233 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 [2023-12-21 13:23:58,234 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 [2023-12-21 13:23:58,234 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] [2023-12-21 13:23:58,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192229 states. [2023-12-21 13:23:59,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192229 to 108149. [2023-12-21 13:23:59,700 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) [2023-12-21 13:24:00,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108149 states to 108149 states and 125559 transitions. [2023-12-21 13:24:00,051 INFO L78 Accepts]: Start accepts. Automaton has 108149 states and 125559 transitions. Word has length 172 [2023-12-21 13:24:00,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:24:00,051 INFO L495 AbstractCegarLoop]: Abstraction has 108149 states and 125559 transitions. [2023-12-21 13:24:00,051 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) [2023-12-21 13:24:00,051 INFO L276 IsEmpty]: Start isEmpty. Operand 108149 states and 125559 transitions. [2023-12-21 13:24:00,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-12-21 13:24:00,083 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:24:00,083 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] [2023-12-21 13:24:00,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2023-12-21 13:24:00,084 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:24:00,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:24:00,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1658211133, now seen corresponding path program 1 times [2023-12-21 13:24:00,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:24:00,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461692587] [2023-12-21 13:24:00,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:24:00,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:24:00,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:24:00,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:24:00,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:24:00,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461692587] [2023-12-21 13:24:00,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461692587] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:24:00,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:24:00,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 13:24:00,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043534049] [2023-12-21 13:24:00,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:24:00,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 13:24:00,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:24:00,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 13:24:00,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 13:24:00,252 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) [2023-12-21 13:24:00,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:24:00,489 INFO L93 Difference]: Finished difference Result 113539 states and 131949 transitions. [2023-12-21 13:24:00,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 13:24:00,489 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 [2023-12-21 13:24:00,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:24:00,846 INFO L225 Difference]: With dead ends: 113539 [2023-12-21 13:24:00,846 INFO L226 Difference]: Without dead ends: 108149 [2023-12-21 13:24:00,854 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 [2023-12-21 13:24:00,855 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 [2023-12-21 13:24:00,863 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] [2023-12-21 13:24:00,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108149 states. [2023-12-21 13:24:01,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108149 to 108149. [2023-12-21 13:24:01,764 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) [2023-12-21 13:24:02,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108149 states to 108149 states and 125539 transitions. [2023-12-21 13:24:02,143 INFO L78 Accepts]: Start accepts. Automaton has 108149 states and 125539 transitions. Word has length 172 [2023-12-21 13:24:02,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:24:02,143 INFO L495 AbstractCegarLoop]: Abstraction has 108149 states and 125539 transitions. [2023-12-21 13:24:02,143 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) [2023-12-21 13:24:02,143 INFO L276 IsEmpty]: Start isEmpty. Operand 108149 states and 125539 transitions. [2023-12-21 13:24:02,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-12-21 13:24:02,176 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:24:02,176 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] [2023-12-21 13:24:02,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2023-12-21 13:24:02,176 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:24:02,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:24:02,177 INFO L85 PathProgramCache]: Analyzing trace with hash 2050653760, now seen corresponding path program 1 times [2023-12-21 13:24:02,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:24:02,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299840750] [2023-12-21 13:24:02,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:24:02,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:24:02,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:24:03,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:24:03,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:24:03,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299840750] [2023-12-21 13:24:03,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299840750] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:24:03,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:24:03,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-21 13:24:03,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409261721] [2023-12-21 13:24:03,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:24:03,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-21 13:24:03,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:24:03,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-21 13:24:03,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2023-12-21 13:24:03,013 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) [2023-12-21 13:24:08,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:24:08,359 INFO L93 Difference]: Finished difference Result 294389 states and 341279 transitions. [2023-12-21 13:24:08,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2023-12-21 13:24:08,360 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 [2023-12-21 13:24:08,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:24:08,684 INFO L225 Difference]: With dead ends: 294389 [2023-12-21 13:24:08,684 INFO L226 Difference]: Without dead ends: 273259 [2023-12-21 13:24:08,746 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1689 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1115, Invalid=4435, Unknown=0, NotChecked=0, Total=5550 [2023-12-21 13:24:08,747 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, 2.5s IncrementalHoareTripleChecker+Time [2023-12-21 13:24:08,747 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7562 Valid, 5139 Invalid, 3986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 3933 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-21 13:24:08,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273259 states. [2023-12-21 13:24:10,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273259 to 103740. [2023-12-21 13:24:10,603 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) [2023-12-21 13:24:10,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103740 states to 103740 states and 120477 transitions. [2023-12-21 13:24:10,977 INFO L78 Accepts]: Start accepts. Automaton has 103740 states and 120477 transitions. Word has length 172 [2023-12-21 13:24:10,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:24:10,977 INFO L495 AbstractCegarLoop]: Abstraction has 103740 states and 120477 transitions. [2023-12-21 13:24:10,977 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) [2023-12-21 13:24:10,977 INFO L276 IsEmpty]: Start isEmpty. Operand 103740 states and 120477 transitions. [2023-12-21 13:24:11,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-12-21 13:24:11,007 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:24:11,007 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] [2023-12-21 13:24:11,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2023-12-21 13:24:11,007 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:24:11,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:24:11,008 INFO L85 PathProgramCache]: Analyzing trace with hash 1427704741, now seen corresponding path program 1 times [2023-12-21 13:24:11,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:24:11,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349037115] [2023-12-21 13:24:11,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:24:11,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:24:11,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:24:11,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:24:11,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:24:11,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349037115] [2023-12-21 13:24:11,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349037115] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:24:11,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:24:11,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-21 13:24:11,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486952483] [2023-12-21 13:24:11,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:24:11,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-21 13:24:11,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:24:11,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-21 13:24:11,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2023-12-21 13:24:11,526 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) [2023-12-21 13:24:13,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:24:13,212 INFO L93 Difference]: Finished difference Result 238149 states and 278193 transitions. [2023-12-21 13:24:13,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-21 13:24:13,212 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 [2023-12-21 13:24:13,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:24:13,489 INFO L225 Difference]: With dead ends: 238149 [2023-12-21 13:24:13,489 INFO L226 Difference]: Without dead ends: 217519 [2023-12-21 13:24:13,556 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=148, Invalid=404, Unknown=0, NotChecked=0, Total=552 [2023-12-21 13:24:13,556 INFO L413 NwaCegarLoop]: 457 mSDtfsCounter, 2093 mSDsluCounter, 1813 mSDsCounter, 0 mSdLazyCounter, 1572 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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 [2023-12-21 13:24:13,556 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] [2023-12-21 13:24:13,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217519 states. [2023-12-21 13:24:15,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217519 to 103474. [2023-12-21 13:24:15,199 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) [2023-12-21 13:24:15,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103474 states to 103474 states and 120144 transitions. [2023-12-21 13:24:15,337 INFO L78 Accepts]: Start accepts. Automaton has 103474 states and 120144 transitions. Word has length 172 [2023-12-21 13:24:15,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:24:15,337 INFO L495 AbstractCegarLoop]: Abstraction has 103474 states and 120144 transitions. [2023-12-21 13:24:15,337 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) [2023-12-21 13:24:15,337 INFO L276 IsEmpty]: Start isEmpty. Operand 103474 states and 120144 transitions. [2023-12-21 13:24:15,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-12-21 13:24:15,371 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:24:15,371 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] [2023-12-21 13:24:15,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2023-12-21 13:24:15,371 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:24:15,372 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:24:15,372 INFO L85 PathProgramCache]: Analyzing trace with hash -177376394, now seen corresponding path program 1 times [2023-12-21 13:24:15,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:24:15,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6410694] [2023-12-21 13:24:15,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:24:15,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:24:15,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:24:16,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:24:16,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:24:16,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6410694] [2023-12-21 13:24:16,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6410694] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:24:16,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:24:16,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-21 13:24:16,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092602047] [2023-12-21 13:24:16,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:24:16,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-21 13:24:16,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:24:16,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-21 13:24:16,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2023-12-21 13:24:16,208 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) [2023-12-21 13:24:21,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:24:21,856 INFO L93 Difference]: Finished difference Result 274760 states and 320671 transitions. [2023-12-21 13:24:21,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2023-12-21 13:24:21,857 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 [2023-12-21 13:24:21,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:24:22,214 INFO L225 Difference]: With dead ends: 274760 [2023-12-21 13:24:22,215 INFO L226 Difference]: Without dead ends: 258078 [2023-12-21 13:24:22,279 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1460 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1000, Invalid=3970, Unknown=0, NotChecked=0, Total=4970 [2023-12-21 13:24:22,279 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 [2023-12-21 13:24:22,279 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] [2023-12-21 13:24:22,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258078 states. [2023-12-21 13:24:23,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258078 to 101575. [2023-12-21 13:24:24,044 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) [2023-12-21 13:24:24,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101575 states to 101575 states and 118061 transitions. [2023-12-21 13:24:24,195 INFO L78 Accepts]: Start accepts. Automaton has 101575 states and 118061 transitions. Word has length 172 [2023-12-21 13:24:24,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:24:24,195 INFO L495 AbstractCegarLoop]: Abstraction has 101575 states and 118061 transitions. [2023-12-21 13:24:24,196 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) [2023-12-21 13:24:24,196 INFO L276 IsEmpty]: Start isEmpty. Operand 101575 states and 118061 transitions. [2023-12-21 13:24:24,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-12-21 13:24:24,230 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:24:24,230 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] [2023-12-21 13:24:24,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2023-12-21 13:24:24,230 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:24:24,231 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:24:24,231 INFO L85 PathProgramCache]: Analyzing trace with hash -105693831, now seen corresponding path program 1 times [2023-12-21 13:24:24,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:24:24,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411023191] [2023-12-21 13:24:24,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:24:24,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:24:24,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:24:24,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:24:24,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:24:24,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411023191] [2023-12-21 13:24:24,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411023191] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:24:24,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:24:24,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 13:24:24,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809360536] [2023-12-21 13:24:24,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:24:24,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 13:24:24,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:24:24,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 13:24:24,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 13:24:24,295 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) [2023-12-21 13:24:25,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:24:25,380 INFO L93 Difference]: Finished difference Result 263226 states and 307076 transitions. [2023-12-21 13:24:25,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 13:24:25,380 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 [2023-12-21 13:24:25,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:24:25,652 INFO L225 Difference]: With dead ends: 263226 [2023-12-21 13:24:25,652 INFO L226 Difference]: Without dead ends: 210382 [2023-12-21 13:24:25,697 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 [2023-12-21 13:24:25,698 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, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 13:24:25,698 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [719 Valid, 1026 Invalid, 480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 473 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 13:24:25,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210382 states. [2023-12-21 13:24:27,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210382 to 120868. [2023-12-21 13:24:27,384 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) [2023-12-21 13:24:27,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120868 states to 120868 states and 140286 transitions. [2023-12-21 13:24:27,557 INFO L78 Accepts]: Start accepts. Automaton has 120868 states and 140286 transitions. Word has length 172 [2023-12-21 13:24:27,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:24:27,557 INFO L495 AbstractCegarLoop]: Abstraction has 120868 states and 140286 transitions. [2023-12-21 13:24:27,557 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) [2023-12-21 13:24:27,557 INFO L276 IsEmpty]: Start isEmpty. Operand 120868 states and 140286 transitions. [2023-12-21 13:24:27,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-12-21 13:24:27,591 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:24:27,591 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] [2023-12-21 13:24:27,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2023-12-21 13:24:27,592 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:24:27,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:24:27,592 INFO L85 PathProgramCache]: Analyzing trace with hash -1254381026, now seen corresponding path program 1 times [2023-12-21 13:24:27,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:24:27,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611978166] [2023-12-21 13:24:27,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:24:27,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:24:27,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:24:27,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:24:27,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:24:27,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611978166] [2023-12-21 13:24:27,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611978166] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:24:27,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:24:27,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 13:24:27,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736047504] [2023-12-21 13:24:27,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:24:27,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 13:24:27,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:24:27,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 13:24:27,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 13:24:27,761 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) [2023-12-21 13:24:28,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:24:28,313 INFO L93 Difference]: Finished difference Result 137686 states and 160366 transitions. [2023-12-21 13:24:28,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 13:24:28,313 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 [2023-12-21 13:24:28,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:24:28,448 INFO L225 Difference]: With dead ends: 137686 [2023-12-21 13:24:28,448 INFO L226 Difference]: Without dead ends: 120868 [2023-12-21 13:24:28,478 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 [2023-12-21 13:24:28,478 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 [2023-12-21 13:24:28,478 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] [2023-12-21 13:24:28,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120868 states. [2023-12-21 13:24:29,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120868 to 120868. [2023-12-21 13:24:29,722 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) [2023-12-21 13:24:30,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120868 states to 120868 states and 140230 transitions. [2023-12-21 13:24:30,226 INFO L78 Accepts]: Start accepts. Automaton has 120868 states and 140230 transitions. Word has length 172 [2023-12-21 13:24:30,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:24:30,227 INFO L495 AbstractCegarLoop]: Abstraction has 120868 states and 140230 transitions. [2023-12-21 13:24:30,227 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) [2023-12-21 13:24:30,227 INFO L276 IsEmpty]: Start isEmpty. Operand 120868 states and 140230 transitions. [2023-12-21 13:24:30,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2023-12-21 13:24:30,268 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:24:30,268 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] [2023-12-21 13:24:30,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2023-12-21 13:24:30,269 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:24:30,269 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:24:30,269 INFO L85 PathProgramCache]: Analyzing trace with hash -1187255174, now seen corresponding path program 1 times [2023-12-21 13:24:30,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:24:30,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287447399] [2023-12-21 13:24:30,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:24:30,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:24:30,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:24:30,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:24:30,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:24:30,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287447399] [2023-12-21 13:24:30,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287447399] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:24:30,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:24:30,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 13:24:30,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971875752] [2023-12-21 13:24:30,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:24:30,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 13:24:30,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:24:30,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 13:24:30,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-21 13:24:30,444 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) [2023-12-21 13:24:30,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:24:30,935 INFO L93 Difference]: Finished difference Result 139056 states and 162087 transitions. [2023-12-21 13:24:30,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 13:24:30,936 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 [2023-12-21 13:24:30,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:24:31,444 INFO L225 Difference]: With dead ends: 139056 [2023-12-21 13:24:31,444 INFO L226 Difference]: Without dead ends: 131942 [2023-12-21 13:24:31,454 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 [2023-12-21 13:24:31,455 INFO L413 NwaCegarLoop]: 689 mSDtfsCounter, 1111 mSDsluCounter, 1091 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 13:24:31,456 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1111 Valid, 1780 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 13:24:31,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131942 states. [2023-12-21 13:24:32,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131942 to 128912. [2023-12-21 13:24:32,712 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) [2023-12-21 13:24:32,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128912 states to 128912 states and 149826 transitions. [2023-12-21 13:24:32,880 INFO L78 Accepts]: Start accepts. Automaton has 128912 states and 149826 transitions. Word has length 173 [2023-12-21 13:24:32,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:24:32,880 INFO L495 AbstractCegarLoop]: Abstraction has 128912 states and 149826 transitions. [2023-12-21 13:24:32,880 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) [2023-12-21 13:24:32,880 INFO L276 IsEmpty]: Start isEmpty. Operand 128912 states and 149826 transitions. [2023-12-21 13:24:32,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2023-12-21 13:24:32,913 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:24:32,913 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:24:32,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2023-12-21 13:24:32,913 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:24:32,914 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:24:32,914 INFO L85 PathProgramCache]: Analyzing trace with hash 691149351, now seen corresponding path program 1 times [2023-12-21 13:24:32,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:24:32,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717218502] [2023-12-21 13:24:32,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:24:32,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:24:32,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:24:33,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:24:33,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:24:33,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717218502] [2023-12-21 13:24:33,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717218502] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:24:33,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:24:33,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 13:24:33,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096397261] [2023-12-21 13:24:33,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:24:33,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 13:24:33,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:24:33,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 13:24:33,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-21 13:24:33,037 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) [2023-12-21 13:24:33,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:24:33,784 INFO L93 Difference]: Finished difference Result 146687 states and 171335 transitions. [2023-12-21 13:24:33,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 13:24:33,785 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 [2023-12-21 13:24:33,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:24:33,992 INFO L225 Difference]: With dead ends: 146687 [2023-12-21 13:24:33,992 INFO L226 Difference]: Without dead ends: 138797 [2023-12-21 13:24:34,032 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 [2023-12-21 13:24:34,032 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, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 13:24:34,041 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1086 Valid, 1406 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 13:24:34,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138797 states. [2023-12-21 13:24:35,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138797 to 133795. [2023-12-21 13:24:35,396 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) [2023-12-21 13:24:35,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133795 states to 133795 states and 155754 transitions. [2023-12-21 13:24:35,866 INFO L78 Accepts]: Start accepts. Automaton has 133795 states and 155754 transitions. Word has length 173 [2023-12-21 13:24:35,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:24:35,866 INFO L495 AbstractCegarLoop]: Abstraction has 133795 states and 155754 transitions. [2023-12-21 13:24:35,866 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) [2023-12-21 13:24:35,866 INFO L276 IsEmpty]: Start isEmpty. Operand 133795 states and 155754 transitions. [2023-12-21 13:24:35,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2023-12-21 13:24:35,904 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:24:35,904 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] [2023-12-21 13:24:35,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2023-12-21 13:24:35,904 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:24:35,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:24:35,904 INFO L85 PathProgramCache]: Analyzing trace with hash -9277939, now seen corresponding path program 1 times [2023-12-21 13:24:35,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:24:35,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255120772] [2023-12-21 13:24:35,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:24:35,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:24:35,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:24:36,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:24:36,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:24:36,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255120772] [2023-12-21 13:24:36,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255120772] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:24:36,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:24:36,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 13:24:36,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450064246] [2023-12-21 13:24:36,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:24:36,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 13:24:36,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:24:36,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 13:24:36,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-21 13:24:36,011 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) [2023-12-21 13:24:36,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:24:36,416 INFO L93 Difference]: Finished difference Result 156248 states and 182875 transitions. [2023-12-21 13:24:36,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 13:24:36,416 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 [2023-12-21 13:24:36,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:24:36,582 INFO L225 Difference]: With dead ends: 156248 [2023-12-21 13:24:36,583 INFO L226 Difference]: Without dead ends: 148139 [2023-12-21 13:24:36,904 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 [2023-12-21 13:24:36,905 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 [2023-12-21 13:24:36,905 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] [2023-12-21 13:24:36,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148139 states. [2023-12-21 13:24:38,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148139 to 136308. [2023-12-21 13:24:38,144 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) [2023-12-21 13:24:38,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136308 states to 136308 states and 158734 transitions. [2023-12-21 13:24:38,331 INFO L78 Accepts]: Start accepts. Automaton has 136308 states and 158734 transitions. Word has length 173 [2023-12-21 13:24:38,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:24:38,332 INFO L495 AbstractCegarLoop]: Abstraction has 136308 states and 158734 transitions. [2023-12-21 13:24:38,332 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) [2023-12-21 13:24:38,332 INFO L276 IsEmpty]: Start isEmpty. Operand 136308 states and 158734 transitions. [2023-12-21 13:24:38,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2023-12-21 13:24:38,368 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:24:38,368 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] [2023-12-21 13:24:38,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2023-12-21 13:24:38,368 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:24:38,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:24:38,368 INFO L85 PathProgramCache]: Analyzing trace with hash 138415593, now seen corresponding path program 1 times [2023-12-21 13:24:38,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:24:38,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744539089] [2023-12-21 13:24:38,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:24:38,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:24:38,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:24:38,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:24:38,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:24:38,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744539089] [2023-12-21 13:24:38,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744539089] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:24:38,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:24:38,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 13:24:38,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235313820] [2023-12-21 13:24:38,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:24:38,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 13:24:38,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:24:38,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 13:24:38,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 13:24:38,415 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) [2023-12-21 13:24:39,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:24:39,507 INFO L93 Difference]: Finished difference Result 304131 states and 353727 transitions. [2023-12-21 13:24:39,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 13:24:39,507 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 [2023-12-21 13:24:39,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:24:40,170 INFO L225 Difference]: With dead ends: 304131 [2023-12-21 13:24:40,170 INFO L226 Difference]: Without dead ends: 224229 [2023-12-21 13:24:40,238 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 [2023-12-21 13:24:40,238 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 [2023-12-21 13:24:40,253 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] [2023-12-21 13:24:40,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224229 states. [2023-12-21 13:24:41,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224229 to 133264. [2023-12-21 13:24:41,809 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) [2023-12-21 13:24:42,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133264 states to 133264 states and 155193 transitions. [2023-12-21 13:24:42,245 INFO L78 Accepts]: Start accepts. Automaton has 133264 states and 155193 transitions. Word has length 173 [2023-12-21 13:24:42,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:24:42,245 INFO L495 AbstractCegarLoop]: Abstraction has 133264 states and 155193 transitions. [2023-12-21 13:24:42,245 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) [2023-12-21 13:24:42,245 INFO L276 IsEmpty]: Start isEmpty. Operand 133264 states and 155193 transitions. [2023-12-21 13:24:42,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2023-12-21 13:24:42,272 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:24:42,272 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] [2023-12-21 13:24:42,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2023-12-21 13:24:42,273 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:24:42,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:24:42,273 INFO L85 PathProgramCache]: Analyzing trace with hash 824074468, now seen corresponding path program 1 times [2023-12-21 13:24:42,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:24:42,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162563846] [2023-12-21 13:24:42,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:24:42,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:24:42,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:24:42,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:24:42,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:24:42,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162563846] [2023-12-21 13:24:42,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162563846] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:24:42,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:24:42,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 13:24:42,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171630619] [2023-12-21 13:24:42,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:24:42,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 13:24:42,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:24:42,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 13:24:42,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-21 13:24:42,372 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) [2023-12-21 13:24:43,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:24:43,051 INFO L93 Difference]: Finished difference Result 154340 states and 180621 transitions. [2023-12-21 13:24:43,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 13:24:43,051 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 [2023-12-21 13:24:43,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:24:43,212 INFO L225 Difference]: With dead ends: 154340 [2023-12-21 13:24:43,212 INFO L226 Difference]: Without dead ends: 147157 [2023-12-21 13:24:43,227 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 [2023-12-21 13:24:43,227 INFO L413 NwaCegarLoop]: 655 mSDtfsCounter, 1075 mSDsluCounter, 775 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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 [2023-12-21 13:24:43,227 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] [2023-12-21 13:24:43,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147157 states. [2023-12-21 13:24:44,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147157 to 138933. [2023-12-21 13:24:44,431 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) [2023-12-21 13:24:44,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138933 states to 138933 states and 162022 transitions. [2023-12-21 13:24:44,596 INFO L78 Accepts]: Start accepts. Automaton has 138933 states and 162022 transitions. Word has length 173 [2023-12-21 13:24:44,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:24:44,596 INFO L495 AbstractCegarLoop]: Abstraction has 138933 states and 162022 transitions. [2023-12-21 13:24:44,596 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) [2023-12-21 13:24:44,596 INFO L276 IsEmpty]: Start isEmpty. Operand 138933 states and 162022 transitions. [2023-12-21 13:24:44,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2023-12-21 13:24:44,623 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:24:44,623 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] [2023-12-21 13:24:44,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2023-12-21 13:24:44,623 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:24:44,623 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:24:44,624 INFO L85 PathProgramCache]: Analyzing trace with hash 872306977, now seen corresponding path program 1 times [2023-12-21 13:24:44,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:24:44,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418819918] [2023-12-21 13:24:44,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:24:44,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:24:44,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:24:45,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:24:45,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:24:45,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418819918] [2023-12-21 13:24:45,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418819918] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:24:45,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:24:45,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 13:24:45,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406496408] [2023-12-21 13:24:45,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:24:45,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 13:24:45,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:24:45,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 13:24:45,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-21 13:24:45,075 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) [2023-12-21 13:24:45,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:24:45,502 INFO L93 Difference]: Finished difference Result 167552 states and 196624 transitions. [2023-12-21 13:24:45,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 13:24:45,502 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 [2023-12-21 13:24:45,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:24:45,670 INFO L225 Difference]: With dead ends: 167552 [2023-12-21 13:24:45,670 INFO L226 Difference]: Without dead ends: 155353 [2023-12-21 13:24:45,715 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 [2023-12-21 13:24:45,716 INFO L413 NwaCegarLoop]: 699 mSDtfsCounter, 1173 mSDsluCounter, 762 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 13:24:45,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1173 Valid, 1461 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 13:24:45,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155353 states. [2023-12-21 13:24:47,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155353 to 147273. [2023-12-21 13:24:47,386 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) [2023-12-21 13:24:47,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147273 states to 147273 states and 172040 transitions. [2023-12-21 13:24:47,595 INFO L78 Accepts]: Start accepts. Automaton has 147273 states and 172040 transitions. Word has length 174 [2023-12-21 13:24:47,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:24:47,595 INFO L495 AbstractCegarLoop]: Abstraction has 147273 states and 172040 transitions. [2023-12-21 13:24:47,595 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) [2023-12-21 13:24:47,595 INFO L276 IsEmpty]: Start isEmpty. Operand 147273 states and 172040 transitions. [2023-12-21 13:24:47,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2023-12-21 13:24:47,626 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:24:47,626 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] [2023-12-21 13:24:47,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2023-12-21 13:24:47,626 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:24:47,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:24:47,627 INFO L85 PathProgramCache]: Analyzing trace with hash -1492611802, now seen corresponding path program 1 times [2023-12-21 13:24:47,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:24:47,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22551771] [2023-12-21 13:24:47,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:24:47,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:24:47,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:24:47,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:24:47,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:24:47,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22551771] [2023-12-21 13:24:47,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22551771] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:24:47,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:24:47,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 13:24:47,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510798602] [2023-12-21 13:24:47,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:24:47,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 13:24:47,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:24:47,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 13:24:47,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 13:24:47,676 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) [2023-12-21 13:24:49,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:24:49,560 INFO L93 Difference]: Finished difference Result 488136 states and 572388 transitions. [2023-12-21 13:24:49,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 13:24:49,561 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 [2023-12-21 13:24:49,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:24:50,039 INFO L225 Difference]: With dead ends: 488136 [2023-12-21 13:24:50,039 INFO L226 Difference]: Without dead ends: 347954 [2023-12-21 13:24:50,108 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 [2023-12-21 13:24:50,124 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, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 13:24:50,124 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [705 Valid, 1036 Invalid, 517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 506 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 13:24:50,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347954 states. [2023-12-21 13:24:52,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347954 to 162091. [2023-12-21 13:24:52,569 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) [2023-12-21 13:24:52,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162091 states to 162091 states and 189124 transitions. [2023-12-21 13:24:52,776 INFO L78 Accepts]: Start accepts. Automaton has 162091 states and 189124 transitions. Word has length 174 [2023-12-21 13:24:52,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:24:52,777 INFO L495 AbstractCegarLoop]: Abstraction has 162091 states and 189124 transitions. [2023-12-21 13:24:52,777 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) [2023-12-21 13:24:52,777 INFO L276 IsEmpty]: Start isEmpty. Operand 162091 states and 189124 transitions. [2023-12-21 13:24:52,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2023-12-21 13:24:52,807 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:24:52,807 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] [2023-12-21 13:24:52,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2023-12-21 13:24:52,807 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:24:52,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:24:52,807 INFO L85 PathProgramCache]: Analyzing trace with hash 182854854, now seen corresponding path program 1 times [2023-12-21 13:24:52,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:24:52,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866424394] [2023-12-21 13:24:52,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:24:52,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:24:52,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:24:53,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:24:53,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:24:53,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866424394] [2023-12-21 13:24:53,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866424394] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:24:53,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:24:53,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 13:24:53,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620634417] [2023-12-21 13:24:53,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:24:53,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 13:24:53,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:24:53,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 13:24:53,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-21 13:24:53,284 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) [2023-12-21 13:24:53,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:24:53,961 INFO L93 Difference]: Finished difference Result 191432 states and 224647 transitions. [2023-12-21 13:24:53,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 13:24:53,962 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 [2023-12-21 13:24:53,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:24:54,220 INFO L225 Difference]: With dead ends: 191432 [2023-12-21 13:24:54,220 INFO L226 Difference]: Without dead ends: 171783 [2023-12-21 13:24:54,275 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 [2023-12-21 13:24:54,276 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 [2023-12-21 13:24:54,276 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] [2023-12-21 13:24:54,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171783 states. [2023-12-21 13:24:55,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171783 to 157741. [2023-12-21 13:24:55,962 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) [2023-12-21 13:24:56,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157741 states to 157741 states and 183964 transitions. [2023-12-21 13:24:56,189 INFO L78 Accepts]: Start accepts. Automaton has 157741 states and 183964 transitions. Word has length 174 [2023-12-21 13:24:56,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:24:56,189 INFO L495 AbstractCegarLoop]: Abstraction has 157741 states and 183964 transitions. [2023-12-21 13:24:56,189 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) [2023-12-21 13:24:56,189 INFO L276 IsEmpty]: Start isEmpty. Operand 157741 states and 183964 transitions. [2023-12-21 13:24:56,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2023-12-21 13:24:56,217 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:24:56,217 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] [2023-12-21 13:24:56,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2023-12-21 13:24:56,217 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:24:56,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:24:56,218 INFO L85 PathProgramCache]: Analyzing trace with hash 193836985, now seen corresponding path program 1 times [2023-12-21 13:24:56,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:24:56,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158443407] [2023-12-21 13:24:56,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:24:56,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:24:56,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:24:56,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:24:56,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:24:56,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158443407] [2023-12-21 13:24:56,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158443407] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:24:56,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:24:56,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 13:24:56,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275039112] [2023-12-21 13:24:56,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:24:56,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 13:24:56,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:24:56,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 13:24:56,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-21 13:24:56,323 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) [2023-12-21 13:24:57,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:24:57,019 INFO L93 Difference]: Finished difference Result 189563 states and 222628 transitions. [2023-12-21 13:24:57,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 13:24:57,020 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 [2023-12-21 13:24:57,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:24:57,200 INFO L225 Difference]: With dead ends: 189563 [2023-12-21 13:24:57,200 INFO L226 Difference]: Without dead ends: 171136 [2023-12-21 13:24:57,253 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 [2023-12-21 13:24:57,254 INFO L413 NwaCegarLoop]: 656 mSDtfsCounter, 1125 mSDsluCounter, 1067 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 13:24:57,254 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1125 Valid, 1723 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 13:24:57,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171136 states. [2023-12-21 13:24:58,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171136 to 160633. [2023-12-21 13:24:58,968 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) [2023-12-21 13:24:59,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160633 states to 160633 states and 187472 transitions. [2023-12-21 13:24:59,167 INFO L78 Accepts]: Start accepts. Automaton has 160633 states and 187472 transitions. Word has length 174 [2023-12-21 13:24:59,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:24:59,167 INFO L495 AbstractCegarLoop]: Abstraction has 160633 states and 187472 transitions. [2023-12-21 13:24:59,167 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) [2023-12-21 13:24:59,168 INFO L276 IsEmpty]: Start isEmpty. Operand 160633 states and 187472 transitions. [2023-12-21 13:24:59,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2023-12-21 13:24:59,194 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:24:59,194 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] [2023-12-21 13:24:59,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2023-12-21 13:24:59,194 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:24:59,195 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:24:59,195 INFO L85 PathProgramCache]: Analyzing trace with hash 836599113, now seen corresponding path program 1 times [2023-12-21 13:24:59,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:24:59,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423509635] [2023-12-21 13:24:59,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:24:59,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:24:59,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:24:59,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:24:59,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:24:59,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423509635] [2023-12-21 13:24:59,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423509635] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:24:59,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:24:59,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 13:24:59,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127740294] [2023-12-21 13:24:59,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:24:59,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 13:24:59,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:24:59,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 13:24:59,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-21 13:24:59,667 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) [2023-12-21 13:25:00,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:25:00,076 INFO L93 Difference]: Finished difference Result 194401 states and 228548 transitions. [2023-12-21 13:25:00,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 13:25:00,077 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 [2023-12-21 13:25:00,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:25:00,269 INFO L225 Difference]: With dead ends: 194401 [2023-12-21 13:25:00,269 INFO L226 Difference]: Without dead ends: 169919 [2023-12-21 13:25:00,324 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 [2023-12-21 13:25:00,324 INFO L413 NwaCegarLoop]: 635 mSDtfsCounter, 1123 mSDsluCounter, 745 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 13:25:00,324 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1123 Valid, 1380 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 13:25:00,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169919 states. [2023-12-21 13:25:01,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169919 to 154825. [2023-12-21 13:25:02,028 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) [2023-12-21 13:25:02,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154825 states to 154825 states and 180444 transitions. [2023-12-21 13:25:02,536 INFO L78 Accepts]: Start accepts. Automaton has 154825 states and 180444 transitions. Word has length 174 [2023-12-21 13:25:02,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:25:02,537 INFO L495 AbstractCegarLoop]: Abstraction has 154825 states and 180444 transitions. [2023-12-21 13:25:02,537 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) [2023-12-21 13:25:02,537 INFO L276 IsEmpty]: Start isEmpty. Operand 154825 states and 180444 transitions. [2023-12-21 13:25:02,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2023-12-21 13:25:02,589 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:25:02,589 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] [2023-12-21 13:25:02,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2023-12-21 13:25:02,589 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:25:02,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:25:02,590 INFO L85 PathProgramCache]: Analyzing trace with hash 902129151, now seen corresponding path program 1 times [2023-12-21 13:25:02,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:25:02,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115235604] [2023-12-21 13:25:02,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:25:02,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:25:02,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:25:02,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:25:02,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:25:02,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115235604] [2023-12-21 13:25:02,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115235604] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:25:02,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:25:02,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 13:25:02,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320086171] [2023-12-21 13:25:02,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:25:02,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 13:25:02,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:25:02,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 13:25:02,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-21 13:25:02,760 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) [2023-12-21 13:25:03,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:25:03,350 INFO L93 Difference]: Finished difference Result 182521 states and 214051 transitions. [2023-12-21 13:25:03,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 13:25:03,351 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 [2023-12-21 13:25:03,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:25:03,584 INFO L225 Difference]: With dead ends: 182521 [2023-12-21 13:25:03,584 INFO L226 Difference]: Without dead ends: 162847 [2023-12-21 13:25:03,933 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 [2023-12-21 13:25:03,934 INFO L413 NwaCegarLoop]: 652 mSDtfsCounter, 1064 mSDsluCounter, 1081 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 [2023-12-21 13:25:03,934 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] [2023-12-21 13:25:04,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162847 states. [2023-12-21 13:25:05,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162847 to 151805. [2023-12-21 13:25:05,262 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) [2023-12-21 13:25:05,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151805 states to 151805 states and 176855 transitions. [2023-12-21 13:25:05,463 INFO L78 Accepts]: Start accepts. Automaton has 151805 states and 176855 transitions. Word has length 174 [2023-12-21 13:25:05,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:25:05,463 INFO L495 AbstractCegarLoop]: Abstraction has 151805 states and 176855 transitions. [2023-12-21 13:25:05,463 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) [2023-12-21 13:25:05,464 INFO L276 IsEmpty]: Start isEmpty. Operand 151805 states and 176855 transitions. [2023-12-21 13:25:05,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2023-12-21 13:25:05,493 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:25:05,493 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] [2023-12-21 13:25:05,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2023-12-21 13:25:05,493 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:25:05,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:25:05,494 INFO L85 PathProgramCache]: Analyzing trace with hash 1736172795, now seen corresponding path program 1 times [2023-12-21 13:25:05,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:25:05,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824955444] [2023-12-21 13:25:05,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:25:05,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:25:05,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:25:05,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:25:05,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:25:05,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824955444] [2023-12-21 13:25:05,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824955444] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:25:05,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:25:05,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 13:25:05,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352898732] [2023-12-21 13:25:05,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:25:05,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 13:25:05,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:25:05,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 13:25:05,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-21 13:25:05,983 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) [2023-12-21 13:25:06,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:25:06,429 INFO L93 Difference]: Finished difference Result 182602 states and 214261 transitions. [2023-12-21 13:25:06,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 13:25:06,429 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 [2023-12-21 13:25:06,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:25:06,618 INFO L225 Difference]: With dead ends: 182602 [2023-12-21 13:25:06,618 INFO L226 Difference]: Without dead ends: 162222 [2023-12-21 13:25:06,673 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 [2023-12-21 13:25:06,674 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, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 13:25:06,674 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1061 Valid, 1707 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 13:25:07,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162222 states. [2023-12-21 13:25:08,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162222 to 147249. [2023-12-21 13:25:08,426 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) [2023-12-21 13:25:08,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147249 states to 147249 states and 171380 transitions. [2023-12-21 13:25:08,619 INFO L78 Accepts]: Start accepts. Automaton has 147249 states and 171380 transitions. Word has length 175 [2023-12-21 13:25:08,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:25:08,619 INFO L495 AbstractCegarLoop]: Abstraction has 147249 states and 171380 transitions. [2023-12-21 13:25:08,619 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) [2023-12-21 13:25:08,619 INFO L276 IsEmpty]: Start isEmpty. Operand 147249 states and 171380 transitions. [2023-12-21 13:25:08,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2023-12-21 13:25:08,648 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:25:08,648 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] [2023-12-21 13:25:08,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2023-12-21 13:25:08,649 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:25:08,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:25:08,649 INFO L85 PathProgramCache]: Analyzing trace with hash 1873278339, now seen corresponding path program 1 times [2023-12-21 13:25:08,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:25:08,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087012985] [2023-12-21 13:25:08,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:25:08,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:25:08,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:25:09,184 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:25:09,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:25:09,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087012985] [2023-12-21 13:25:09,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087012985] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:25:09,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1783619721] [2023-12-21 13:25:09,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:25:09,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:25:09,185 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:25:09,195 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 13:25:09,204 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-21 13:25:09,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:25:09,419 INFO L262 TraceCheckSpWp]: Trace formula consists of 660 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-21 13:25:09,430 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:25:10,752 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:25:10,752 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:25:12,472 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:25:12,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1783619721] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:25:12,472 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:25:12,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 13, 14] total 32 [2023-12-21 13:25:12,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969669007] [2023-12-21 13:25:12,473 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:25:12,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-12-21 13:25:12,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:25:12,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-12-21 13:25:12,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=924, Unknown=0, NotChecked=0, Total=1056 [2023-12-21 13:25:12,475 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) [2023-12-21 13:25:25,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:25:25,981 INFO L93 Difference]: Finished difference Result 841881 states and 987857 transitions. [2023-12-21 13:25:25,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 145 states. [2023-12-21 13:25:25,981 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 [2023-12-21 13:25:25,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:25:27,298 INFO L225 Difference]: With dead ends: 841881 [2023-12-21 13:25:27,299 INFO L226 Difference]: Without dead ends: 776129 [2023-12-21 13:25:27,828 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 503 GetRequests, 328 SyntacticMatches, 1 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11134 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=5294, Invalid=25506, Unknown=0, NotChecked=0, Total=30800 [2023-12-21 13:25:27,831 INFO L413 NwaCegarLoop]: 491 mSDtfsCounter, 8397 mSDsluCounter, 10608 mSDsCounter, 0 mSdLazyCounter, 8749 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s 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, 4.3s IncrementalHoareTripleChecker+Time [2023-12-21 13:25:27,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8397 Valid, 11099 Invalid, 8854 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [105 Valid, 8749 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2023-12-21 13:25:28,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 776129 states. [2023-12-21 13:25:31,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 776129 to 171034. [2023-12-21 13:25:32,058 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) [2023-12-21 13:25:32,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171034 states to 171034 states and 198768 transitions. [2023-12-21 13:25:32,916 INFO L78 Accepts]: Start accepts. Automaton has 171034 states and 198768 transitions. Word has length 177 [2023-12-21 13:25:32,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:25:32,916 INFO L495 AbstractCegarLoop]: Abstraction has 171034 states and 198768 transitions. [2023-12-21 13:25:32,916 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) [2023-12-21 13:25:32,917 INFO L276 IsEmpty]: Start isEmpty. Operand 171034 states and 198768 transitions. [2023-12-21 13:25:32,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2023-12-21 13:25:32,958 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:25:32,958 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] [2023-12-21 13:25:32,969 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-21 13:25:33,169 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 [2023-12-21 13:25:33,169 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:25:33,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:25:33,170 INFO L85 PathProgramCache]: Analyzing trace with hash -381377853, now seen corresponding path program 1 times [2023-12-21 13:25:33,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:25:33,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179225106] [2023-12-21 13:25:33,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:25:33,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:25:33,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:25:33,732 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-21 13:25:33,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:25:33,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179225106] [2023-12-21 13:25:33,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179225106] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:25:33,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [716298346] [2023-12-21 13:25:33,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:25:33,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:25:33,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:25:33,734 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 13:25:33,737 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-21 13:25:33,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:25:33,991 INFO L262 TraceCheckSpWp]: Trace formula consists of 660 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-21 13:25:34,002 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:25:35,317 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:25:35,317 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:25:37,164 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:25:37,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [716298346] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:25:37,165 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:25:37,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 13, 14] total 30 [2023-12-21 13:25:37,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783999148] [2023-12-21 13:25:37,165 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:25:37,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-12-21 13:25:37,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:25:37,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-12-21 13:25:37,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=760, Unknown=0, NotChecked=0, Total=870 [2023-12-21 13:25:37,167 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) [2023-12-21 13:25:51,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:25:51,587 INFO L93 Difference]: Finished difference Result 1072003 states and 1240597 transitions. [2023-12-21 13:25:51,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 170 states. [2023-12-21 13:25:51,588 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 [2023-12-21 13:25:51,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:25:53,617 INFO L225 Difference]: With dead ends: 1072003 [2023-12-21 13:25:53,617 INFO L226 Difference]: Without dead ends: 917231 [2023-12-21 13:25:53,956 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 524 GetRequests, 329 SyntacticMatches, 1 SemanticMatches, 194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14352 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=4862, Invalid=33358, Unknown=0, NotChecked=0, Total=38220 [2023-12-21 13:25:53,957 INFO L413 NwaCegarLoop]: 416 mSDtfsCounter, 12491 mSDsluCounter, 7501 mSDsCounter, 0 mSdLazyCounter, 6487 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s 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, 3.6s IncrementalHoareTripleChecker+Time [2023-12-21 13:25:53,957 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12491 Valid, 7917 Invalid, 6621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 6487 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-12-21 13:25:54,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 917231 states. [2023-12-21 13:25:59,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 917231 to 207986. [2023-12-21 13:25:59,388 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) [2023-12-21 13:26:00,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207986 states to 207986 states and 242616 transitions. [2023-12-21 13:26:00,058 INFO L78 Accepts]: Start accepts. Automaton has 207986 states and 242616 transitions. Word has length 177 [2023-12-21 13:26:00,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:26:00,058 INFO L495 AbstractCegarLoop]: Abstraction has 207986 states and 242616 transitions. [2023-12-21 13:26:00,058 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) [2023-12-21 13:26:00,058 INFO L276 IsEmpty]: Start isEmpty. Operand 207986 states and 242616 transitions. [2023-12-21 13:26:00,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2023-12-21 13:26:00,118 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:26:00,118 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] [2023-12-21 13:26:00,128 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-21 13:26:00,324 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 [2023-12-21 13:26:00,325 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:26:00,326 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:26:00,326 INFO L85 PathProgramCache]: Analyzing trace with hash -434272963, now seen corresponding path program 1 times [2023-12-21 13:26:00,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:26:00,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144788955] [2023-12-21 13:26:00,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:26:00,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:26:00,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:26:00,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:26:00,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:26:00,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144788955] [2023-12-21 13:26:00,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144788955] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:26:00,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:26:00,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 13:26:00,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520231228] [2023-12-21 13:26:00,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:26:00,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 13:26:00,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:26:00,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 13:26:00,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-21 13:26:00,428 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) [2023-12-21 13:26:01,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:26:01,289 INFO L93 Difference]: Finished difference Result 246201 states and 288621 transitions. [2023-12-21 13:26:01,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 13:26:01,290 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 [2023-12-21 13:26:01,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:26:01,595 INFO L225 Difference]: With dead ends: 246201 [2023-12-21 13:26:01,595 INFO L226 Difference]: Without dead ends: 222015 [2023-12-21 13:26:01,654 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 [2023-12-21 13:26:01,655 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 [2023-12-21 13:26:01,655 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] [2023-12-21 13:26:01,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222015 states. [2023-12-21 13:26:03,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222015 to 201871. [2023-12-21 13:26:03,597 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) [2023-12-21 13:26:04,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201871 states to 201871 states and 235179 transitions. [2023-12-21 13:26:04,297 INFO L78 Accepts]: Start accepts. Automaton has 201871 states and 235179 transitions. Word has length 178 [2023-12-21 13:26:04,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:26:04,298 INFO L495 AbstractCegarLoop]: Abstraction has 201871 states and 235179 transitions. [2023-12-21 13:26:04,298 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) [2023-12-21 13:26:04,298 INFO L276 IsEmpty]: Start isEmpty. Operand 201871 states and 235179 transitions. [2023-12-21 13:26:04,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2023-12-21 13:26:04,333 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:26:04,333 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] [2023-12-21 13:26:04,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2023-12-21 13:26:04,333 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:26:04,334 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:26:04,334 INFO L85 PathProgramCache]: Analyzing trace with hash -113111230, now seen corresponding path program 1 times [2023-12-21 13:26:04,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:26:04,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462623257] [2023-12-21 13:26:04,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:26:04,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:26:04,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:26:04,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:26:04,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:26:04,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462623257] [2023-12-21 13:26:04,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462623257] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:26:04,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:26:04,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 13:26:04,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337923781] [2023-12-21 13:26:04,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:26:04,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 13:26:04,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:26:04,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 13:26:04,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-21 13:26:04,453 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) [2023-12-21 13:26:05,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:26:05,356 INFO L93 Difference]: Finished difference Result 242885 states and 284300 transitions. [2023-12-21 13:26:05,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 13:26:05,356 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 [2023-12-21 13:26:05,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:26:05,607 INFO L225 Difference]: With dead ends: 242885 [2023-12-21 13:26:05,607 INFO L226 Difference]: Without dead ends: 211640 [2023-12-21 13:26:05,648 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 [2023-12-21 13:26:05,649 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, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 13:26:05,649 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1060 Valid, 1419 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 13:26:05,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211640 states. [2023-12-21 13:26:07,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211640 to 190770. [2023-12-21 13:26:07,532 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) [2023-12-21 13:26:08,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190770 states to 190770 states and 221743 transitions. [2023-12-21 13:26:08,427 INFO L78 Accepts]: Start accepts. Automaton has 190770 states and 221743 transitions. Word has length 180 [2023-12-21 13:26:08,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:26:08,428 INFO L495 AbstractCegarLoop]: Abstraction has 190770 states and 221743 transitions. [2023-12-21 13:26:08,428 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) [2023-12-21 13:26:08,428 INFO L276 IsEmpty]: Start isEmpty. Operand 190770 states and 221743 transitions. [2023-12-21 13:26:08,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2023-12-21 13:26:08,475 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:26:08,475 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] [2023-12-21 13:26:08,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2023-12-21 13:26:08,475 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:26:08,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:26:08,476 INFO L85 PathProgramCache]: Analyzing trace with hash -1896089757, now seen corresponding path program 1 times [2023-12-21 13:26:08,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:26:08,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542545094] [2023-12-21 13:26:08,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:26:08,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:26:08,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:26:08,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:26:08,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:26:08,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542545094] [2023-12-21 13:26:08,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542545094] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:26:08,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:26:08,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 13:26:08,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178806732] [2023-12-21 13:26:08,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:26:08,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 13:26:08,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:26:08,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 13:26:08,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-12-21 13:26:08,656 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) [2023-12-21 13:26:09,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:26:09,616 INFO L93 Difference]: Finished difference Result 231552 states and 270993 transitions. [2023-12-21 13:26:09,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 13:26:09,617 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 [2023-12-21 13:26:09,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:26:10,019 INFO L225 Difference]: With dead ends: 231552 [2023-12-21 13:26:10,019 INFO L226 Difference]: Without dead ends: 213816 [2023-12-21 13:26:10,072 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 [2023-12-21 13:26:10,072 INFO L413 NwaCegarLoop]: 759 mSDtfsCounter, 632 mSDsluCounter, 1196 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 [2023-12-21 13:26:10,072 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] [2023-12-21 13:26:10,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213816 states. [2023-12-21 13:26:11,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213816 to 192412. [2023-12-21 13:26:12,049 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) [2023-12-21 13:26:12,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192412 states to 192412 states and 223642 transitions. [2023-12-21 13:26:12,697 INFO L78 Accepts]: Start accepts. Automaton has 192412 states and 223642 transitions. Word has length 181 [2023-12-21 13:26:12,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:26:12,697 INFO L495 AbstractCegarLoop]: Abstraction has 192412 states and 223642 transitions. [2023-12-21 13:26:12,698 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) [2023-12-21 13:26:12,698 INFO L276 IsEmpty]: Start isEmpty. Operand 192412 states and 223642 transitions. [2023-12-21 13:26:12,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2023-12-21 13:26:12,739 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:26:12,739 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] [2023-12-21 13:26:12,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2023-12-21 13:26:12,739 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:26:12,740 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:26:12,740 INFO L85 PathProgramCache]: Analyzing trace with hash -271112349, now seen corresponding path program 1 times [2023-12-21 13:26:12,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:26:12,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825857304] [2023-12-21 13:26:12,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:26:12,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:26:12,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:26:12,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:26:12,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:26:12,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825857304] [2023-12-21 13:26:12,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825857304] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:26:12,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:26:12,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 13:26:12,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927153117] [2023-12-21 13:26:12,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:26:12,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 13:26:12,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:26:12,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 13:26:12,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-12-21 13:26:12,847 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) [2023-12-21 13:26:13,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:26:13,663 INFO L93 Difference]: Finished difference Result 230681 states and 269681 transitions. [2023-12-21 13:26:13,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 13:26:13,664 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 [2023-12-21 13:26:13,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:26:13,932 INFO L225 Difference]: With dead ends: 230681 [2023-12-21 13:26:13,932 INFO L226 Difference]: Without dead ends: 213593 [2023-12-21 13:26:13,963 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 [2023-12-21 13:26:13,964 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, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:26:13,964 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [637 Valid, 1396 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:26:14,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213593 states. [2023-12-21 13:26:15,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213593 to 184792. [2023-12-21 13:26:15,724 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) [2023-12-21 13:26:16,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184792 states to 184792 states and 214363 transitions. [2023-12-21 13:26:16,355 INFO L78 Accepts]: Start accepts. Automaton has 184792 states and 214363 transitions. Word has length 181 [2023-12-21 13:26:16,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:26:16,356 INFO L495 AbstractCegarLoop]: Abstraction has 184792 states and 214363 transitions. [2023-12-21 13:26:16,356 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) [2023-12-21 13:26:16,356 INFO L276 IsEmpty]: Start isEmpty. Operand 184792 states and 214363 transitions. [2023-12-21 13:26:16,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2023-12-21 13:26:16,394 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:26:16,394 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] [2023-12-21 13:26:16,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2023-12-21 13:26:16,394 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:26:16,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:26:16,395 INFO L85 PathProgramCache]: Analyzing trace with hash -983660587, now seen corresponding path program 1 times [2023-12-21 13:26:16,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:26:16,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391790473] [2023-12-21 13:26:16,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:26:16,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:26:16,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:26:16,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:26:16,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:26:16,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391790473] [2023-12-21 13:26:16,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391790473] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:26:16,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:26:16,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 13:26:16,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202566792] [2023-12-21 13:26:16,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:26:16,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 13:26:16,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:26:16,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 13:26:16,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-12-21 13:26:16,509 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) [2023-12-21 13:26:17,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:26:17,298 INFO L93 Difference]: Finished difference Result 210535 states and 245161 transitions. [2023-12-21 13:26:17,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 13:26:17,298 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 [2023-12-21 13:26:17,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:26:17,517 INFO L225 Difference]: With dead ends: 210535 [2023-12-21 13:26:17,518 INFO L226 Difference]: Without dead ends: 199005 [2023-12-21 13:26:17,541 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 [2023-12-21 13:26:17,541 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 [2023-12-21 13:26:17,541 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] [2023-12-21 13:26:17,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199005 states. [2023-12-21 13:26:19,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199005 to 181551. [2023-12-21 13:26:19,213 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) [2023-12-21 13:26:19,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181551 states to 181551 states and 210432 transitions. [2023-12-21 13:26:19,453 INFO L78 Accepts]: Start accepts. Automaton has 181551 states and 210432 transitions. Word has length 181 [2023-12-21 13:26:19,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:26:19,454 INFO L495 AbstractCegarLoop]: Abstraction has 181551 states and 210432 transitions. [2023-12-21 13:26:19,454 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) [2023-12-21 13:26:19,454 INFO L276 IsEmpty]: Start isEmpty. Operand 181551 states and 210432 transitions. [2023-12-21 13:26:19,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2023-12-21 13:26:19,498 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:26:19,498 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] [2023-12-21 13:26:19,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2023-12-21 13:26:19,498 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:26:19,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:26:19,499 INFO L85 PathProgramCache]: Analyzing trace with hash -1714475269, now seen corresponding path program 1 times [2023-12-21 13:26:19,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:26:19,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731592138] [2023-12-21 13:26:19,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:26:19,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:26:19,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:26:19,928 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:26:19,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:26:19,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731592138] [2023-12-21 13:26:19,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731592138] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:26:19,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1826707312] [2023-12-21 13:26:19,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:26:19,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:26:19,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:26:19,934 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 13:26:19,936 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-21 13:26:20,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:26:20,144 INFO L262 TraceCheckSpWp]: Trace formula consists of 680 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-21 13:26:20,147 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:26:20,537 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:26:20,537 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:26:20,729 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:26:20,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1826707312] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:26:20,729 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:26:20,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 14 [2023-12-21 13:26:20,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150928833] [2023-12-21 13:26:20,729 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:26:20,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-21 13:26:20,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:26:20,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-21 13:26:20,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2023-12-21 13:26:20,731 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) [2023-12-21 13:26:21,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:26:21,789 INFO L93 Difference]: Finished difference Result 254507 states and 296011 transitions. [2023-12-21 13:26:21,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-21 13:26:21,790 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 [2023-12-21 13:26:21,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:26:22,046 INFO L225 Difference]: With dead ends: 254507 [2023-12-21 13:26:22,047 INFO L226 Difference]: Without dead ends: 202574 [2023-12-21 13:26:22,090 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 [2023-12-21 13:26:22,090 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 [2023-12-21 13:26:22,090 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] [2023-12-21 13:26:22,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202574 states. [2023-12-21 13:26:23,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202574 to 181010. [2023-12-21 13:26:23,833 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) [2023-12-21 13:26:24,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181010 states to 181010 states and 209303 transitions. [2023-12-21 13:26:24,465 INFO L78 Accepts]: Start accepts. Automaton has 181010 states and 209303 transitions. Word has length 188 [2023-12-21 13:26:24,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:26:24,466 INFO L495 AbstractCegarLoop]: Abstraction has 181010 states and 209303 transitions. [2023-12-21 13:26:24,466 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) [2023-12-21 13:26:24,466 INFO L276 IsEmpty]: Start isEmpty. Operand 181010 states and 209303 transitions. [2023-12-21 13:26:24,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2023-12-21 13:26:24,514 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:26:24,515 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] [2023-12-21 13:26:24,520 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-21 13:26:24,716 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 [2023-12-21 13:26:24,717 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:26:24,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:26:24,717 INFO L85 PathProgramCache]: Analyzing trace with hash -987774309, now seen corresponding path program 1 times [2023-12-21 13:26:24,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:26:24,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600366049] [2023-12-21 13:26:24,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:26:24,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:26:24,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:26:24,777 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:26:24,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:26:24,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600366049] [2023-12-21 13:26:24,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600366049] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:26:24,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1072655667] [2023-12-21 13:26:24,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:26:24,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:26:24,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:26:24,779 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 13:26:24,780 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-21 13:26:24,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:26:24,932 INFO L262 TraceCheckSpWp]: Trace formula consists of 683 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-21 13:26:24,934 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:26:25,332 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:26:25,332 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:26:25,520 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:26:25,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1072655667] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:26:25,520 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:26:25,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 14 [2023-12-21 13:26:25,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270350272] [2023-12-21 13:26:25,521 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:26:25,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-21 13:26:25,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:26:25,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-21 13:26:25,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2023-12-21 13:26:25,522 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) [2023-12-21 13:26:26,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:26:26,602 INFO L93 Difference]: Finished difference Result 268166 states and 307996 transitions. [2023-12-21 13:26:26,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-21 13:26:26,602 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 [2023-12-21 13:26:26,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:26:26,850 INFO L225 Difference]: With dead ends: 268166 [2023-12-21 13:26:26,850 INFO L226 Difference]: Without dead ends: 208396 [2023-12-21 13:26:26,914 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 [2023-12-21 13:26:26,915 INFO L413 NwaCegarLoop]: 243 mSDtfsCounter, 2924 mSDsluCounter, 894 mSDsCounter, 0 mSdLazyCounter, 747 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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 [2023-12-21 13:26:26,915 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] [2023-12-21 13:26:27,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208396 states. [2023-12-21 13:26:28,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208396 to 180220. [2023-12-21 13:26:28,726 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) [2023-12-21 13:26:29,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180220 states to 180220 states and 207721 transitions. [2023-12-21 13:26:29,649 INFO L78 Accepts]: Start accepts. Automaton has 180220 states and 207721 transitions. Word has length 189 [2023-12-21 13:26:29,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:26:29,649 INFO L495 AbstractCegarLoop]: Abstraction has 180220 states and 207721 transitions. [2023-12-21 13:26:29,649 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) [2023-12-21 13:26:29,649 INFO L276 IsEmpty]: Start isEmpty. Operand 180220 states and 207721 transitions. [2023-12-21 13:26:29,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2023-12-21 13:26:29,704 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:26:29,705 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:26:29,712 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-21 13:26:29,911 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 [2023-12-21 13:26:29,911 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:26:29,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:26:29,912 INFO L85 PathProgramCache]: Analyzing trace with hash 247955628, now seen corresponding path program 1 times [2023-12-21 13:26:29,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:26:29,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014330260] [2023-12-21 13:26:29,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:26:29,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:26:29,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:26:30,032 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:26:30,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:26:30,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014330260] [2023-12-21 13:26:30,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014330260] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:26:30,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [333553243] [2023-12-21 13:26:30,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:26:30,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:26:30,033 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:26:30,034 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 13:26:30,052 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-21 13:26:30,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:26:30,257 INFO L262 TraceCheckSpWp]: Trace formula consists of 683 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-21 13:26:30,259 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:26:30,741 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:26:30,741 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:26:30,977 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:26:30,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [333553243] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:26:30,978 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:26:30,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 14 [2023-12-21 13:26:30,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148411418] [2023-12-21 13:26:30,978 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:26:30,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-21 13:26:30,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:26:30,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-21 13:26:30,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2023-12-21 13:26:30,979 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) [2023-12-21 13:26:32,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:26:32,147 INFO L93 Difference]: Finished difference Result 297444 states and 342491 transitions. [2023-12-21 13:26:32,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-21 13:26:32,148 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 [2023-12-21 13:26:32,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:26:32,412 INFO L225 Difference]: With dead ends: 297444 [2023-12-21 13:26:32,413 INFO L226 Difference]: Without dead ends: 218510 [2023-12-21 13:26:32,495 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 [2023-12-21 13:26:32,495 INFO L413 NwaCegarLoop]: 236 mSDtfsCounter, 2559 mSDsluCounter, 822 mSDsCounter, 0 mSdLazyCounter, 653 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 13:26:32,495 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2559 Valid, 1058 Invalid, 699 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 653 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 13:26:32,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218510 states. [2023-12-21 13:26:34,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218510 to 182284. [2023-12-21 13:26:34,687 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) [2023-12-21 13:26:34,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182284 states to 182284 states and 209265 transitions. [2023-12-21 13:26:34,981 INFO L78 Accepts]: Start accepts. Automaton has 182284 states and 209265 transitions. Word has length 189 [2023-12-21 13:26:34,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:26:34,981 INFO L495 AbstractCegarLoop]: Abstraction has 182284 states and 209265 transitions. [2023-12-21 13:26:34,981 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) [2023-12-21 13:26:34,981 INFO L276 IsEmpty]: Start isEmpty. Operand 182284 states and 209265 transitions. [2023-12-21 13:26:35,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2023-12-21 13:26:35,041 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:26:35,041 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] [2023-12-21 13:26:35,047 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-21 13:26:35,242 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 [2023-12-21 13:26:35,242 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:26:35,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:26:35,243 INFO L85 PathProgramCache]: Analyzing trace with hash -1305645660, now seen corresponding path program 1 times [2023-12-21 13:26:35,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:26:35,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433944261] [2023-12-21 13:26:35,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:26:35,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:26:35,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:26:35,303 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:26:35,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:26:35,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433944261] [2023-12-21 13:26:35,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433944261] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:26:35,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [941341655] [2023-12-21 13:26:35,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:26:35,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:26:35,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:26:35,306 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 13:26:35,323 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-21 13:26:35,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:26:35,482 INFO L262 TraceCheckSpWp]: Trace formula consists of 686 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-21 13:26:35,484 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:26:36,183 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:26:36,183 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:26:36,380 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:26:36,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [941341655] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:26:36,380 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:26:36,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 14 [2023-12-21 13:26:36,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773195130] [2023-12-21 13:26:36,380 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:26:36,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-21 13:26:36,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:26:36,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-21 13:26:36,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2023-12-21 13:26:36,382 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) [2023-12-21 13:26:37,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:26:37,442 INFO L93 Difference]: Finished difference Result 279088 states and 322053 transitions. [2023-12-21 13:26:37,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-21 13:26:37,442 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 [2023-12-21 13:26:37,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:26:37,764 INFO L225 Difference]: With dead ends: 279088 [2023-12-21 13:26:37,764 INFO L226 Difference]: Without dead ends: 203032 [2023-12-21 13:26:37,837 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 [2023-12-21 13:26:37,839 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 2345 mSDsluCounter, 496 mSDsCounter, 0 mSdLazyCounter, 406 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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 [2023-12-21 13:26:37,839 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] [2023-12-21 13:26:37,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203032 states. [2023-12-21 13:26:39,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203032 to 178556. [2023-12-21 13:26:39,696 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) [2023-12-21 13:26:40,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178556 states to 178556 states and 204096 transitions. [2023-12-21 13:26:40,274 INFO L78 Accepts]: Start accepts. Automaton has 178556 states and 204096 transitions. Word has length 191 [2023-12-21 13:26:40,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:26:40,275 INFO L495 AbstractCegarLoop]: Abstraction has 178556 states and 204096 transitions. [2023-12-21 13:26:40,275 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) [2023-12-21 13:26:40,276 INFO L276 IsEmpty]: Start isEmpty. Operand 178556 states and 204096 transitions. [2023-12-21 13:26:40,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2023-12-21 13:26:40,364 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:26:40,365 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] [2023-12-21 13:26:40,372 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-21 13:26:40,565 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 [2023-12-21 13:26:40,566 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:26:40,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:26:40,566 INFO L85 PathProgramCache]: Analyzing trace with hash 177643297, now seen corresponding path program 1 times [2023-12-21 13:26:40,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:26:40,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945131317] [2023-12-21 13:26:40,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:26:40,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:26:40,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:26:40,686 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-12-21 13:26:40,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:26:40,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945131317] [2023-12-21 13:26:40,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945131317] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:26:40,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:26:40,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 13:26:40,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341227246] [2023-12-21 13:26:40,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:26:40,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 13:26:40,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:26:40,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 13:26:40,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:26:40,690 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) [2023-12-21 13:26:41,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:26:41,750 INFO L93 Difference]: Finished difference Result 252916 states and 288721 transitions. [2023-12-21 13:26:41,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 13:26:41,750 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 [2023-12-21 13:26:41,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:26:41,956 INFO L225 Difference]: With dead ends: 252916 [2023-12-21 13:26:41,956 INFO L226 Difference]: Without dead ends: 170361 [2023-12-21 13:26:42,019 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 [2023-12-21 13:26:42,019 INFO L413 NwaCegarLoop]: 248 mSDtfsCounter, 1217 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 13:26:42,020 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1217 Valid, 554 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 13:26:42,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170361 states. [2023-12-21 13:26:43,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170361 to 170355. [2023-12-21 13:26:43,651 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) [2023-12-21 13:26:43,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170355 states to 170355 states and 195045 transitions. [2023-12-21 13:26:43,973 INFO L78 Accepts]: Start accepts. Automaton has 170355 states and 195045 transitions. Word has length 195 [2023-12-21 13:26:43,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:26:43,973 INFO L495 AbstractCegarLoop]: Abstraction has 170355 states and 195045 transitions. [2023-12-21 13:26:43,973 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) [2023-12-21 13:26:43,973 INFO L276 IsEmpty]: Start isEmpty. Operand 170355 states and 195045 transitions. [2023-12-21 13:26:44,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2023-12-21 13:26:44,019 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:26:44,019 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] [2023-12-21 13:26:44,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2023-12-21 13:26:44,019 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:26:44,019 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:26:44,019 INFO L85 PathProgramCache]: Analyzing trace with hash -582580676, now seen corresponding path program 1 times [2023-12-21 13:26:44,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:26:44,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3140211] [2023-12-21 13:26:44,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:26:44,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:26:44,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:26:44,228 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:26:44,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:26:44,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3140211] [2023-12-21 13:26:44,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3140211] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:26:44,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1642778720] [2023-12-21 13:26:44,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:26:44,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:26:44,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:26:44,230 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 13:26:44,249 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-21 13:26:44,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:26:44,635 INFO L262 TraceCheckSpWp]: Trace formula consists of 698 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-21 13:26:44,638 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:26:45,401 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:26:45,401 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:26:47,008 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:26:47,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1642778720] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:26:47,008 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:26:47,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 13, 14] total 32 [2023-12-21 13:26:47,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262093519] [2023-12-21 13:26:47,008 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:26:47,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-12-21 13:26:47,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:26:47,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-12-21 13:26:47,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=924, Unknown=0, NotChecked=0, Total=1056 [2023-12-21 13:26:47,009 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) [2023-12-21 13:26:55,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:26:55,243 INFO L93 Difference]: Finished difference Result 601043 states and 695926 transitions. [2023-12-21 13:26:55,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2023-12-21 13:26:55,244 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 [2023-12-21 13:26:55,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:26:56,457 INFO L225 Difference]: With dead ends: 601043 [2023-12-21 13:26:56,458 INFO L226 Difference]: Without dead ends: 539866 [2023-12-21 13:26:56,576 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 492 GetRequests, 364 SyntacticMatches, 1 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5298 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=3456, Invalid=13056, Unknown=0, NotChecked=0, Total=16512 [2023-12-21 13:26:56,577 INFO L413 NwaCegarLoop]: 456 mSDtfsCounter, 7131 mSDsluCounter, 8460 mSDsCounter, 0 mSdLazyCounter, 6557 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s 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, 3.1s IncrementalHoareTripleChecker+Time [2023-12-21 13:26:56,577 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7131 Valid, 8916 Invalid, 6636 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 6557 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-12-21 13:26:56,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539866 states. [2023-12-21 13:26:59,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539866 to 221526. [2023-12-21 13:27:00,413 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) [2023-12-21 13:27:00,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221526 states to 221526 states and 253711 transitions. [2023-12-21 13:27:00,815 INFO L78 Accepts]: Start accepts. Automaton has 221526 states and 253711 transitions. Word has length 195 [2023-12-21 13:27:00,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:27:00,816 INFO L495 AbstractCegarLoop]: Abstraction has 221526 states and 253711 transitions. [2023-12-21 13:27:00,816 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) [2023-12-21 13:27:00,816 INFO L276 IsEmpty]: Start isEmpty. Operand 221526 states and 253711 transitions. [2023-12-21 13:27:00,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2023-12-21 13:27:00,867 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:27:00,867 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] [2023-12-21 13:27:00,877 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-21 13:27:01,073 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 [2023-12-21 13:27:01,074 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:27:01,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:27:01,074 INFO L85 PathProgramCache]: Analyzing trace with hash 1070649528, now seen corresponding path program 1 times [2023-12-21 13:27:01,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:27:01,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512649597] [2023-12-21 13:27:01,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:27:01,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:27:01,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:27:01,655 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:27:01,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:27:01,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512649597] [2023-12-21 13:27:01,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512649597] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:27:01,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [609929147] [2023-12-21 13:27:01,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:27:01,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:27:01,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:27:01,657 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 13:27:01,660 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-21 13:27:01,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:27:01,840 INFO L262 TraceCheckSpWp]: Trace formula consists of 701 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-21 13:27:01,842 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:27:02,718 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:27:02,719 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:27:03,833 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:27:03,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [609929147] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:27:03,834 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:27:03,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 13, 13] total 31 [2023-12-21 13:27:03,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80325056] [2023-12-21 13:27:03,834 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:27:03,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-21 13:27:03,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:27:03,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-21 13:27:03,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=872, Unknown=0, NotChecked=0, Total=992 [2023-12-21 13:27:03,835 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) [2023-12-21 13:27:11,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:27:11,196 INFO L93 Difference]: Finished difference Result 674724 states and 768130 transitions. [2023-12-21 13:27:11,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2023-12-21 13:27:11,197 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 [2023-12-21 13:27:11,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:27:12,432 INFO L225 Difference]: With dead ends: 674724 [2023-12-21 13:27:12,432 INFO L226 Difference]: Without dead ends: 576810 [2023-12-21 13:27:12,520 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 468 GetRequests, 367 SyntacticMatches, 1 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2988 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=2203, Invalid=8099, Unknown=0, NotChecked=0, Total=10302 [2023-12-21 13:27:12,521 INFO L413 NwaCegarLoop]: 539 mSDtfsCounter, 6927 mSDsluCounter, 8269 mSDsCounter, 0 mSdLazyCounter, 7199 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s 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, 3.2s IncrementalHoareTripleChecker+Time [2023-12-21 13:27:12,521 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6927 Valid, 8808 Invalid, 7269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 7199 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-12-21 13:27:12,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576810 states. [2023-12-21 13:27:16,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576810 to 269943. [2023-12-21 13:27:16,917 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) [2023-12-21 13:27:17,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269943 states to 269943 states and 309196 transitions. [2023-12-21 13:27:17,448 INFO L78 Accepts]: Start accepts. Automaton has 269943 states and 309196 transitions. Word has length 196 [2023-12-21 13:27:17,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:27:17,448 INFO L495 AbstractCegarLoop]: Abstraction has 269943 states and 309196 transitions. [2023-12-21 13:27:17,449 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) [2023-12-21 13:27:17,449 INFO L276 IsEmpty]: Start isEmpty. Operand 269943 states and 309196 transitions. [2023-12-21 13:27:17,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2023-12-21 13:27:17,517 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:27:17,517 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] [2023-12-21 13:27:17,523 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-21 13:27:17,718 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 [2023-12-21 13:27:17,718 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:27:17,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:27:17,719 INFO L85 PathProgramCache]: Analyzing trace with hash -185927164, now seen corresponding path program 1 times [2023-12-21 13:27:17,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:27:17,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956905769] [2023-12-21 13:27:17,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:27:17,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:27:17,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:27:18,304 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:27:18,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:27:18,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956905769] [2023-12-21 13:27:18,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956905769] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:27:18,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1286405277] [2023-12-21 13:27:18,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:27:18,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:27:18,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:27:18,306 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 13:27:18,307 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-21 13:27:18,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:27:18,491 INFO L262 TraceCheckSpWp]: Trace formula consists of 698 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-21 13:27:18,494 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:27:19,215 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:27:19,216 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:27:20,826 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:27:20,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1286405277] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:27:20,827 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:27:20,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 12, 13] total 31 [2023-12-21 13:27:20,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171610821] [2023-12-21 13:27:20,827 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:27:20,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-21 13:27:20,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:27:20,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-21 13:27:20,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=845, Unknown=0, NotChecked=0, Total=992 [2023-12-21 13:27:20,829 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) [2023-12-21 13:27:30,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:27:30,970 INFO L93 Difference]: Finished difference Result 1185947 states and 1359979 transitions. [2023-12-21 13:27:30,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2023-12-21 13:27:30,970 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 [2023-12-21 13:27:30,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:27:33,371 INFO L225 Difference]: With dead ends: 1185947 [2023-12-21 13:27:33,372 INFO L226 Difference]: Without dead ends: 1096579 [2023-12-21 13:27:33,653 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 502 GetRequests, 368 SyntacticMatches, 0 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5754 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=3830, Invalid=14530, Unknown=0, NotChecked=0, Total=18360 [2023-12-21 13:27:33,654 INFO L413 NwaCegarLoop]: 501 mSDtfsCounter, 8678 mSDsluCounter, 6427 mSDsCounter, 0 mSdLazyCounter, 5341 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s 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, 2.8s IncrementalHoareTripleChecker+Time [2023-12-21 13:27:33,654 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8678 Valid, 6928 Invalid, 5441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 5341 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-21 13:27:34,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1096579 states. [2023-12-21 13:27:40,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1096579 to 359641. [2023-12-21 13:27:41,165 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) [2023-12-21 13:27:42,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359641 states to 359641 states and 412126 transitions. [2023-12-21 13:27:42,264 INFO L78 Accepts]: Start accepts. Automaton has 359641 states and 412126 transitions. Word has length 196 [2023-12-21 13:27:42,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:27:42,265 INFO L495 AbstractCegarLoop]: Abstraction has 359641 states and 412126 transitions. [2023-12-21 13:27:42,265 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) [2023-12-21 13:27:42,265 INFO L276 IsEmpty]: Start isEmpty. Operand 359641 states and 412126 transitions. [2023-12-21 13:27:42,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2023-12-21 13:27:42,343 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:27:42,343 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] [2023-12-21 13:27:42,349 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-21 13:27:42,543 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 [2023-12-21 13:27:42,544 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:27:42,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:27:42,545 INFO L85 PathProgramCache]: Analyzing trace with hash -1367747568, now seen corresponding path program 1 times [2023-12-21 13:27:42,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:27:42,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498698784] [2023-12-21 13:27:42,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:27:42,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:27:42,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:27:42,989 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-21 13:27:42,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:27:42,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498698784] [2023-12-21 13:27:42,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498698784] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:27:42,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:27:42,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-21 13:27:42,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534693915] [2023-12-21 13:27:42,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:27:42,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-21 13:27:42,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:27:42,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-21 13:27:42,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2023-12-21 13:27:42,990 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) [2023-12-21 13:27:46,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:27:46,193 INFO L93 Difference]: Finished difference Result 642696 states and 741645 transitions. [2023-12-21 13:27:46,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-12-21 13:27:46,194 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 [2023-12-21 13:27:46,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:27:47,097 INFO L225 Difference]: With dead ends: 642696 [2023-12-21 13:27:47,097 INFO L226 Difference]: Without dead ends: 562433 [2023-12-21 13:27:47,223 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=298, Invalid=892, Unknown=0, NotChecked=0, Total=1190 [2023-12-21 13:27:47,224 INFO L413 NwaCegarLoop]: 662 mSDtfsCounter, 3895 mSDsluCounter, 4137 mSDsCounter, 0 mSdLazyCounter, 768 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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 [2023-12-21 13:27:47,224 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] [2023-12-21 13:27:47,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562433 states. [2023-12-21 13:27:51,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562433 to 356934. [2023-12-21 13:27:52,191 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) [2023-12-21 13:27:53,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356934 states to 356934 states and 409060 transitions. [2023-12-21 13:27:53,245 INFO L78 Accepts]: Start accepts. Automaton has 356934 states and 409060 transitions. Word has length 197 [2023-12-21 13:27:53,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:27:53,245 INFO L495 AbstractCegarLoop]: Abstraction has 356934 states and 409060 transitions. [2023-12-21 13:27:53,246 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) [2023-12-21 13:27:53,246 INFO L276 IsEmpty]: Start isEmpty. Operand 356934 states and 409060 transitions. [2023-12-21 13:27:53,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2023-12-21 13:27:53,315 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:27:53,315 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] [2023-12-21 13:27:53,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2023-12-21 13:27:53,315 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:27:53,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:27:53,316 INFO L85 PathProgramCache]: Analyzing trace with hash 277842117, now seen corresponding path program 1 times [2023-12-21 13:27:53,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:27:53,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176737119] [2023-12-21 13:27:53,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:27:53,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:27:53,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:27:53,389 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-21 13:27:53,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:27:53,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176737119] [2023-12-21 13:27:53,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176737119] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:27:53,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:27:53,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 13:27:53,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941321049] [2023-12-21 13:27:53,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:27:53,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 13:27:53,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:27:53,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 13:27:53,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 13:27:53,390 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) [2023-12-21 13:27:55,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:27:55,650 INFO L93 Difference]: Finished difference Result 718864 states and 827982 transitions. [2023-12-21 13:27:55,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 13:27:55,651 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 [2023-12-21 13:27:55,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:27:56,655 INFO L225 Difference]: With dead ends: 718864 [2023-12-21 13:27:56,655 INFO L226 Difference]: Without dead ends: 599819 [2023-12-21 13:27:57,189 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 [2023-12-21 13:27:57,189 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 [2023-12-21 13:27:57,189 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] [2023-12-21 13:27:57,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599819 states. [2023-12-21 13:28:01,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599819 to 350317. [2023-12-21 13:28:01,538 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) [2023-12-21 13:28:02,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350317 states to 350317 states and 401383 transitions. [2023-12-21 13:28:02,561 INFO L78 Accepts]: Start accepts. Automaton has 350317 states and 401383 transitions. Word has length 197 [2023-12-21 13:28:02,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:28:02,561 INFO L495 AbstractCegarLoop]: Abstraction has 350317 states and 401383 transitions. [2023-12-21 13:28:02,562 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) [2023-12-21 13:28:02,562 INFO L276 IsEmpty]: Start isEmpty. Operand 350317 states and 401383 transitions. [2023-12-21 13:28:02,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2023-12-21 13:28:02,630 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:28:02,631 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] [2023-12-21 13:28:02,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2023-12-21 13:28:02,631 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:28:02,631 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:28:02,631 INFO L85 PathProgramCache]: Analyzing trace with hash -738349398, now seen corresponding path program 1 times [2023-12-21 13:28:02,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:28:02,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933854639] [2023-12-21 13:28:02,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:28:02,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:28:02,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:28:04,498 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:28:04,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:28:04,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933854639] [2023-12-21 13:28:04,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933854639] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:28:04,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [233329917] [2023-12-21 13:28:04,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:28:04,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:28:04,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:28:04,499 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 13:28:04,501 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-21 13:28:04,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:28:04,684 INFO L262 TraceCheckSpWp]: Trace formula consists of 704 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-21 13:28:04,686 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:28:05,714 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-21 13:28:05,714 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 13:28:05,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [233329917] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:28:05,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 13:28:05,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [27] total 40 [2023-12-21 13:28:05,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987475520] [2023-12-21 13:28:05,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:28:05,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-21 13:28:05,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:28:05,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-21 13:28:05,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=1448, Unknown=0, NotChecked=0, Total=1560 [2023-12-21 13:28:05,716 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) [2023-12-21 13:28:08,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:28:08,207 INFO L93 Difference]: Finished difference Result 481888 states and 552996 transitions. [2023-12-21 13:28:08,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-21 13:28:08,207 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 [2023-12-21 13:28:08,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:28:09,295 INFO L225 Difference]: With dead ends: 481888 [2023-12-21 13:28:09,295 INFO L226 Difference]: Without dead ends: 423907 [2023-12-21 13:28:09,489 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 388 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=225, Invalid=2427, Unknown=0, NotChecked=0, Total=2652 [2023-12-21 13:28:09,489 INFO L413 NwaCegarLoop]: 595 mSDtfsCounter, 2141 mSDsluCounter, 6041 mSDsCounter, 0 mSdLazyCounter, 882 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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 [2023-12-21 13:28:09,489 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] [2023-12-21 13:28:09,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423907 states. [2023-12-21 13:28:13,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423907 to 349865. [2023-12-21 13:28:13,342 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) [2023-12-21 13:28:14,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349865 states to 349865 states and 400896 transitions. [2023-12-21 13:28:14,386 INFO L78 Accepts]: Start accepts. Automaton has 349865 states and 400896 transitions. Word has length 197 [2023-12-21 13:28:14,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:28:14,386 INFO L495 AbstractCegarLoop]: Abstraction has 349865 states and 400896 transitions. [2023-12-21 13:28:14,386 INFO L496 AbstractCegarLoop]: INTERPOLANT 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) [2023-12-21 13:28:14,386 INFO L276 IsEmpty]: Start isEmpty. Operand 349865 states and 400896 transitions. [2023-12-21 13:28:14,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2023-12-21 13:28:14,461 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:28:14,462 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] [2023-12-21 13:28:14,467 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-21 13:28:14,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:28:14,663 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:28:14,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:28:14,663 INFO L85 PathProgramCache]: Analyzing trace with hash 314597366, now seen corresponding path program 1 times [2023-12-21 13:28:14,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:28:14,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014538363] [2023-12-21 13:28:14,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:28:14,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:28:14,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:28:15,433 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-12-21 13:28:15,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:28:15,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014538363] [2023-12-21 13:28:15,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014538363] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:28:15,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:28:15,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-21 13:28:15,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601959312] [2023-12-21 13:28:15,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:28:15,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-21 13:28:15,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:28:15,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-21 13:28:15,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2023-12-21 13:28:15,435 INFO L87 Difference]: Start difference. First operand 349865 states and 400896 transitions. Second operand has 13 states, 13 states have (on average 14.615384615384615) internal successors, (190), 12 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:28:18,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:28:18,378 INFO L93 Difference]: Finished difference Result 593491 states and 680732 transitions. [2023-12-21 13:28:18,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-12-21 13:28:18,379 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 14.615384615384615) internal successors, (190), 12 states have internal predecessors, (190), 0 states have call successors, (0), 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 [2023-12-21 13:28:18,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:28:19,514 INFO L225 Difference]: With dead ends: 593491 [2023-12-21 13:28:19,514 INFO L226 Difference]: Without dead ends: 490951 [2023-12-21 13:28:19,607 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 278 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=271, Invalid=1061, Unknown=0, NotChecked=0, Total=1332 [2023-12-21 13:28:19,607 INFO L413 NwaCegarLoop]: 1178 mSDtfsCounter, 5666 mSDsluCounter, 8583 mSDsCounter, 0 mSdLazyCounter, 1337 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5666 SdHoareTripleChecker+Valid, 9761 SdHoareTripleChecker+Invalid, 1360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-21 13:28:19,607 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5666 Valid, 9761 Invalid, 1360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1337 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-21 13:28:19,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490951 states. [2023-12-21 13:28:23,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490951 to 347752. [2023-12-21 13:28:23,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347752 states, 347751 states have (on average 1.1461850576993309) internal successors, (398587), 347751 states have internal predecessors, (398587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:28:24,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347752 states to 347752 states and 398587 transitions. [2023-12-21 13:28:24,592 INFO L78 Accepts]: Start accepts. Automaton has 347752 states and 398587 transitions. Word has length 197 [2023-12-21 13:28:24,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:28:24,592 INFO L495 AbstractCegarLoop]: Abstraction has 347752 states and 398587 transitions. [2023-12-21 13:28:24,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 14.615384615384615) internal successors, (190), 12 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:28:24,592 INFO L276 IsEmpty]: Start isEmpty. Operand 347752 states and 398587 transitions. [2023-12-21 13:28:24,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2023-12-21 13:28:24,656 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:28:24,656 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] [2023-12-21 13:28:24,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2023-12-21 13:28:24,657 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:28:24,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:28:24,657 INFO L85 PathProgramCache]: Analyzing trace with hash -1016741352, now seen corresponding path program 1 times [2023-12-21 13:28:24,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:28:24,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362272507] [2023-12-21 13:28:24,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:28:24,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:28:25,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:28:26,378 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:28:26,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:28:26,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362272507] [2023-12-21 13:28:26,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362272507] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:28:26,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1704848838] [2023-12-21 13:28:26,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:28:26,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:28:26,379 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:28:26,381 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 13:28:26,382 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-21 13:28:26,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:28:26,558 INFO L262 TraceCheckSpWp]: Trace formula consists of 704 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-21 13:28:26,561 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:28:27,355 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-21 13:28:27,356 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 13:28:27,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1704848838] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:28:27,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 13:28:27,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [24] total 37 [2023-12-21 13:28:27,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719945011] [2023-12-21 13:28:27,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:28:27,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-21 13:28:27,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:28:27,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-21 13:28:27,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=1227, Unknown=0, NotChecked=0, Total=1332 [2023-12-21 13:28:27,357 INFO L87 Difference]: Start difference. First operand 347752 states and 398587 transitions. Second operand has 14 states, 14 states have (on average 13.714285714285714) internal successors, (192), 14 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:28:30,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:28:30,086 INFO L93 Difference]: Finished difference Result 623332 states and 717803 transitions. [2023-12-21 13:28:30,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-21 13:28:30,086 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 13.714285714285714) internal successors, (192), 14 states have internal predecessors, (192), 0 states have call successors, (0), 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 [2023-12-21 13:28:30,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:28:30,980 INFO L225 Difference]: With dead ends: 623332 [2023-12-21 13:28:30,981 INFO L226 Difference]: Without dead ends: 516475 [2023-12-21 13:28:31,516 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=275, Invalid=2481, Unknown=0, NotChecked=0, Total=2756 [2023-12-21 13:28:31,516 INFO L413 NwaCegarLoop]: 635 mSDtfsCounter, 2897 mSDsluCounter, 6656 mSDsCounter, 0 mSdLazyCounter, 855 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2897 SdHoareTripleChecker+Valid, 7291 SdHoareTripleChecker+Invalid, 869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 855 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 13:28:31,517 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2897 Valid, 7291 Invalid, 869 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 855 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 13:28:31,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516475 states. [2023-12-21 13:28:35,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516475 to 347310. [2023-12-21 13:28:35,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347310 states, 347309 states have (on average 1.1461609114650066) internal successors, (398072), 347309 states have internal predecessors, (398072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:28:36,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347310 states to 347310 states and 398072 transitions. [2023-12-21 13:28:36,427 INFO L78 Accepts]: Start accepts. Automaton has 347310 states and 398072 transitions. Word has length 197 [2023-12-21 13:28:36,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:28:36,427 INFO L495 AbstractCegarLoop]: Abstraction has 347310 states and 398072 transitions. [2023-12-21 13:28:36,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 13.714285714285714) internal successors, (192), 14 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:28:36,427 INFO L276 IsEmpty]: Start isEmpty. Operand 347310 states and 398072 transitions. [2023-12-21 13:28:36,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2023-12-21 13:28:36,491 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:28:36,491 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, 1] [2023-12-21 13:28:36,501 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-21 13:28:36,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:28:36,692 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:28:36,692 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:28:36,692 INFO L85 PathProgramCache]: Analyzing trace with hash -1802819701, now seen corresponding path program 1 times [2023-12-21 13:28:36,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:28:36,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692716104] [2023-12-21 13:28:36,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:28:36,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:28:36,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:28:37,649 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-12-21 13:28:37,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:28:37,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692716104] [2023-12-21 13:28:37,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692716104] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:28:37,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:28:37,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2023-12-21 13:28:37,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905554667] [2023-12-21 13:28:37,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:28:37,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-21 13:28:37,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:28:37,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-21 13:28:37,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2023-12-21 13:28:37,651 INFO L87 Difference]: Start difference. First operand 347310 states and 398072 transitions. Second operand has 18 states, 18 states have (on average 10.61111111111111) internal successors, (191), 18 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:28:40,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:28:40,375 INFO L93 Difference]: Finished difference Result 608208 states and 703353 transitions. [2023-12-21 13:28:40,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-21 13:28:40,376 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 10.61111111111111) internal successors, (191), 18 states have internal predecessors, (191), 0 states have call successors, (0), 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 198 [2023-12-21 13:28:40,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:28:41,688 INFO L225 Difference]: With dead ends: 608208 [2023-12-21 13:28:41,688 INFO L226 Difference]: Without dead ends: 582936 [2023-12-21 13:28:41,787 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=155, Invalid=901, Unknown=0, NotChecked=0, Total=1056 [2023-12-21 13:28:41,788 INFO L413 NwaCegarLoop]: 1064 mSDtfsCounter, 1966 mSDsluCounter, 11862 mSDsCounter, 0 mSdLazyCounter, 2412 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1966 SdHoareTripleChecker+Valid, 12926 SdHoareTripleChecker+Invalid, 2418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 2412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:28:41,788 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1966 Valid, 12926 Invalid, 2418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 2412 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-21 13:28:42,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582936 states. [2023-12-21 13:28:45,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582936 to 347352. [2023-12-21 13:28:46,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347352 states, 347351 states have (on average 1.1461432383957437) internal successors, (398114), 347351 states have internal predecessors, (398114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:28:47,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347352 states to 347352 states and 398114 transitions. [2023-12-21 13:28:47,891 INFO L78 Accepts]: Start accepts. Automaton has 347352 states and 398114 transitions. Word has length 198 [2023-12-21 13:28:47,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:28:47,891 INFO L495 AbstractCegarLoop]: Abstraction has 347352 states and 398114 transitions. [2023-12-21 13:28:47,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 10.61111111111111) internal successors, (191), 18 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:28:47,891 INFO L276 IsEmpty]: Start isEmpty. Operand 347352 states and 398114 transitions. [2023-12-21 13:28:47,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2023-12-21 13:28:47,994 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:28:47,995 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, 1] [2023-12-21 13:28:47,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2023-12-21 13:28:47,995 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:28:47,995 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:28:47,995 INFO L85 PathProgramCache]: Analyzing trace with hash -1673267035, now seen corresponding path program 1 times [2023-12-21 13:28:47,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:28:47,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857499246] [2023-12-21 13:28:47,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:28:47,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:28:48,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:28:48,946 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-12-21 13:28:48,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:28:48,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857499246] [2023-12-21 13:28:48,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857499246] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:28:48,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:28:48,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-12-21 13:28:48,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820233653] [2023-12-21 13:28:48,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:28:48,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-21 13:28:48,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:28:48,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-21 13:28:48,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2023-12-21 13:28:48,950 INFO L87 Difference]: Start difference. First operand 347352 states and 398114 transitions. Second operand has 13 states, 13 states have (on average 14.692307692307692) internal successors, (191), 13 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:28:52,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:28:52,099 INFO L93 Difference]: Finished difference Result 542870 states and 624243 transitions. [2023-12-21 13:28:52,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-21 13:28:52,099 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 14.692307692307692) internal successors, (191), 13 states have internal predecessors, (191), 0 states have call successors, (0), 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 198 [2023-12-21 13:28:52,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:28:52,990 INFO L225 Difference]: With dead ends: 542870 [2023-12-21 13:28:52,990 INFO L226 Difference]: Without dead ends: 530359 [2023-12-21 13:28:53,122 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2023-12-21 13:28:53,122 INFO L413 NwaCegarLoop]: 976 mSDtfsCounter, 1845 mSDsluCounter, 8193 mSDsCounter, 0 mSdLazyCounter, 1061 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1845 SdHoareTripleChecker+Valid, 9169 SdHoareTripleChecker+Invalid, 1065 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1061 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-21 13:28:53,122 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1845 Valid, 9169 Invalid, 1065 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1061 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-21 13:28:53,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530359 states. [2023-12-21 13:28:57,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530359 to 346129. [2023-12-21 13:28:57,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346129 states, 346128 states have (on average 1.1462146951416816) internal successors, (396737), 346128 states have internal predecessors, (396737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:28:58,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346129 states to 346129 states and 396737 transitions. [2023-12-21 13:28:58,536 INFO L78 Accepts]: Start accepts. Automaton has 346129 states and 396737 transitions. Word has length 198 [2023-12-21 13:28:58,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:28:58,536 INFO L495 AbstractCegarLoop]: Abstraction has 346129 states and 396737 transitions. [2023-12-21 13:28:58,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 14.692307692307692) internal successors, (191), 13 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:28:58,537 INFO L276 IsEmpty]: Start isEmpty. Operand 346129 states and 396737 transitions. [2023-12-21 13:28:58,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2023-12-21 13:28:58,601 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:28:58,601 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, 1] [2023-12-21 13:28:58,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2023-12-21 13:28:58,601 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:28:58,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:28:58,601 INFO L85 PathProgramCache]: Analyzing trace with hash 264450231, now seen corresponding path program 1 times [2023-12-21 13:28:58,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:28:58,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747248231] [2023-12-21 13:28:58,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:28:58,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:28:58,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:28:59,563 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:28:59,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:28:59,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747248231] [2023-12-21 13:28:59,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747248231] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:28:59,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [879997194] [2023-12-21 13:28:59,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:28:59,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:28:59,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:28:59,565 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 13:28:59,568 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-21 13:28:59,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:28:59,760 INFO L262 TraceCheckSpWp]: Trace formula consists of 701 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-21 13:28:59,764 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:29:00,686 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:29:00,687 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:29:01,738 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:29:01,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [879997194] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:29:01,738 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:29:01,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 12, 12] total 38 [2023-12-21 13:29:01,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571588209] [2023-12-21 13:29:01,739 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:29:01,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-12-21 13:29:01,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:29:01,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-12-21 13:29:01,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=1301, Unknown=0, NotChecked=0, Total=1406 [2023-12-21 13:29:01,740 INFO L87 Difference]: Start difference. First operand 346129 states and 396737 transitions. Second operand has 38 states, 38 states have (on average 14.81578947368421) internal successors, (563), 38 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:30:12,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:30:12,248 INFO L93 Difference]: Finished difference Result 1882540 states and 2182961 transitions. [2023-12-21 13:30:12,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 438 states. [2023-12-21 13:30:12,248 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 14.81578947368421) internal successors, (563), 38 states have internal predecessors, (563), 0 states have call successors, (0), 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 198 [2023-12-21 13:30:12,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:30:16,685 INFO L225 Difference]: With dead ends: 1882540 [2023-12-21 13:30:16,685 INFO L226 Difference]: Without dead ends: 1798863 [2023-12-21 13:30:17,526 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 848 GetRequests, 376 SyntacticMatches, 0 SemanticMatches, 472 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94908 ImplicationChecksByTransitivity, 52.3s TimeCoverageRelationStatistics Valid=25461, Invalid=198741, Unknown=0, NotChecked=0, Total=224202 [2023-12-21 13:30:17,527 INFO L413 NwaCegarLoop]: 976 mSDtfsCounter, 19016 mSDsluCounter, 21808 mSDsCounter, 0 mSdLazyCounter, 17464 mSolverCounterSat, 315 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19016 SdHoareTripleChecker+Valid, 22784 SdHoareTripleChecker+Invalid, 17779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 315 IncrementalHoareTripleChecker+Valid, 17464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.6s IncrementalHoareTripleChecker+Time [2023-12-21 13:30:17,527 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19016 Valid, 22784 Invalid, 17779 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [315 Valid, 17464 Invalid, 0 Unknown, 0 Unchecked, 11.6s Time] [2023-12-21 13:30:18,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1798863 states. [2023-12-21 13:30:29,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1798863 to 406098. [2023-12-21 13:30:30,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 406098 states, 406097 states have (on average 1.1510427311701392) internal successors, (467435), 406097 states have internal predecessors, (467435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:30:31,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406098 states to 406098 states and 467435 transitions. [2023-12-21 13:30:31,438 INFO L78 Accepts]: Start accepts. Automaton has 406098 states and 467435 transitions. Word has length 198 [2023-12-21 13:30:31,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:30:31,438 INFO L495 AbstractCegarLoop]: Abstraction has 406098 states and 467435 transitions. [2023-12-21 13:30:31,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 14.81578947368421) internal successors, (563), 38 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:30:31,439 INFO L276 IsEmpty]: Start isEmpty. Operand 406098 states and 467435 transitions. [2023-12-21 13:30:31,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2023-12-21 13:30:31,512 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:30:31,512 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, 1] [2023-12-21 13:30:31,523 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-21 13:30:31,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:30:31,713 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:30:31,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:30:31,713 INFO L85 PathProgramCache]: Analyzing trace with hash -553378213, now seen corresponding path program 1 times [2023-12-21 13:30:31,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:30:31,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658588861] [2023-12-21 13:30:31,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:30:31,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:30:31,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:30:31,805 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-12-21 13:30:31,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:30:31,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658588861] [2023-12-21 13:30:31,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658588861] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:30:31,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:30:31,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 13:30:31,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047353829] [2023-12-21 13:30:31,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:30:31,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 13:30:31,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:30:31,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 13:30:31,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:30:31,806 INFO L87 Difference]: Start difference. First operand 406098 states and 467435 transitions. Second operand has 5 states, 5 states have (on average 38.2) internal successors, (191), 5 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)