/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_floodmax.3.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 13:02:50,007 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 13:02:50,061 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 13:02:50,065 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 13:02:50,065 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 13:02:50,100 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 13:02:50,100 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 13:02:50,101 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 13:02:50,101 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 13:02:50,105 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 13:02:50,105 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 13:02:50,105 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 13:02:50,106 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 13:02:50,107 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 13:02:50,107 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 13:02:50,107 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 13:02:50,108 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 13:02:50,108 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 13:02:50,108 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-21 13:02:50,108 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 13:02:50,109 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 13:02:50,109 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 13:02:50,109 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 13:02:50,109 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 13:02:50,110 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 13:02:50,110 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 13:02:50,110 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 13:02:50,110 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 13:02:50,111 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 13:02:50,111 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 13:02:50,112 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 13:02:50,112 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 13:02:50,112 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 13:02:50,112 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 13:02:50,113 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 13:02:50,113 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 13:02:50,113 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-21 13:02:50,113 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-21 13:02:50,113 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 13:02:50,113 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 13:02:50,114 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 13:02:50,114 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 13:02:50,114 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 13:02:50,114 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-21 13:02:50,348 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 13:02:50,374 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 13:02:50,376 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 13:02:50,377 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 13:02:50,377 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 13:02:50,378 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2023-12-21 13:02:51,621 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 13:02:51,848 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 13:02:51,849 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2023-12-21 13:02:51,861 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cdd92dbdc/71efffd013444be48b9c531830c9a9ee/FLAG89af2c06e [2023-12-21 13:02:51,872 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cdd92dbdc/71efffd013444be48b9c531830c9a9ee [2023-12-21 13:02:51,875 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 13:02:51,876 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 13:02:51,877 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 13:02:51,877 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 13:02:51,883 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 13:02:51,884 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 01:02:51" (1/1) ... [2023-12-21 13:02:51,884 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@115f5dd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:02:51, skipping insertion in model container [2023-12-21 13:02:51,884 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 01:02:51" (1/1) ... [2023-12-21 13:02:51,936 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 13:02:52,136 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_floodmax.3.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[7349,7362] [2023-12-21 13:02:52,179 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 13:02:52,198 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 13:02:52,245 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_floodmax.3.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[7349,7362] [2023-12-21 13:02:52,262 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 13:02:52,286 INFO L206 MainTranslator]: Completed translation [2023-12-21 13:02:52,287 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:02:52 WrapperNode [2023-12-21 13:02:52,287 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 13:02:52,288 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 13:02:52,288 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 13:02:52,288 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 13:02:52,293 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:02:52" (1/1) ... [2023-12-21 13:02:52,303 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:02:52" (1/1) ... [2023-12-21 13:02:52,346 INFO L138 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 625 [2023-12-21 13:02:52,347 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 13:02:52,347 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 13:02:52,348 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 13:02:52,348 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 13:02:52,356 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:02:52" (1/1) ... [2023-12-21 13:02:52,356 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:02:52" (1/1) ... [2023-12-21 13:02:52,363 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:02:52" (1/1) ... [2023-12-21 13:02:52,378 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 13:02:52,379 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:02:52" (1/1) ... [2023-12-21 13:02:52,379 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:02:52" (1/1) ... [2023-12-21 13:02:52,389 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:02:52" (1/1) ... [2023-12-21 13:02:52,393 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:02:52" (1/1) ... [2023-12-21 13:02:52,396 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:02:52" (1/1) ... [2023-12-21 13:02:52,398 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:02:52" (1/1) ... [2023-12-21 13:02:52,402 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 13:02:52,403 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 13:02:52,403 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 13:02:52,403 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 13:02:52,404 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:02:52" (1/1) ... [2023-12-21 13:02:52,409 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 13:02:52,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:02:52,441 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 13:02:52,451 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 13:02:52,471 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 13:02:52,472 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-21 13:02:52,472 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 13:02:52,473 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 13:02:52,615 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 13:02:52,617 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 13:02:53,096 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 13:02:53,133 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 13:02:53,133 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-21 13:02:53,134 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 01:02:53 BoogieIcfgContainer [2023-12-21 13:02:53,134 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 13:02:53,135 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 13:02:53,135 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 13:02:53,138 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 13:02:53,138 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 01:02:51" (1/3) ... [2023-12-21 13:02:53,139 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bcc059d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 01:02:53, skipping insertion in model container [2023-12-21 13:02:53,139 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:02:52" (2/3) ... [2023-12-21 13:02:53,140 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bcc059d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 01:02:53, skipping insertion in model container [2023-12-21 13:02:53,140 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 01:02:53" (3/3) ... [2023-12-21 13:02:53,141 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2023-12-21 13:02:53,157 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 13:02:53,158 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-21 13:02:53,214 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 13:02:53,221 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;@17fc0ec3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 13:02:53,221 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-21 13:02:53,228 INFO L276 IsEmpty]: Start isEmpty. Operand has 138 states, 136 states have (on average 1.7720588235294117) internal successors, (241), 137 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:02:53,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-21 13:02:53,238 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:02:53,239 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] [2023-12-21 13:02:53,239 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:02:53,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:02:53,243 INFO L85 PathProgramCache]: Analyzing trace with hash 1083985671, now seen corresponding path program 1 times [2023-12-21 13:02:53,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:02:53,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573991917] [2023-12-21 13:02:53,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:02:53,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:02:53,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:02:53,709 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 13:02:53,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:02:53,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573991917] [2023-12-21 13:02:53,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573991917] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:02:53,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:02:53,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:02:53,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023294567] [2023-12-21 13:02:53,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:02:53,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:02:53,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:02:53,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:02:53,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:02:53,753 INFO L87 Difference]: Start difference. First operand has 138 states, 136 states have (on average 1.7720588235294117) internal successors, (241), 137 states have internal predecessors, (241), 0 states have call successors, (0), 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 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:02:53,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:02:53,868 INFO L93 Difference]: Finished difference Result 299 states and 508 transitions. [2023-12-21 13:02:53,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:02:53,871 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2023-12-21 13:02:53,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:02:53,882 INFO L225 Difference]: With dead ends: 299 [2023-12-21 13:02:53,882 INFO L226 Difference]: Without dead ends: 210 [2023-12-21 13:02:53,885 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 13:02:53,887 INFO L413 NwaCegarLoop]: 231 mSDtfsCounter, 137 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 410 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 13:02:53,889 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 410 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 13:02:53,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2023-12-21 13:02:53,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 207. [2023-12-21 13:02:53,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 206 states have (on average 1.5825242718446602) internal successors, (326), 206 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:02:53,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 326 transitions. [2023-12-21 13:02:53,956 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 326 transitions. Word has length 55 [2023-12-21 13:02:53,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:02:53,956 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 326 transitions. [2023-12-21 13:02:53,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:02:53,956 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 326 transitions. [2023-12-21 13:02:53,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-12-21 13:02:53,964 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:02:53,964 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] [2023-12-21 13:02:53,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-21 13:02:53,965 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:02:53,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:02:53,965 INFO L85 PathProgramCache]: Analyzing trace with hash 279150516, now seen corresponding path program 1 times [2023-12-21 13:02:53,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:02:53,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914489966] [2023-12-21 13:02:53,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:02:53,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:02:54,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:02:54,114 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 13:02:54,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:02:54,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914489966] [2023-12-21 13:02:54,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914489966] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:02:54,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:02:54,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:02:54,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472610325] [2023-12-21 13:02:54,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:02:54,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:02:54,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:02:54,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:02:54,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:02:54,123 INFO L87 Difference]: Start difference. First operand 207 states and 326 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:02:54,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:02:54,167 INFO L93 Difference]: Finished difference Result 501 states and 810 transitions. [2023-12-21 13:02:54,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:02:54,168 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2023-12-21 13:02:54,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:02:54,170 INFO L225 Difference]: With dead ends: 501 [2023-12-21 13:02:54,170 INFO L226 Difference]: Without dead ends: 347 [2023-12-21 13:02:54,171 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 13:02:54,172 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 118 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 389 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:02:54,172 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 389 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:02:54,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2023-12-21 13:02:54,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 343. [2023-12-21 13:02:54,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 342 states have (on average 1.6023391812865497) internal successors, (548), 342 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:02:54,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 548 transitions. [2023-12-21 13:02:54,185 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 548 transitions. Word has length 57 [2023-12-21 13:02:54,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:02:54,186 INFO L495 AbstractCegarLoop]: Abstraction has 343 states and 548 transitions. [2023-12-21 13:02:54,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:02:54,186 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 548 transitions. [2023-12-21 13:02:54,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-21 13:02:54,187 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:02:54,187 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] [2023-12-21 13:02:54,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-21 13:02:54,188 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:02:54,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:02:54,188 INFO L85 PathProgramCache]: Analyzing trace with hash 378017127, now seen corresponding path program 1 times [2023-12-21 13:02:54,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:02:54,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926615897] [2023-12-21 13:02:54,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:02:54,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:02:54,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:02:54,318 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 13:02:54,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:02:54,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926615897] [2023-12-21 13:02:54,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926615897] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:02:54,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:02:54,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:02:54,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891392195] [2023-12-21 13:02:54,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:02:54,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:02:54,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:02:54,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:02:54,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:02:54,323 INFO L87 Difference]: Start difference. First operand 343 states and 548 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:02:54,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:02:54,349 INFO L93 Difference]: Finished difference Result 895 states and 1450 transitions. [2023-12-21 13:02:54,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:02:54,350 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2023-12-21 13:02:54,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:02:54,353 INFO L225 Difference]: With dead ends: 895 [2023-12-21 13:02:54,353 INFO L226 Difference]: Without dead ends: 605 [2023-12-21 13:02:54,359 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 13:02:54,361 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 113 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 390 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:02:54,363 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 390 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:02:54,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 605 states. [2023-12-21 13:02:54,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 605 to 599. [2023-12-21 13:02:54,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 598 states have (on average 1.605351170568562) internal successors, (960), 598 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:02:54,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 960 transitions. [2023-12-21 13:02:54,391 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 960 transitions. Word has length 59 [2023-12-21 13:02:54,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:02:54,394 INFO L495 AbstractCegarLoop]: Abstraction has 599 states and 960 transitions. [2023-12-21 13:02:54,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:02:54,398 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 960 transitions. [2023-12-21 13:02:54,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-21 13:02:54,400 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:02:54,400 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] [2023-12-21 13:02:54,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-21 13:02:54,400 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:02:54,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:02:54,401 INFO L85 PathProgramCache]: Analyzing trace with hash 343933908, now seen corresponding path program 1 times [2023-12-21 13:02:54,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:02:54,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847741634] [2023-12-21 13:02:54,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:02:54,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:02:54,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:02:54,539 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 13:02:54,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:02:54,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847741634] [2023-12-21 13:02:54,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847741634] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:02:54,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:02:54,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 13:02:54,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428615642] [2023-12-21 13:02:54,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:02:54,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 13:02:54,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:02:54,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 13:02:54,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:02:54,543 INFO L87 Difference]: Start difference. First operand 599 states and 960 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:02:54,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:02:54,687 INFO L93 Difference]: Finished difference Result 2587 states and 4246 transitions. [2023-12-21 13:02:54,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 13:02:54,687 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 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 61 [2023-12-21 13:02:54,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:02:54,696 INFO L225 Difference]: With dead ends: 2587 [2023-12-21 13:02:54,697 INFO L226 Difference]: Without dead ends: 2041 [2023-12-21 13:02:54,698 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-21 13:02:54,704 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 855 mSDsluCounter, 1109 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 855 SdHoareTripleChecker+Valid, 1310 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 13:02:54,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [855 Valid, 1310 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 13:02:54,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2041 states. [2023-12-21 13:02:54,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2041 to 1076. [2023-12-21 13:02:54,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1076 states, 1075 states have (on average 1.6167441860465117) internal successors, (1738), 1075 states have internal predecessors, (1738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:02:54,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1076 states to 1076 states and 1738 transitions. [2023-12-21 13:02:54,733 INFO L78 Accepts]: Start accepts. Automaton has 1076 states and 1738 transitions. Word has length 61 [2023-12-21 13:02:54,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:02:54,735 INFO L495 AbstractCegarLoop]: Abstraction has 1076 states and 1738 transitions. [2023-12-21 13:02:54,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:02:54,735 INFO L276 IsEmpty]: Start isEmpty. Operand 1076 states and 1738 transitions. [2023-12-21 13:02:54,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-21 13:02:54,737 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:02:54,737 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:02:54,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-21 13:02:54,737 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:02:54,738 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:02:54,738 INFO L85 PathProgramCache]: Analyzing trace with hash 2009512368, now seen corresponding path program 1 times [2023-12-21 13:02:54,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:02:54,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138599654] [2023-12-21 13:02:54,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:02:54,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:02:54,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:02:54,866 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 13:02:54,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:02:54,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138599654] [2023-12-21 13:02:54,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138599654] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:02:54,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:02:54,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 13:02:54,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926887721] [2023-12-21 13:02:54,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:02:54,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 13:02:54,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:02:54,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 13:02:54,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 13:02:54,868 INFO L87 Difference]: Start difference. First operand 1076 states and 1738 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:02:54,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:02:54,941 INFO L93 Difference]: Finished difference Result 3141 states and 5145 transitions. [2023-12-21 13:02:54,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 13:02:54,942 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 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 62 [2023-12-21 13:02:54,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:02:54,952 INFO L225 Difference]: With dead ends: 3141 [2023-12-21 13:02:54,952 INFO L226 Difference]: Without dead ends: 2118 [2023-12-21 13:02:54,954 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 13:02:54,954 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 404 mSDsluCounter, 505 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 404 SdHoareTripleChecker+Valid, 707 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:02:54,954 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [404 Valid, 707 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:02:54,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2118 states. [2023-12-21 13:02:55,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2118 to 1588. [2023-12-21 13:02:55,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1588 states, 1587 states have (on average 1.6250787649653433) internal successors, (2579), 1587 states have internal predecessors, (2579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:02:55,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1588 states to 1588 states and 2579 transitions. [2023-12-21 13:02:55,018 INFO L78 Accepts]: Start accepts. Automaton has 1588 states and 2579 transitions. Word has length 62 [2023-12-21 13:02:55,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:02:55,019 INFO L495 AbstractCegarLoop]: Abstraction has 1588 states and 2579 transitions. [2023-12-21 13:02:55,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:02:55,020 INFO L276 IsEmpty]: Start isEmpty. Operand 1588 states and 2579 transitions. [2023-12-21 13:02:55,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-21 13:02:55,021 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:02:55,022 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] [2023-12-21 13:02:55,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-21 13:02:55,022 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:02:55,022 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:02:55,022 INFO L85 PathProgramCache]: Analyzing trace with hash 2107395099, now seen corresponding path program 1 times [2023-12-21 13:02:55,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:02:55,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598010723] [2023-12-21 13:02:55,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:02:55,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:02:55,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:02:55,146 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 13:02:55,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:02:55,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598010723] [2023-12-21 13:02:55,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598010723] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:02:55,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:02:55,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 13:02:55,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718694172] [2023-12-21 13:02:55,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:02:55,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 13:02:55,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:02:55,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 13:02:55,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 13:02:55,149 INFO L87 Difference]: Start difference. First operand 1588 states and 2579 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:02:55,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:02:55,225 INFO L93 Difference]: Finished difference Result 4609 states and 7543 transitions. [2023-12-21 13:02:55,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 13:02:55,226 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2023-12-21 13:02:55,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:02:55,237 INFO L225 Difference]: With dead ends: 4609 [2023-12-21 13:02:55,237 INFO L226 Difference]: Without dead ends: 3074 [2023-12-21 13:02:55,239 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 13:02:55,240 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 402 mSDsluCounter, 507 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 402 SdHoareTripleChecker+Valid, 713 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:02:55,240 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [402 Valid, 713 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:02:55,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3074 states. [2023-12-21 13:02:55,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3074 to 2319. [2023-12-21 13:02:55,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2319 states, 2318 states have (on average 1.624676445211389) internal successors, (3766), 2318 states have internal predecessors, (3766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:02:55,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2319 states to 2319 states and 3766 transitions. [2023-12-21 13:02:55,302 INFO L78 Accepts]: Start accepts. Automaton has 2319 states and 3766 transitions. Word has length 63 [2023-12-21 13:02:55,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:02:55,302 INFO L495 AbstractCegarLoop]: Abstraction has 2319 states and 3766 transitions. [2023-12-21 13:02:55,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:02:55,303 INFO L276 IsEmpty]: Start isEmpty. Operand 2319 states and 3766 transitions. [2023-12-21 13:02:55,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-21 13:02:55,304 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:02:55,304 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] [2023-12-21 13:02:55,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-21 13:02:55,304 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:02:55,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:02:55,305 INFO L85 PathProgramCache]: Analyzing trace with hash 2100793239, now seen corresponding path program 1 times [2023-12-21 13:02:55,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:02:55,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32202597] [2023-12-21 13:02:55,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:02:55,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:02:55,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:02:55,347 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 13:02:55,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:02:55,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32202597] [2023-12-21 13:02:55,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32202597] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:02:55,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:02:55,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:02:55,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094463488] [2023-12-21 13:02:55,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:02:55,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:02:55,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:02:55,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:02:55,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:02:55,349 INFO L87 Difference]: Start difference. First operand 2319 states and 3766 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:02:55,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:02:55,378 INFO L93 Difference]: Finished difference Result 5109 states and 8341 transitions. [2023-12-21 13:02:55,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:02:55,379 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 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 64 [2023-12-21 13:02:55,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:02:55,391 INFO L225 Difference]: With dead ends: 5109 [2023-12-21 13:02:55,391 INFO L226 Difference]: Without dead ends: 3500 [2023-12-21 13:02:55,394 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:02:55,395 INFO L413 NwaCegarLoop]: 276 mSDtfsCounter, 117 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 461 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:02:55,395 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 461 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:02:55,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3500 states. [2023-12-21 13:02:55,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3500 to 3498. [2023-12-21 13:02:55,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3498 states, 3497 states have (on average 1.6219616814412354) internal successors, (5672), 3497 states have internal predecessors, (5672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:02:55,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3498 states to 3498 states and 5672 transitions. [2023-12-21 13:02:55,461 INFO L78 Accepts]: Start accepts. Automaton has 3498 states and 5672 transitions. Word has length 64 [2023-12-21 13:02:55,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:02:55,461 INFO L495 AbstractCegarLoop]: Abstraction has 3498 states and 5672 transitions. [2023-12-21 13:02:55,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:02:55,461 INFO L276 IsEmpty]: Start isEmpty. Operand 3498 states and 5672 transitions. [2023-12-21 13:02:55,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-21 13:02:55,462 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:02:55,462 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] [2023-12-21 13:02:55,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-21 13:02:55,463 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:02:55,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:02:55,463 INFO L85 PathProgramCache]: Analyzing trace with hash -229150136, now seen corresponding path program 1 times [2023-12-21 13:02:55,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:02:55,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581794977] [2023-12-21 13:02:55,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:02:55,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:02:55,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:02:55,504 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 13:02:55,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:02:55,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581794977] [2023-12-21 13:02:55,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581794977] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:02:55,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:02:55,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:02:55,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053038615] [2023-12-21 13:02:55,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:02:55,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:02:55,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:02:55,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:02:55,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:02:55,506 INFO L87 Difference]: Start difference. First operand 3498 states and 5672 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:02:55,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:02:55,543 INFO L93 Difference]: Finished difference Result 6916 states and 11272 transitions. [2023-12-21 13:02:55,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:02:55,543 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 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 64 [2023-12-21 13:02:55,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:02:55,560 INFO L225 Difference]: With dead ends: 6916 [2023-12-21 13:02:55,560 INFO L226 Difference]: Without dead ends: 4916 [2023-12-21 13:02:55,564 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 13:02:55,564 INFO L413 NwaCegarLoop]: 258 mSDtfsCounter, 112 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 444 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:02:55,564 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 444 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:02:55,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4916 states. [2023-12-21 13:02:55,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4916 to 4914. [2023-12-21 13:02:55,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4914 states, 4913 states have (on average 1.618155912884185) internal successors, (7950), 4913 states have internal predecessors, (7950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:02:55,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4914 states to 4914 states and 7950 transitions. [2023-12-21 13:02:55,688 INFO L78 Accepts]: Start accepts. Automaton has 4914 states and 7950 transitions. Word has length 64 [2023-12-21 13:02:55,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:02:55,688 INFO L495 AbstractCegarLoop]: Abstraction has 4914 states and 7950 transitions. [2023-12-21 13:02:55,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:02:55,689 INFO L276 IsEmpty]: Start isEmpty. Operand 4914 states and 7950 transitions. [2023-12-21 13:02:55,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-21 13:02:55,690 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:02:55,690 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] [2023-12-21 13:02:55,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-21 13:02:55,690 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:02:55,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:02:55,691 INFO L85 PathProgramCache]: Analyzing trace with hash 851350487, now seen corresponding path program 1 times [2023-12-21 13:02:55,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:02:55,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501558749] [2023-12-21 13:02:55,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:02:55,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:02:55,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:02:55,756 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 13:02:55,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:02:55,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501558749] [2023-12-21 13:02:55,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501558749] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:02:55,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:02:55,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 13:02:55,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790054759] [2023-12-21 13:02:55,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:02:55,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 13:02:55,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:02:55,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 13:02:55,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 13:02:55,758 INFO L87 Difference]: Start difference. First operand 4914 states and 7950 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:02:55,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:02:55,860 INFO L93 Difference]: Finished difference Result 15143 states and 24630 transitions. [2023-12-21 13:02:55,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 13:02:55,861 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 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 64 [2023-12-21 13:02:55,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:02:55,905 INFO L225 Difference]: With dead ends: 15143 [2023-12-21 13:02:55,906 INFO L226 Difference]: Without dead ends: 10362 [2023-12-21 13:02:55,916 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 13:02:55,918 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 400 mSDsluCounter, 383 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 400 SdHoareTripleChecker+Valid, 581 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:02:55,918 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [400 Valid, 581 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:02:55,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10362 states. [2023-12-21 13:02:56,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10362 to 7612. [2023-12-21 13:02:56,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7612 states, 7611 states have (on average 1.6145053212455656) internal successors, (12288), 7611 states have internal predecessors, (12288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:02:56,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7612 states to 7612 states and 12288 transitions. [2023-12-21 13:02:56,095 INFO L78 Accepts]: Start accepts. Automaton has 7612 states and 12288 transitions. Word has length 64 [2023-12-21 13:02:56,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:02:56,095 INFO L495 AbstractCegarLoop]: Abstraction has 7612 states and 12288 transitions. [2023-12-21 13:02:56,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:02:56,096 INFO L276 IsEmpty]: Start isEmpty. Operand 7612 states and 12288 transitions. [2023-12-21 13:02:56,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-21 13:02:56,096 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:02:56,096 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] [2023-12-21 13:02:56,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-21 13:02:56,097 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:02:56,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:02:56,097 INFO L85 PathProgramCache]: Analyzing trace with hash 1956399438, now seen corresponding path program 1 times [2023-12-21 13:02:56,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:02:56,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193558577] [2023-12-21 13:02:56,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:02:56,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:02:56,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:02:56,145 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 13:02:56,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:02:56,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193558577] [2023-12-21 13:02:56,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193558577] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:02:56,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:02:56,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:02:56,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076542115] [2023-12-21 13:02:56,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:02:56,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:02:56,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:02:56,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:02:56,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:02:56,147 INFO L87 Difference]: Start difference. First operand 7612 states and 12288 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:02:56,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:02:56,270 INFO L93 Difference]: Finished difference Result 16686 states and 27283 transitions. [2023-12-21 13:02:56,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:02:56,270 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 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 64 [2023-12-21 13:02:56,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:02:56,290 INFO L225 Difference]: With dead ends: 16686 [2023-12-21 13:02:56,290 INFO L226 Difference]: Without dead ends: 11161 [2023-12-21 13:02:56,300 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 13:02:56,300 INFO L413 NwaCegarLoop]: 303 mSDtfsCounter, 122 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 487 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:02:56,301 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 487 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:02:56,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11161 states. [2023-12-21 13:02:56,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11161 to 11159. [2023-12-21 13:02:56,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11159 states, 11158 states have (on average 1.6189281233195914) internal successors, (18064), 11158 states have internal predecessors, (18064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:02:56,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11159 states to 11159 states and 18064 transitions. [2023-12-21 13:02:56,468 INFO L78 Accepts]: Start accepts. Automaton has 11159 states and 18064 transitions. Word has length 64 [2023-12-21 13:02:56,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:02:56,469 INFO L495 AbstractCegarLoop]: Abstraction has 11159 states and 18064 transitions. [2023-12-21 13:02:56,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:02:56,469 INFO L276 IsEmpty]: Start isEmpty. Operand 11159 states and 18064 transitions. [2023-12-21 13:02:56,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-21 13:02:56,470 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:02:56,470 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] [2023-12-21 13:02:56,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-21 13:02:56,470 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:02:56,471 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:02:56,471 INFO L85 PathProgramCache]: Analyzing trace with hash 586720488, now seen corresponding path program 1 times [2023-12-21 13:02:56,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:02:56,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704160045] [2023-12-21 13:02:56,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:02:56,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:02:56,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:02:56,650 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 13:02:56,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:02:56,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704160045] [2023-12-21 13:02:56,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704160045] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:02:56,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:02:56,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 13:02:56,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297714429] [2023-12-21 13:02:56,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:02:56,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 13:02:56,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:02:56,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 13:02:56,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:02:56,653 INFO L87 Difference]: Start difference. First operand 11159 states and 18064 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:02:56,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:02:56,780 INFO L93 Difference]: Finished difference Result 22240 states and 36019 transitions. [2023-12-21 13:02:56,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 13:02:56,781 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2023-12-21 13:02:56,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:02:56,844 INFO L225 Difference]: With dead ends: 22240 [2023-12-21 13:02:56,844 INFO L226 Difference]: Without dead ends: 11161 [2023-12-21 13:02:56,853 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 13:02:56,854 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 227 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 577 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:02:56,854 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [227 Valid, 577 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:02:56,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11161 states. [2023-12-21 13:02:56,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11161 to 11159. [2023-12-21 13:02:57,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11159 states, 11158 states have (on average 1.6077253988169924) internal successors, (17939), 11158 states have internal predecessors, (17939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:02:57,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11159 states to 11159 states and 17939 transitions. [2023-12-21 13:02:57,030 INFO L78 Accepts]: Start accepts. Automaton has 11159 states and 17939 transitions. Word has length 66 [2023-12-21 13:02:57,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:02:57,031 INFO L495 AbstractCegarLoop]: Abstraction has 11159 states and 17939 transitions. [2023-12-21 13:02:57,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:02:57,031 INFO L276 IsEmpty]: Start isEmpty. Operand 11159 states and 17939 transitions. [2023-12-21 13:02:57,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-12-21 13:02:57,031 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:02:57,031 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] [2023-12-21 13:02:57,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-21 13:02:57,032 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:02:57,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:02:57,032 INFO L85 PathProgramCache]: Analyzing trace with hash 719582349, now seen corresponding path program 1 times [2023-12-21 13:02:57,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:02:57,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141135781] [2023-12-21 13:02:57,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:02:57,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:02:57,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:02:57,190 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 13:02:57,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:02:57,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141135781] [2023-12-21 13:02:57,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141135781] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:02:57,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:02:57,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 13:02:57,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403451100] [2023-12-21 13:02:57,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:02:57,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 13:02:57,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:02:57,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 13:02:57,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:02:57,192 INFO L87 Difference]: Start difference. First operand 11159 states and 17939 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:02:57,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:02:57,427 INFO L93 Difference]: Finished difference Result 31942 states and 51511 transitions. [2023-12-21 13:02:57,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 13:02:57,427 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 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 69 [2023-12-21 13:02:57,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:02:57,468 INFO L225 Difference]: With dead ends: 31942 [2023-12-21 13:02:57,469 INFO L226 Difference]: Without dead ends: 20863 [2023-12-21 13:02:57,483 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 13:02:57,484 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 223 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 581 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:02:57,485 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [223 Valid, 581 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:02:57,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20863 states. [2023-12-21 13:02:57,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20863 to 20861. [2023-12-21 13:02:57,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20861 states, 20860 states have (on average 1.595973154362416) internal successors, (33292), 20860 states have internal predecessors, (33292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:02:57,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20861 states to 20861 states and 33292 transitions. [2023-12-21 13:02:57,911 INFO L78 Accepts]: Start accepts. Automaton has 20861 states and 33292 transitions. Word has length 69 [2023-12-21 13:02:57,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:02:57,911 INFO L495 AbstractCegarLoop]: Abstraction has 20861 states and 33292 transitions. [2023-12-21 13:02:57,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:02:57,911 INFO L276 IsEmpty]: Start isEmpty. Operand 20861 states and 33292 transitions. [2023-12-21 13:02:57,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-12-21 13:02:57,912 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:02:57,912 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] [2023-12-21 13:02:57,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-21 13:02:57,912 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:02:57,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:02:57,913 INFO L85 PathProgramCache]: Analyzing trace with hash 830307045, now seen corresponding path program 1 times [2023-12-21 13:02:57,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:02:57,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547322715] [2023-12-21 13:02:57,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:02:57,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:02:57,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:02:58,147 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 13:02:58,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:02:58,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547322715] [2023-12-21 13:02:58,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547322715] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:02:58,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:02:58,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 13:02:58,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579360084] [2023-12-21 13:02:58,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:02:58,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 13:02:58,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:02:58,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 13:02:58,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:02:58,149 INFO L87 Difference]: Start difference. First operand 20861 states and 33292 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:02:58,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:02:58,315 INFO L93 Difference]: Finished difference Result 39973 states and 63514 transitions. [2023-12-21 13:02:58,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 13:02:58,316 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 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 70 [2023-12-21 13:02:58,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:02:58,403 INFO L225 Difference]: With dead ends: 39973 [2023-12-21 13:02:58,404 INFO L226 Difference]: Without dead ends: 39971 [2023-12-21 13:02:58,421 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 13:02:58,422 INFO L413 NwaCegarLoop]: 282 mSDtfsCounter, 250 mSDsluCounter, 693 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 975 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:02:58,422 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [250 Valid, 975 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:02:58,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39971 states. [2023-12-21 13:02:58,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39971 to 21585. [2023-12-21 13:02:58,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21585 states, 21584 states have (on average 1.575565233506301) internal successors, (34007), 21584 states have internal predecessors, (34007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:02:58,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21585 states to 21585 states and 34007 transitions. [2023-12-21 13:02:58,945 INFO L78 Accepts]: Start accepts. Automaton has 21585 states and 34007 transitions. Word has length 70 [2023-12-21 13:02:58,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:02:58,945 INFO L495 AbstractCegarLoop]: Abstraction has 21585 states and 34007 transitions. [2023-12-21 13:02:58,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:02:58,945 INFO L276 IsEmpty]: Start isEmpty. Operand 21585 states and 34007 transitions. [2023-12-21 13:02:58,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-21 13:02:58,947 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:02:58,947 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:02:58,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-21 13:02:58,947 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:02:58,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:02:58,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1291649415, now seen corresponding path program 1 times [2023-12-21 13:02:58,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:02:58,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923776139] [2023-12-21 13:02:58,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:02:58,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:02:58,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:02:59,052 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-21 13:02:59,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:02:59,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923776139] [2023-12-21 13:02:59,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923776139] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:02:59,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:02:59,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 13:02:59,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109381681] [2023-12-21 13:02:59,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:02:59,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 13:02:59,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:02:59,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 13:02:59,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:02:59,054 INFO L87 Difference]: Start difference. First operand 21585 states and 34007 transitions. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:02:59,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:02:59,381 INFO L93 Difference]: Finished difference Result 52601 states and 83211 transitions. [2023-12-21 13:02:59,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 13:02:59,393 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 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 92 [2023-12-21 13:02:59,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:02:59,454 INFO L225 Difference]: With dead ends: 52601 [2023-12-21 13:02:59,455 INFO L226 Difference]: Without dead ends: 42409 [2023-12-21 13:02:59,480 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-21 13:02:59,481 INFO L413 NwaCegarLoop]: 337 mSDtfsCounter, 512 mSDsluCounter, 595 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 512 SdHoareTripleChecker+Valid, 932 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:02:59,481 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [512 Valid, 932 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:02:59,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42409 states. [2023-12-21 13:02:59,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42409 to 33119. [2023-12-21 13:02:59,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33119 states, 33118 states have (on average 1.5748233588984841) internal successors, (52155), 33118 states have internal predecessors, (52155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:02:59,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33119 states to 33119 states and 52155 transitions. [2023-12-21 13:02:59,944 INFO L78 Accepts]: Start accepts. Automaton has 33119 states and 52155 transitions. Word has length 92 [2023-12-21 13:02:59,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:02:59,944 INFO L495 AbstractCegarLoop]: Abstraction has 33119 states and 52155 transitions. [2023-12-21 13:02:59,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:02:59,945 INFO L276 IsEmpty]: Start isEmpty. Operand 33119 states and 52155 transitions. [2023-12-21 13:02:59,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-21 13:02:59,946 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:02:59,947 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:02:59,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-21 13:02:59,947 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:02:59,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:02:59,947 INFO L85 PathProgramCache]: Analyzing trace with hash 673374506, now seen corresponding path program 1 times [2023-12-21 13:02:59,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:02:59,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713665835] [2023-12-21 13:02:59,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:02:59,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:02:59,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:03:00,053 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-21 13:03:00,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:03:00,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713665835] [2023-12-21 13:03:00,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713665835] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:03:00,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:03:00,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 13:03:00,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386422339] [2023-12-21 13:03:00,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:03:00,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 13:03:00,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:03:00,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 13:03:00,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:03:00,056 INFO L87 Difference]: Start difference. First operand 33119 states and 52155 transitions. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:03:00,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:03:00,375 INFO L93 Difference]: Finished difference Result 56653 states and 89647 transitions. [2023-12-21 13:03:00,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 13:03:00,376 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 0 states have call successors, (0), 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 92 [2023-12-21 13:03:00,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:03:00,454 INFO L225 Difference]: With dead ends: 56653 [2023-12-21 13:03:00,455 INFO L226 Difference]: Without dead ends: 46461 [2023-12-21 13:03:00,480 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-21 13:03:00,481 INFO L413 NwaCegarLoop]: 344 mSDtfsCounter, 515 mSDsluCounter, 585 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 515 SdHoareTripleChecker+Valid, 929 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:03:00,481 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [515 Valid, 929 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:03:00,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46461 states. [2023-12-21 13:03:01,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46461 to 44807. [2023-12-21 13:03:01,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44807 states, 44806 states have (on average 1.5761058786769628) internal successors, (70619), 44806 states have internal predecessors, (70619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:03:01,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44807 states to 44807 states and 70619 transitions. [2023-12-21 13:03:01,113 INFO L78 Accepts]: Start accepts. Automaton has 44807 states and 70619 transitions. Word has length 92 [2023-12-21 13:03:01,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:03:01,113 INFO L495 AbstractCegarLoop]: Abstraction has 44807 states and 70619 transitions. [2023-12-21 13:03:01,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:03:01,114 INFO L276 IsEmpty]: Start isEmpty. Operand 44807 states and 70619 transitions. [2023-12-21 13:03:01,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-21 13:03:01,115 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:03:01,116 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:03:01,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-21 13:03:01,116 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:03:01,116 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:03:01,116 INFO L85 PathProgramCache]: Analyzing trace with hash -1436043216, now seen corresponding path program 1 times [2023-12-21 13:03:01,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:03:01,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642336791] [2023-12-21 13:03:01,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:03:01,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:03:01,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:03:01,226 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-21 13:03:01,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:03:01,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642336791] [2023-12-21 13:03:01,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642336791] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:03:01,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:03:01,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 13:03:01,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094894003] [2023-12-21 13:03:01,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:03:01,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 13:03:01,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:03:01,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 13:03:01,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:03:01,228 INFO L87 Difference]: Start difference. First operand 44807 states and 70619 transitions. Second operand has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:03:01,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:03:01,489 INFO L93 Difference]: Finished difference Result 63523 states and 100707 transitions. [2023-12-21 13:03:01,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 13:03:01,489 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 0 states have call successors, (0), 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 92 [2023-12-21 13:03:01,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:03:01,579 INFO L225 Difference]: With dead ends: 63523 [2023-12-21 13:03:01,580 INFO L226 Difference]: Without dead ends: 53101 [2023-12-21 13:03:01,608 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-21 13:03:01,608 INFO L413 NwaCegarLoop]: 330 mSDtfsCounter, 509 mSDsluCounter, 695 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 509 SdHoareTripleChecker+Valid, 1025 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 13:03:01,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [509 Valid, 1025 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 13:03:01,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53101 states. [2023-12-21 13:03:02,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53101 to 51447. [2023-12-21 13:03:02,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51447 states, 51446 states have (on average 1.579112078684446) internal successors, (81239), 51446 states have internal predecessors, (81239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:03:02,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51447 states to 51447 states and 81239 transitions. [2023-12-21 13:03:02,290 INFO L78 Accepts]: Start accepts. Automaton has 51447 states and 81239 transitions. Word has length 92 [2023-12-21 13:03:02,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:03:02,290 INFO L495 AbstractCegarLoop]: Abstraction has 51447 states and 81239 transitions. [2023-12-21 13:03:02,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:03:02,291 INFO L276 IsEmpty]: Start isEmpty. Operand 51447 states and 81239 transitions. [2023-12-21 13:03:02,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-21 13:03:02,293 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:03:02,293 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:03:02,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-21 13:03:02,293 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:03:02,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:03:02,293 INFO L85 PathProgramCache]: Analyzing trace with hash -1630170924, now seen corresponding path program 1 times [2023-12-21 13:03:02,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:03:02,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364395502] [2023-12-21 13:03:02,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:03:02,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:03:02,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:03:02,774 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-21 13:03:02,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:03:02,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364395502] [2023-12-21 13:03:02,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364395502] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:03:02,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:03:02,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 13:03:02,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520448030] [2023-12-21 13:03:02,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:03:02,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 13:03:02,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:03:02,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 13:03:02,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-21 13:03:02,776 INFO L87 Difference]: Start difference. First operand 51447 states and 81239 transitions. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:03:03,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:03:03,266 INFO L93 Difference]: Finished difference Result 83820 states and 133088 transitions. [2023-12-21 13:03:03,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 13:03:03,266 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 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 93 [2023-12-21 13:03:03,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:03:03,365 INFO L225 Difference]: With dead ends: 83820 [2023-12-21 13:03:03,365 INFO L226 Difference]: Without dead ends: 66758 [2023-12-21 13:03:03,381 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-21 13:03:03,382 INFO L413 NwaCegarLoop]: 335 mSDtfsCounter, 230 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 663 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 13:03:03,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [230 Valid, 663 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 13:03:03,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66758 states. [2023-12-21 13:03:04,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66758 to 65106. [2023-12-21 13:03:04,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65106 states, 65105 states have (on average 1.5796175408954765) internal successors, (102841), 65105 states have internal predecessors, (102841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:03:04,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65106 states to 65106 states and 102841 transitions. [2023-12-21 13:03:04,216 INFO L78 Accepts]: Start accepts. Automaton has 65106 states and 102841 transitions. Word has length 93 [2023-12-21 13:03:04,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:03:04,217 INFO L495 AbstractCegarLoop]: Abstraction has 65106 states and 102841 transitions. [2023-12-21 13:03:04,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:03:04,217 INFO L276 IsEmpty]: Start isEmpty. Operand 65106 states and 102841 transitions. [2023-12-21 13:03:04,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-21 13:03:04,219 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:03:04,219 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:03:04,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-21 13:03:04,219 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:03:04,220 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:03:04,220 INFO L85 PathProgramCache]: Analyzing trace with hash 1430700236, now seen corresponding path program 1 times [2023-12-21 13:03:04,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:03:04,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5287481] [2023-12-21 13:03:04,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:03:04,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:03:04,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:03:04,479 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-21 13:03:04,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:03:04,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5287481] [2023-12-21 13:03:04,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5287481] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:03:04,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:03:04,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:03:04,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771880432] [2023-12-21 13:03:04,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:03:04,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:03:04,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:03:04,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:03:04,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:03:04,481 INFO L87 Difference]: Start difference. First operand 65106 states and 102841 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:03:04,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:03:04,863 INFO L93 Difference]: Finished difference Result 140451 states and 222733 transitions. [2023-12-21 13:03:04,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:03:04,864 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 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 93 [2023-12-21 13:03:04,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:03:05,386 INFO L225 Difference]: With dead ends: 140451 [2023-12-21 13:03:05,386 INFO L226 Difference]: Without dead ends: 109891 [2023-12-21 13:03:05,436 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 13:03:05,437 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 103 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:03:05,437 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 384 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:03:05,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109891 states. [2023-12-21 13:03:06,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109891 to 109613. [2023-12-21 13:03:06,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109613 states, 109612 states have (on average 1.5803014268510747) internal successors, (173220), 109612 states have internal predecessors, (173220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:03:06,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109613 states to 109613 states and 173220 transitions. [2023-12-21 13:03:06,877 INFO L78 Accepts]: Start accepts. Automaton has 109613 states and 173220 transitions. Word has length 93 [2023-12-21 13:03:06,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:03:06,877 INFO L495 AbstractCegarLoop]: Abstraction has 109613 states and 173220 transitions. [2023-12-21 13:03:06,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:03:06,877 INFO L276 IsEmpty]: Start isEmpty. Operand 109613 states and 173220 transitions. [2023-12-21 13:03:06,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-21 13:03:06,879 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:03:06,879 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:03:06,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-21 13:03:06,880 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:03:06,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:03:06,880 INFO L85 PathProgramCache]: Analyzing trace with hash -2025115264, now seen corresponding path program 1 times [2023-12-21 13:03:06,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:03:06,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539053130] [2023-12-21 13:03:06,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:03:06,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:03:06,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:03:06,966 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-21 13:03:06,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:03:06,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539053130] [2023-12-21 13:03:06,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539053130] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:03:06,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:03:06,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 13:03:06,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547212643] [2023-12-21 13:03:06,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:03:06,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 13:03:06,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:03:06,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 13:03:06,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-21 13:03:06,969 INFO L87 Difference]: Start difference. First operand 109613 states and 173220 transitions. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:03:07,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:03:07,718 INFO L93 Difference]: Finished difference Result 167652 states and 265951 transitions. [2023-12-21 13:03:07,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 13:03:07,719 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 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 94 [2023-12-21 13:03:07,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:03:07,921 INFO L225 Difference]: With dead ends: 167652 [2023-12-21 13:03:07,922 INFO L226 Difference]: Without dead ends: 136008 [2023-12-21 13:03:07,973 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-21 13:03:07,974 INFO L413 NwaCegarLoop]: 329 mSDtfsCounter, 238 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 657 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:03:07,974 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [238 Valid, 657 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:03:08,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136008 states. [2023-12-21 13:03:09,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136008 to 129428. [2023-12-21 13:03:09,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129428 states, 129427 states have (on average 1.5792068115617297) internal successors, (204392), 129427 states have internal predecessors, (204392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:03:09,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129428 states to 129428 states and 204392 transitions. [2023-12-21 13:03:09,955 INFO L78 Accepts]: Start accepts. Automaton has 129428 states and 204392 transitions. Word has length 94 [2023-12-21 13:03:09,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:03:09,955 INFO L495 AbstractCegarLoop]: Abstraction has 129428 states and 204392 transitions. [2023-12-21 13:03:09,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:03:09,955 INFO L276 IsEmpty]: Start isEmpty. Operand 129428 states and 204392 transitions. [2023-12-21 13:03:09,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-21 13:03:09,958 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:03:09,958 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:03:09,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-21 13:03:09,959 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:03:09,959 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:03:09,959 INFO L85 PathProgramCache]: Analyzing trace with hash 1718673077, now seen corresponding path program 1 times [2023-12-21 13:03:09,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:03:09,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813793905] [2023-12-21 13:03:09,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:03:09,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:03:09,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:03:10,023 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-21 13:03:10,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:03:10,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813793905] [2023-12-21 13:03:10,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813793905] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:03:10,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:03:10,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:03:10,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841051546] [2023-12-21 13:03:10,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:03:10,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:03:10,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:03:10,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:03:10,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:03:10,025 INFO L87 Difference]: Start difference. First operand 129428 states and 204392 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:03:11,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:03:11,299 INFO L93 Difference]: Finished difference Result 273651 states and 433258 transitions. [2023-12-21 13:03:11,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:03:11,300 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 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 94 [2023-12-21 13:03:11,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:03:11,718 INFO L225 Difference]: With dead ends: 273651 [2023-12-21 13:03:11,718 INFO L226 Difference]: Without dead ends: 212559 [2023-12-21 13:03:11,789 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 13:03:11,790 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 103 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 383 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:03:11,791 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 383 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:03:11,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212559 states. [2023-12-21 13:03:13,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212559 to 212029. [2023-12-21 13:03:14,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212029 states, 212028 states have (on average 1.5781453392948102) internal successors, (334611), 212028 states have internal predecessors, (334611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:03:14,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212029 states to 212029 states and 334611 transitions. [2023-12-21 13:03:14,953 INFO L78 Accepts]: Start accepts. Automaton has 212029 states and 334611 transitions. Word has length 94 [2023-12-21 13:03:14,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:03:14,953 INFO L495 AbstractCegarLoop]: Abstraction has 212029 states and 334611 transitions. [2023-12-21 13:03:14,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:03:14,953 INFO L276 IsEmpty]: Start isEmpty. Operand 212029 states and 334611 transitions. [2023-12-21 13:03:14,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-21 13:03:14,956 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:03:14,956 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:03:14,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-21 13:03:14,956 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:03:14,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:03:14,957 INFO L85 PathProgramCache]: Analyzing trace with hash -754923130, now seen corresponding path program 1 times [2023-12-21 13:03:14,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:03:14,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221516693] [2023-12-21 13:03:14,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:03:14,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:03:14,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:03:15,004 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:03:15,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:03:15,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221516693] [2023-12-21 13:03:15,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221516693] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:03:15,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:03:15,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:03:15,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133414615] [2023-12-21 13:03:15,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:03:15,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:03:15,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:03:15,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:03:15,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:03:15,008 INFO L87 Difference]: Start difference. First operand 212029 states and 334611 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:03:17,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:03:17,082 INFO L93 Difference]: Finished difference Result 625230 states and 986600 transitions. [2023-12-21 13:03:17,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:03:17,083 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 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 94 [2023-12-21 13:03:17,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:03:18,348 INFO L225 Difference]: With dead ends: 625230 [2023-12-21 13:03:18,349 INFO L226 Difference]: Without dead ends: 413270 [2023-12-21 13:03:18,469 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 13:03:18,470 INFO L413 NwaCegarLoop]: 266 mSDtfsCounter, 142 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 470 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:03:18,470 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 470 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:03:18,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413270 states. [2023-12-21 13:03:23,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413270 to 413268. [2023-12-21 13:03:23,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413268 states, 413267 states have (on average 1.567901622921743) internal successors, (647962), 413267 states have internal predecessors, (647962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:03:24,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413268 states to 413268 states and 647962 transitions. [2023-12-21 13:03:24,966 INFO L78 Accepts]: Start accepts. Automaton has 413268 states and 647962 transitions. Word has length 94 [2023-12-21 13:03:24,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:03:24,967 INFO L495 AbstractCegarLoop]: Abstraction has 413268 states and 647962 transitions. [2023-12-21 13:03:24,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:03:24,967 INFO L276 IsEmpty]: Start isEmpty. Operand 413268 states and 647962 transitions. [2023-12-21 13:03:24,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-21 13:03:24,971 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:03:24,971 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:03:24,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-21 13:03:24,971 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:03:24,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:03:24,972 INFO L85 PathProgramCache]: Analyzing trace with hash 1296747900, now seen corresponding path program 1 times [2023-12-21 13:03:24,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:03:24,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532501772] [2023-12-21 13:03:24,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:03:24,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:03:24,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:03:25,020 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:03:25,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:03:25,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532501772] [2023-12-21 13:03:25,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532501772] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:03:25,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:03:25,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:03:25,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524380768] [2023-12-21 13:03:25,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:03:25,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:03:25,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:03:25,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:03:25,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:03:25,021 INFO L87 Difference]: Start difference. First operand 413268 states and 647962 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:03:30,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:03:30,564 INFO L93 Difference]: Finished difference Result 1216712 states and 1907367 transitions. [2023-12-21 13:03:30,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:03:30,565 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 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 94 [2023-12-21 13:03:30,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:03:32,733 INFO L225 Difference]: With dead ends: 1216712 [2023-12-21 13:03:32,733 INFO L226 Difference]: Without dead ends: 803580 [2023-12-21 13:03:32,973 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 13:03:32,974 INFO L413 NwaCegarLoop]: 300 mSDtfsCounter, 160 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 504 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:03:32,974 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 504 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:03:33,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 803580 states. [2023-12-21 13:03:42,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 803580 to 803578. [2023-12-21 13:03:43,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 803578 states, 803577 states have (on average 1.5567767619033397) internal successors, (1250990), 803577 states have internal predecessors, (1250990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:03:46,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803578 states to 803578 states and 1250990 transitions. [2023-12-21 13:03:46,073 INFO L78 Accepts]: Start accepts. Automaton has 803578 states and 1250990 transitions. Word has length 94 [2023-12-21 13:03:46,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:03:46,074 INFO L495 AbstractCegarLoop]: Abstraction has 803578 states and 1250990 transitions. [2023-12-21 13:03:46,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:03:46,074 INFO L276 IsEmpty]: Start isEmpty. Operand 803578 states and 1250990 transitions. [2023-12-21 13:03:46,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-21 13:03:46,080 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:03:46,080 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:03:46,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-21 13:03:46,080 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:03:46,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:03:46,081 INFO L85 PathProgramCache]: Analyzing trace with hash 512047491, now seen corresponding path program 1 times [2023-12-21 13:03:46,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:03:46,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194622062] [2023-12-21 13:03:46,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:03:46,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:03:46,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:03:46,206 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:03:46,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:03:46,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194622062] [2023-12-21 13:03:46,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194622062] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:03:46,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:03:46,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:03:46,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277025568] [2023-12-21 13:03:46,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:03:46,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:03:46,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:03:46,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:03:46,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:03:46,208 INFO L87 Difference]: Start difference. First operand 803578 states and 1250990 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:03:53,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:03:53,408 INFO L93 Difference]: Finished difference Result 1549026 states and 2415398 transitions. [2023-12-21 13:03:53,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:03:53,409 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 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 95 [2023-12-21 13:03:53,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:03:56,623 INFO L225 Difference]: With dead ends: 1549026 [2023-12-21 13:03:56,624 INFO L226 Difference]: Without dead ends: 745708 [2023-12-21 13:03:57,205 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 13:03:57,206 INFO L413 NwaCegarLoop]: 259 mSDtfsCounter, 96 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 449 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:03:57,206 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 449 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:03:57,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 745708 states. [2023-12-21 13:04:06,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 745708 to 745706. [2023-12-21 13:04:07,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 745706 states, 745705 states have (on average 1.5517154907101334) internal successors, (1157122), 745705 states have internal predecessors, (1157122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:04:10,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 745706 states to 745706 states and 1157122 transitions. [2023-12-21 13:04:10,289 INFO L78 Accepts]: Start accepts. Automaton has 745706 states and 1157122 transitions. Word has length 95 [2023-12-21 13:04:10,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:04:10,289 INFO L495 AbstractCegarLoop]: Abstraction has 745706 states and 1157122 transitions. [2023-12-21 13:04:10,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:04:10,289 INFO L276 IsEmpty]: Start isEmpty. Operand 745706 states and 1157122 transitions. [2023-12-21 13:04:10,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-12-21 13:04:10,308 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:04:10,308 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:04:10,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-21 13:04:10,309 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:04:10,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:04:10,309 INFO L85 PathProgramCache]: Analyzing trace with hash 468528571, now seen corresponding path program 1 times [2023-12-21 13:04:10,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:04:10,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361881679] [2023-12-21 13:04:10,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:04:10,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:04:10,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:04:10,447 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:04:10,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:04:10,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361881679] [2023-12-21 13:04:10,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361881679] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:04:10,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:04:10,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:04:10,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904691431] [2023-12-21 13:04:10,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:04:10,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:04:10,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:04:10,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:04:10,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:04:10,451 INFO L87 Difference]: Start difference. First operand 745706 states and 1157122 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:04:16,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:04:16,087 INFO L93 Difference]: Finished difference Result 1055367 states and 1640301 transitions. [2023-12-21 13:04:16,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:04:16,087 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 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 95 [2023-12-21 13:04:16,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:04:17,185 INFO L225 Difference]: With dead ends: 1055367 [2023-12-21 13:04:17,185 INFO L226 Difference]: Without dead ends: 310021 [2023-12-21 13:04:18,093 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 13:04:18,108 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 70 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 418 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:04:18,109 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 418 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:04:18,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310021 states. [2023-12-21 13:04:22,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310021 to 310019. [2023-12-21 13:04:22,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310019 states, 310018 states have (on average 1.549532607784064) internal successors, (480383), 310018 states have internal predecessors, (480383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)