/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 13:33:55,762 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 13:33:55,827 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 13:33:55,831 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 13:33:55,831 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 13:33:55,859 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 13:33:55,859 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 13:33:55,859 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 13:33:55,862 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 13:33:55,865 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 13:33:55,865 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 13:33:55,866 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 13:33:55,866 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 13:33:55,867 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 13:33:55,867 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 13:33:55,868 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 13:33:55,868 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 13:33:55,868 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 13:33:55,868 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-21 13:33:55,868 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 13:33:55,868 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 13:33:55,869 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 13:33:55,869 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 13:33:55,869 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 13:33:55,869 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 13:33:55,869 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 13:33:55,870 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 13:33:55,870 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 13:33:55,870 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 13:33:55,870 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 13:33:55,871 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 13:33:55,871 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 13:33:55,871 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 13:33:55,872 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 13:33:55,872 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 13:33:55,872 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 13:33:55,872 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-21 13:33:55,872 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-21 13:33:55,872 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 13:33:55,872 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 13:33:55,872 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 13:33:55,873 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 13:33:55,873 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 13:33:55,873 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-21 13:33:56,097 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 13:33:56,122 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 13:33:56,124 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 13:33:56,125 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 13:33:56,125 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 13:33:56,126 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2023-12-21 13:33:57,235 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 13:33:57,405 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 13:33:57,405 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2023-12-21 13:33:57,414 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d489f1fe/0fd841905d1e462382717de4e2502a75/FLAG23e714c39 [2023-12-21 13:33:57,808 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d489f1fe/0fd841905d1e462382717de4e2502a75 [2023-12-21 13:33:57,810 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 13:33:57,811 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 13:33:57,812 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 13:33:57,812 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 13:33:57,820 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 13:33:57,821 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 01:33:57" (1/1) ... [2023-12-21 13:33:57,821 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3be9371e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:33:57, skipping insertion in model container [2023-12-21 13:33:57,822 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 01:33:57" (1/1) ... [2023-12-21 13:33:57,876 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 13:33:58,018 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c[6322,6335] [2023-12-21 13:33:58,050 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 13:33:58,075 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 13:33:58,118 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c[6322,6335] [2023-12-21 13:33:58,145 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 13:33:58,158 INFO L206 MainTranslator]: Completed translation [2023-12-21 13:33:58,159 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:33:58 WrapperNode [2023-12-21 13:33:58,159 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 13:33:58,160 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 13:33:58,160 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 13:33:58,160 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 13:33:58,167 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:33:58" (1/1) ... [2023-12-21 13:33:58,176 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:33:58" (1/1) ... [2023-12-21 13:33:58,206 INFO L138 Inliner]: procedures = 24, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 554 [2023-12-21 13:33:58,208 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 13:33:58,208 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 13:33:58,208 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 13:33:58,208 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 13:33:58,225 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:33:58" (1/1) ... [2023-12-21 13:33:58,225 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:33:58" (1/1) ... [2023-12-21 13:33:58,227 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:33:58" (1/1) ... [2023-12-21 13:33:58,238 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 13:33:58,238 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:33:58" (1/1) ... [2023-12-21 13:33:58,238 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:33:58" (1/1) ... [2023-12-21 13:33:58,244 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:33:58" (1/1) ... [2023-12-21 13:33:58,247 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:33:58" (1/1) ... [2023-12-21 13:33:58,249 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:33:58" (1/1) ... [2023-12-21 13:33:58,251 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:33:58" (1/1) ... [2023-12-21 13:33:58,253 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 13:33:58,262 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 13:33:58,276 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 13:33:58,276 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 13:33:58,277 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:33:58" (1/1) ... [2023-12-21 13:33:58,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 13:33:58,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:33:58,321 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 13:33:58,380 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 13:33:58,394 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 13:33:58,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-21 13:33:58,395 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 13:33:58,395 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 13:33:58,501 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 13:33:58,503 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 13:33:58,865 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 13:33:58,905 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 13:33:58,905 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-21 13:33:58,905 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 01:33:58 BoogieIcfgContainer [2023-12-21 13:33:58,905 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 13:33:58,930 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 13:33:58,931 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 13:33:58,933 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 13:33:58,933 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 01:33:57" (1/3) ... [2023-12-21 13:33:58,934 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cd15674 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 01:33:58, skipping insertion in model container [2023-12-21 13:33:58,934 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:33:58" (2/3) ... [2023-12-21 13:33:58,934 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cd15674 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 01:33:58, skipping insertion in model container [2023-12-21 13:33:58,934 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 01:33:58" (3/3) ... [2023-12-21 13:33:58,935 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2023-12-21 13:33:58,947 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 13:33:58,947 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-21 13:33:58,980 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 13:33:58,985 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;@4cead47e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 13:33:58,985 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-21 13:33:58,989 INFO L276 IsEmpty]: Start isEmpty. Operand has 129 states, 127 states have (on average 1.7165354330708662) internal successors, (218), 128 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:33:58,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-21 13:33:58,996 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:33:58,997 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 13:33:58,998 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:33:59,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:33:59,001 INFO L85 PathProgramCache]: Analyzing trace with hash 1636820329, now seen corresponding path program 1 times [2023-12-21 13:33:59,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:33:59,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500882900] [2023-12-21 13:33:59,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:33:59,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:33:59,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:33:59,354 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 13:33:59,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:33:59,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500882900] [2023-12-21 13:33:59,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500882900] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:33:59,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:33:59,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:33:59,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617737357] [2023-12-21 13:33:59,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:33:59,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:33:59,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:33:59,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:33:59,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:33:59,391 INFO L87 Difference]: Start difference. First operand has 129 states, 127 states have (on average 1.7165354330708662) internal successors, (218), 128 states have internal predecessors, (218), 0 states have call successors, (0), 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 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 13:33:59,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:33:59,464 INFO L93 Difference]: Finished difference Result 303 states and 494 transitions. [2023-12-21 13:33:59,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:33:59,467 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 13:33:59,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:33:59,474 INFO L225 Difference]: With dead ends: 303 [2023-12-21 13:33:59,475 INFO L226 Difference]: Without dead ends: 204 [2023-12-21 13:33:59,477 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 13:33:59,479 INFO L413 NwaCegarLoop]: 312 mSDtfsCounter, 157 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 459 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:33:59,480 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 459 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:33:59,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2023-12-21 13:33:59,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 202. [2023-12-21 13:33:59,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 201 states have (on average 1.5024875621890548) internal successors, (302), 201 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:33:59,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 302 transitions. [2023-12-21 13:33:59,513 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 302 transitions. Word has length 59 [2023-12-21 13:33:59,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:33:59,513 INFO L495 AbstractCegarLoop]: Abstraction has 202 states and 302 transitions. [2023-12-21 13:33:59,513 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 13:33:59,513 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 302 transitions. [2023-12-21 13:33:59,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-21 13:33:59,515 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:33:59,515 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] [2023-12-21 13:33:59,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-21 13:33:59,515 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:33:59,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:33:59,516 INFO L85 PathProgramCache]: Analyzing trace with hash 193831411, now seen corresponding path program 1 times [2023-12-21 13:33:59,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:33:59,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639605989] [2023-12-21 13:33:59,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:33:59,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:33:59,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:33:59,652 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 13:33:59,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:33:59,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639605989] [2023-12-21 13:33:59,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639605989] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:33:59,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:33:59,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:33:59,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319957146] [2023-12-21 13:33:59,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:33:59,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:33:59,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:33:59,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:33:59,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:33:59,655 INFO L87 Difference]: Start difference. First operand 202 states and 302 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:33:59,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:33:59,679 INFO L93 Difference]: Finished difference Result 506 states and 786 transitions. [2023-12-21 13:33:59,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:33:59,682 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 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 60 [2023-12-21 13:33:59,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:33:59,684 INFO L225 Difference]: With dead ends: 506 [2023-12-21 13:33:59,684 INFO L226 Difference]: Without dead ends: 338 [2023-12-21 13:33:59,685 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 13:33:59,686 INFO L413 NwaCegarLoop]: 259 mSDtfsCounter, 127 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 400 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 13:33:59,686 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 400 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:33:59,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2023-12-21 13:33:59,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 336. [2023-12-21 13:33:59,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336 states, 335 states have (on average 1.537313432835821) internal successors, (515), 335 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:33:59,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 515 transitions. [2023-12-21 13:33:59,702 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 515 transitions. Word has length 60 [2023-12-21 13:33:59,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:33:59,702 INFO L495 AbstractCegarLoop]: Abstraction has 336 states and 515 transitions. [2023-12-21 13:33:59,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:33:59,703 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 515 transitions. [2023-12-21 13:33:59,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-21 13:33:59,704 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:33:59,704 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 13:33:59,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-21 13:33:59,704 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:33:59,705 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:33:59,705 INFO L85 PathProgramCache]: Analyzing trace with hash -925933732, now seen corresponding path program 1 times [2023-12-21 13:33:59,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:33:59,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758278974] [2023-12-21 13:33:59,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:33:59,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:33:59,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:33:59,776 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 13:33:59,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:33:59,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758278974] [2023-12-21 13:33:59,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758278974] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:33:59,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:33:59,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:33:59,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506853696] [2023-12-21 13:33:59,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:33:59,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:33:59,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:33:59,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:33:59,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:33:59,783 INFO L87 Difference]: Start difference. First operand 336 states and 515 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 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 13:33:59,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:33:59,806 INFO L93 Difference]: Finished difference Result 876 states and 1373 transitions. [2023-12-21 13:33:59,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:33:59,807 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 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 13:33:59,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:33:59,810 INFO L225 Difference]: With dead ends: 876 [2023-12-21 13:33:59,810 INFO L226 Difference]: Without dead ends: 574 [2023-12-21 13:33:59,813 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:33:59,816 INFO L413 NwaCegarLoop]: 240 mSDtfsCounter, 122 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 385 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 13:33:59,817 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 385 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:33:59,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2023-12-21 13:33:59,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 572. [2023-12-21 13:33:59,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 572 states, 571 states have (on average 1.553415061295972) internal successors, (887), 571 states have internal predecessors, (887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:33:59,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 887 transitions. [2023-12-21 13:33:59,842 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 887 transitions. Word has length 61 [2023-12-21 13:33:59,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:33:59,842 INFO L495 AbstractCegarLoop]: Abstraction has 572 states and 887 transitions. [2023-12-21 13:33:59,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 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 13:33:59,843 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 887 transitions. [2023-12-21 13:33:59,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-21 13:33:59,844 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:33:59,844 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 13:33:59,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-21 13:33:59,844 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:33:59,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:33:59,845 INFO L85 PathProgramCache]: Analyzing trace with hash -320763344, now seen corresponding path program 1 times [2023-12-21 13:33:59,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:33:59,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071397414] [2023-12-21 13:33:59,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:33:59,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:33:59,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:33:59,925 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 13:33:59,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:33:59,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071397414] [2023-12-21 13:33:59,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071397414] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:33:59,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:33:59,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:33:59,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157411708] [2023-12-21 13:33:59,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:33:59,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:33:59,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:33:59,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:33:59,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:33:59,928 INFO L87 Difference]: Start difference. First operand 572 states and 887 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 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 13:33:59,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:33:59,944 INFO L93 Difference]: Finished difference Result 1520 states and 2385 transitions. [2023-12-21 13:33:59,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:33:59,945 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 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 13:33:59,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:33:59,948 INFO L225 Difference]: With dead ends: 1520 [2023-12-21 13:33:59,948 INFO L226 Difference]: Without dead ends: 982 [2023-12-21 13:33:59,950 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 13:33:59,957 INFO L413 NwaCegarLoop]: 221 mSDtfsCounter, 117 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 370 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 13:33:59,957 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 370 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:33:59,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 982 states. [2023-12-21 13:33:59,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 982 to 980. [2023-12-21 13:33:59,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 980 states, 979 states have (on average 1.5556690500510726) internal successors, (1523), 979 states have internal predecessors, (1523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:33:59,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 980 states to 980 states and 1523 transitions. [2023-12-21 13:33:59,976 INFO L78 Accepts]: Start accepts. Automaton has 980 states and 1523 transitions. Word has length 62 [2023-12-21 13:33:59,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:33:59,977 INFO L495 AbstractCegarLoop]: Abstraction has 980 states and 1523 transitions. [2023-12-21 13:33:59,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 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 13:33:59,977 INFO L276 IsEmpty]: Start isEmpty. Operand 980 states and 1523 transitions. [2023-12-21 13:33:59,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-21 13:33:59,982 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:33:59,982 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 13:33:59,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-21 13:33:59,983 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:33:59,984 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:33:59,984 INFO L85 PathProgramCache]: Analyzing trace with hash -1594093213, now seen corresponding path program 1 times [2023-12-21 13:33:59,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:33:59,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024717281] [2023-12-21 13:33:59,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:33:59,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:34:00,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:34:00,190 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 13:34:00,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:34:00,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024717281] [2023-12-21 13:34:00,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024717281] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:34:00,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:34:00,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 13:34:00,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435498261] [2023-12-21 13:34:00,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:34:00,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 13:34:00,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:34:00,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 13:34:00,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-21 13:34:00,192 INFO L87 Difference]: Start difference. First operand 980 states and 1523 transitions. Second operand has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 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 13:34:00,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:34:00,351 INFO L93 Difference]: Finished difference Result 6656 states and 10457 transitions. [2023-12-21 13:34:00,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 13:34:00,352 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 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 13:34:00,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:34:00,368 INFO L225 Difference]: With dead ends: 6656 [2023-12-21 13:34:00,369 INFO L226 Difference]: Without dead ends: 5710 [2023-12-21 13:34:00,372 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2023-12-21 13:34:00,373 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 1940 mSDsluCounter, 1480 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1940 SdHoareTripleChecker+Valid, 1659 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:34:00,373 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1940 Valid, 1659 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:34:00,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5710 states. [2023-12-21 13:34:00,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5710 to 1924. [2023-12-21 13:34:00,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1924 states, 1923 states have (on average 1.5491419656786272) internal successors, (2979), 1923 states have internal predecessors, (2979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:34:00,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1924 states to 1924 states and 2979 transitions. [2023-12-21 13:34:00,439 INFO L78 Accepts]: Start accepts. Automaton has 1924 states and 2979 transitions. Word has length 63 [2023-12-21 13:34:00,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:34:00,440 INFO L495 AbstractCegarLoop]: Abstraction has 1924 states and 2979 transitions. [2023-12-21 13:34:00,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 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 13:34:00,441 INFO L276 IsEmpty]: Start isEmpty. Operand 1924 states and 2979 transitions. [2023-12-21 13:34:00,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-21 13:34:00,442 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:34:00,442 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 13:34:00,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-21 13:34:00,443 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:34:00,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:34:00,443 INFO L85 PathProgramCache]: Analyzing trace with hash 2103261709, now seen corresponding path program 1 times [2023-12-21 13:34:00,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:34:00,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541936516] [2023-12-21 13:34:00,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:34:00,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:34:00,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:34:00,631 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 13:34:00,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:34:00,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541936516] [2023-12-21 13:34:00,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541936516] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:34:00,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:34:00,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 13:34:00,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548064499] [2023-12-21 13:34:00,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:34:00,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 13:34:00,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:34:00,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 13:34:00,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-12-21 13:34:00,633 INFO L87 Difference]: Start difference. First operand 1924 states and 2979 transitions. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 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 13:34:00,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:34:00,767 INFO L93 Difference]: Finished difference Result 10094 states and 15592 transitions. [2023-12-21 13:34:00,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 13:34:00,768 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 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 13:34:00,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:34:00,789 INFO L225 Difference]: With dead ends: 10094 [2023-12-21 13:34:00,789 INFO L226 Difference]: Without dead ends: 8204 [2023-12-21 13:34:00,795 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-12-21 13:34:00,797 INFO L413 NwaCegarLoop]: 487 mSDtfsCounter, 687 mSDsluCounter, 624 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 687 SdHoareTripleChecker+Valid, 1111 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 13:34:00,798 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [687 Valid, 1111 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 13:34:00,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8204 states. [2023-12-21 13:34:00,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8204 to 8196. [2023-12-21 13:34:00,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8196 states, 8195 states have (on average 1.5388651616839537) internal successors, (12611), 8195 states have internal predecessors, (12611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:34:00,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8196 states to 8196 states and 12611 transitions. [2023-12-21 13:34:00,979 INFO L78 Accepts]: Start accepts. Automaton has 8196 states and 12611 transitions. Word has length 64 [2023-12-21 13:34:00,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:34:00,980 INFO L495 AbstractCegarLoop]: Abstraction has 8196 states and 12611 transitions. [2023-12-21 13:34:00,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 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 13:34:00,980 INFO L276 IsEmpty]: Start isEmpty. Operand 8196 states and 12611 transitions. [2023-12-21 13:34:00,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-21 13:34:00,981 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:34:00,981 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 13:34:00,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-21 13:34:00,982 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:34:00,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:34:00,982 INFO L85 PathProgramCache]: Analyzing trace with hash -822403850, now seen corresponding path program 1 times [2023-12-21 13:34:00,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:34:00,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723636373] [2023-12-21 13:34:00,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:34:00,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:34:01,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:34:01,040 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 13:34:01,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:34:01,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723636373] [2023-12-21 13:34:01,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723636373] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:34:01,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:34:01,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:34:01,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235577778] [2023-12-21 13:34:01,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:34:01,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:34:01,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:34:01,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:34:01,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:34:01,043 INFO L87 Difference]: Start difference. First operand 8196 states and 12611 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 13:34:01,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:34:01,118 INFO L93 Difference]: Finished difference Result 22760 states and 34885 transitions. [2023-12-21 13:34:01,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:34:01,118 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 13:34:01,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:34:01,171 INFO L225 Difference]: With dead ends: 22760 [2023-12-21 13:34:01,172 INFO L226 Difference]: Without dead ends: 14598 [2023-12-21 13:34:01,186 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 13:34:01,187 INFO L413 NwaCegarLoop]: 307 mSDtfsCounter, 136 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 448 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 13:34:01,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 448 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:34:01,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14598 states. [2023-12-21 13:34:01,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14598 to 14596. [2023-12-21 13:34:01,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14596 states, 14595 states have (on average 1.5174374785885578) internal successors, (22147), 14595 states have internal predecessors, (22147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:34:01,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14596 states to 14596 states and 22147 transitions. [2023-12-21 13:34:01,569 INFO L78 Accepts]: Start accepts. Automaton has 14596 states and 22147 transitions. Word has length 64 [2023-12-21 13:34:01,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:34:01,569 INFO L495 AbstractCegarLoop]: Abstraction has 14596 states and 22147 transitions. [2023-12-21 13:34:01,570 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 13:34:01,570 INFO L276 IsEmpty]: Start isEmpty. Operand 14596 states and 22147 transitions. [2023-12-21 13:34:01,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-21 13:34:01,571 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:34:01,571 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 13:34:01,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-21 13:34:01,572 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:34:01,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:34:01,572 INFO L85 PathProgramCache]: Analyzing trace with hash 889715588, now seen corresponding path program 1 times [2023-12-21 13:34:01,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:34:01,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172181137] [2023-12-21 13:34:01,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:34:01,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:34:01,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:34:01,764 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 13:34:01,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:34:01,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172181137] [2023-12-21 13:34:01,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172181137] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:34:01,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:34:01,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 13:34:01,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789483450] [2023-12-21 13:34:01,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:34:01,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 13:34:01,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:34:01,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 13:34:01,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:34:01,766 INFO L87 Difference]: Start difference. First operand 14596 states and 22147 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 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 13:34:02,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:34:02,034 INFO L93 Difference]: Finished difference Result 43720 states and 66373 transitions. [2023-12-21 13:34:02,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 13:34:02,035 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 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 13:34:02,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:34:02,085 INFO L225 Difference]: With dead ends: 43720 [2023-12-21 13:34:02,085 INFO L226 Difference]: Without dead ends: 29158 [2023-12-21 13:34:02,107 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-21 13:34:02,109 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 777 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 777 SdHoareTripleChecker+Valid, 210 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 13:34:02,109 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [777 Valid, 210 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 13:34:02,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29158 states. [2023-12-21 13:34:02,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29158 to 29156. [2023-12-21 13:34:02,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29156 states, 29155 states have (on average 1.509277996913051) internal successors, (44003), 29155 states have internal predecessors, (44003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:34:02,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29156 states to 29156 states and 44003 transitions. [2023-12-21 13:34:02,633 INFO L78 Accepts]: Start accepts. Automaton has 29156 states and 44003 transitions. Word has length 66 [2023-12-21 13:34:02,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:34:02,634 INFO L495 AbstractCegarLoop]: Abstraction has 29156 states and 44003 transitions. [2023-12-21 13:34:02,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 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 13:34:02,634 INFO L276 IsEmpty]: Start isEmpty. Operand 29156 states and 44003 transitions. [2023-12-21 13:34:02,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-21 13:34:02,634 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:34:02,635 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 13:34:02,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-21 13:34:02,635 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:34:02,635 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:34:02,635 INFO L85 PathProgramCache]: Analyzing trace with hash -1635280001, now seen corresponding path program 1 times [2023-12-21 13:34:02,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:34:02,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065750868] [2023-12-21 13:34:02,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:34:02,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:34:02,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:34:02,939 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 13:34:02,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:34:02,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065750868] [2023-12-21 13:34:02,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065750868] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:34:02,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:34:02,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 13:34:02,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292030018] [2023-12-21 13:34:02,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:34:02,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 13:34:02,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:34:02,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 13:34:02,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:34:02,940 INFO L87 Difference]: Start difference. First operand 29156 states and 44003 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 13:34:03,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:34:03,186 INFO L93 Difference]: Finished difference Result 59558 states and 89252 transitions. [2023-12-21 13:34:03,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 13:34:03,186 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 13:34:03,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:34:03,290 INFO L225 Difference]: With dead ends: 59558 [2023-12-21 13:34:03,291 INFO L226 Difference]: Without dead ends: 59556 [2023-12-21 13:34:03,305 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 13:34:03,307 INFO L413 NwaCegarLoop]: 268 mSDtfsCounter, 284 mSDsluCounter, 618 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 886 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:34:03,308 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [284 Valid, 886 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:34:03,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59556 states. [2023-12-21 13:34:03,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59556 to 30436. [2023-12-21 13:34:03,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30436 states, 30435 states have (on average 1.487859372433054) internal successors, (45283), 30435 states have internal predecessors, (45283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:34:04,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30436 states to 30436 states and 45283 transitions. [2023-12-21 13:34:04,035 INFO L78 Accepts]: Start accepts. Automaton has 30436 states and 45283 transitions. Word has length 66 [2023-12-21 13:34:04,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:34:04,035 INFO L495 AbstractCegarLoop]: Abstraction has 30436 states and 45283 transitions. [2023-12-21 13:34:04,035 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 13:34:04,035 INFO L276 IsEmpty]: Start isEmpty. Operand 30436 states and 45283 transitions. [2023-12-21 13:34:04,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-12-21 13:34:04,039 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:34:04,039 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] [2023-12-21 13:34:04,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-21 13:34:04,040 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:34:04,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:34:04,044 INFO L85 PathProgramCache]: Analyzing trace with hash 856500609, now seen corresponding path program 1 times [2023-12-21 13:34:04,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:34:04,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287396592] [2023-12-21 13:34:04,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:34:04,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:34:04,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:34:04,109 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 13:34:04,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:34:04,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287396592] [2023-12-21 13:34:04,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287396592] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:34:04,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:34:04,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:34:04,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670768443] [2023-12-21 13:34:04,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:34:04,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:34:04,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:34:04,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:34:04,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:34:04,110 INFO L87 Difference]: Start difference. First operand 30436 states and 45283 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:34:04,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:34:04,356 INFO L93 Difference]: Finished difference Result 74186 states and 110319 transitions. [2023-12-21 13:34:04,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:34:04,357 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 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 67 [2023-12-21 13:34:04,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:34:04,420 INFO L225 Difference]: With dead ends: 74186 [2023-12-21 13:34:04,420 INFO L226 Difference]: Without dead ends: 43784 [2023-12-21 13:34:04,449 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 13:34:04,449 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 107 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 326 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:34:04,450 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 326 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:34:04,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43784 states. [2023-12-21 13:34:05,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43784 to 43782. [2023-12-21 13:34:05,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43782 states, 43781 states have (on average 1.4796601265389095) internal successors, (64781), 43781 states have internal predecessors, (64781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:34:05,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43782 states to 43782 states and 64781 transitions. [2023-12-21 13:34:05,244 INFO L78 Accepts]: Start accepts. Automaton has 43782 states and 64781 transitions. Word has length 67 [2023-12-21 13:34:05,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:34:05,244 INFO L495 AbstractCegarLoop]: Abstraction has 43782 states and 64781 transitions. [2023-12-21 13:34:05,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:34:05,244 INFO L276 IsEmpty]: Start isEmpty. Operand 43782 states and 64781 transitions. [2023-12-21 13:34:05,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-21 13:34:05,256 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:34:05,256 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:34:05,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-21 13:34:05,257 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:34:05,258 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:34:05,258 INFO L85 PathProgramCache]: Analyzing trace with hash 1378989132, now seen corresponding path program 1 times [2023-12-21 13:34:05,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:34:05,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688575573] [2023-12-21 13:34:05,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:34:05,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:34:05,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:34:05,459 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 13:34:05,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:34:05,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688575573] [2023-12-21 13:34:05,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688575573] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:34:05,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [872759534] [2023-12-21 13:34:05,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:34:05,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:34:05,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:34:05,463 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 13:34:05,492 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-21 13:34:05,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:34:05,588 INFO L262 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-21 13:34:05,595 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:34:05,931 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 13:34:05,931 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:34:06,261 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 13:34:06,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [872759534] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:34:06,262 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:34:06,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 5] total 10 [2023-12-21 13:34:06,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275373724] [2023-12-21 13:34:06,262 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:34:06,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-21 13:34:06,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:34:06,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-21 13:34:06,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=50, Unknown=0, NotChecked=0, Total=90 [2023-12-21 13:34:06,264 INFO L87 Difference]: Start difference. First operand 43782 states and 64781 transitions. Second operand has 10 states, 10 states have (on average 24.2) internal successors, (242), 10 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:34:06,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:34:06,872 INFO L93 Difference]: Finished difference Result 137190 states and 204045 transitions. [2023-12-21 13:34:06,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 13:34:06,873 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 24.2) internal successors, (242), 10 states have internal predecessors, (242), 0 states have call successors, (0), 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 13:34:06,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:34:07,082 INFO L225 Difference]: With dead ends: 137190 [2023-12-21 13:34:07,082 INFO L226 Difference]: Without dead ends: 106788 [2023-12-21 13:34:07,131 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=50, Invalid=60, Unknown=0, NotChecked=0, Total=110 [2023-12-21 13:34:07,132 INFO L413 NwaCegarLoop]: 263 mSDtfsCounter, 699 mSDsluCounter, 1324 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 699 SdHoareTripleChecker+Valid, 1587 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:34:07,132 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [699 Valid, 1587 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:34:07,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106788 states. [2023-12-21 13:34:08,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106788 to 101254. [2023-12-21 13:34:08,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101254 states, 101253 states have (on average 1.4741390378556685) internal successors, (149261), 101253 states have internal predecessors, (149261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:34:08,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101254 states to 101254 states and 149261 transitions. [2023-12-21 13:34:08,799 INFO L78 Accepts]: Start accepts. Automaton has 101254 states and 149261 transitions. Word has length 92 [2023-12-21 13:34:08,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:34:08,799 INFO L495 AbstractCegarLoop]: Abstraction has 101254 states and 149261 transitions. [2023-12-21 13:34:08,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 24.2) internal successors, (242), 10 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:34:08,800 INFO L276 IsEmpty]: Start isEmpty. Operand 101254 states and 149261 transitions. [2023-12-21 13:34:08,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-21 13:34:08,812 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:34:08,812 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:34:08,818 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-21 13:34:09,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-21 13:34:09,018 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:34:09,019 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:34:09,020 INFO L85 PathProgramCache]: Analyzing trace with hash 1846539331, now seen corresponding path program 1 times [2023-12-21 13:34:09,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:34:09,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111400184] [2023-12-21 13:34:09,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:34:09,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:34:09,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:34:09,105 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 13:34:09,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:34:09,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111400184] [2023-12-21 13:34:09,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111400184] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:34:09,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:34:09,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:34:09,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883397331] [2023-12-21 13:34:09,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:34:09,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:34:09,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:34:09,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:34:09,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:34:09,106 INFO L87 Difference]: Start difference. First operand 101254 states and 149261 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 13:34:09,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:34:09,640 INFO L93 Difference]: Finished difference Result 136775 states and 201447 transitions. [2023-12-21 13:34:09,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:34:09,648 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 13:34:09,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:34:09,789 INFO L225 Difference]: With dead ends: 136775 [2023-12-21 13:34:09,790 INFO L226 Difference]: Without dead ends: 103149 [2023-12-21 13:34:09,837 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 13:34:09,839 INFO L413 NwaCegarLoop]: 248 mSDtfsCounter, 109 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 416 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:34:09,839 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 416 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:34:09,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103149 states. [2023-12-21 13:34:11,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103149 to 101406. [2023-12-21 13:34:11,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101406 states, 101405 states have (on average 1.4535969626744243) internal successors, (147402), 101405 states have internal predecessors, (147402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:34:11,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101406 states to 101406 states and 147402 transitions. [2023-12-21 13:34:11,582 INFO L78 Accepts]: Start accepts. Automaton has 101406 states and 147402 transitions. Word has length 93 [2023-12-21 13:34:11,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:34:11,582 INFO L495 AbstractCegarLoop]: Abstraction has 101406 states and 147402 transitions. [2023-12-21 13:34:11,582 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 13:34:11,582 INFO L276 IsEmpty]: Start isEmpty. Operand 101406 states and 147402 transitions. [2023-12-21 13:34:11,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-21 13:34:11,593 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:34:11,593 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:34:11,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-21 13:34:11,593 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:34:11,593 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:34:11,593 INFO L85 PathProgramCache]: Analyzing trace with hash -571745188, now seen corresponding path program 1 times [2023-12-21 13:34:11,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:34:11,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773765524] [2023-12-21 13:34:11,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:34:11,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:34:11,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:34:11,631 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 13:34:11,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:34:11,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773765524] [2023-12-21 13:34:11,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773765524] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:34:11,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:34:11,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:34:11,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739779418] [2023-12-21 13:34:11,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:34:11,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:34:11,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:34:11,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:34:11,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:34:11,632 INFO L87 Difference]: Start difference. First operand 101406 states and 147402 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 13:34:12,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:34:12,260 INFO L93 Difference]: Finished difference Result 178397 states and 259745 transitions. [2023-12-21 13:34:12,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:34:12,261 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 13:34:12,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:34:12,466 INFO L225 Difference]: With dead ends: 178397 [2023-12-21 13:34:12,466 INFO L226 Difference]: Without dead ends: 128940 [2023-12-21 13:34:12,517 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 13:34:12,518 INFO L413 NwaCegarLoop]: 229 mSDtfsCounter, 108 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 397 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:34:12,518 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 397 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:34:12,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128940 states. [2023-12-21 13:34:14,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128940 to 125028. [2023-12-21 13:34:14,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125028 states, 125027 states have (on average 1.4370815903764786) internal successors, (179674), 125027 states have internal predecessors, (179674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:34:14,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125028 states to 125028 states and 179674 transitions. [2023-12-21 13:34:14,423 INFO L78 Accepts]: Start accepts. Automaton has 125028 states and 179674 transitions. Word has length 93 [2023-12-21 13:34:14,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:34:14,423 INFO L495 AbstractCegarLoop]: Abstraction has 125028 states and 179674 transitions. [2023-12-21 13:34:14,424 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 13:34:14,424 INFO L276 IsEmpty]: Start isEmpty. Operand 125028 states and 179674 transitions. [2023-12-21 13:34:14,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-21 13:34:14,436 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:34:14,436 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:34:14,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-21 13:34:14,437 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:34:14,437 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:34:14,437 INFO L85 PathProgramCache]: Analyzing trace with hash -1523254369, now seen corresponding path program 1 times [2023-12-21 13:34:14,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:34:14,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761452374] [2023-12-21 13:34:14,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:34:14,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:34:14,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:34:14,476 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 13:34:14,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:34:14,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761452374] [2023-12-21 13:34:14,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761452374] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:34:14,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:34:14,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:34:14,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793107904] [2023-12-21 13:34:14,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:34:14,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:34:14,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:34:14,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:34:14,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:34:14,478 INFO L87 Difference]: Start difference. First operand 125028 states and 179674 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 13:34:15,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:34:15,472 INFO L93 Difference]: Finished difference Result 280592 states and 403664 transitions. [2023-12-21 13:34:15,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:34:15,473 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 13:34:15,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:34:15,727 INFO L225 Difference]: With dead ends: 280592 [2023-12-21 13:34:15,727 INFO L226 Difference]: Without dead ends: 190297 [2023-12-21 13:34:15,803 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 13:34:15,803 INFO L413 NwaCegarLoop]: 210 mSDtfsCounter, 107 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 378 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:34:15,803 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 378 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:34:15,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190297 states. [2023-12-21 13:34:18,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190297 to 187107. [2023-12-21 13:34:18,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187107 states, 187106 states have (on average 1.422348829006018) internal successors, (266130), 187106 states have internal predecessors, (266130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:34:19,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187107 states to 187107 states and 266130 transitions. [2023-12-21 13:34:19,051 INFO L78 Accepts]: Start accepts. Automaton has 187107 states and 266130 transitions. Word has length 93 [2023-12-21 13:34:19,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:34:19,052 INFO L495 AbstractCegarLoop]: Abstraction has 187107 states and 266130 transitions. [2023-12-21 13:34:19,052 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 13:34:19,052 INFO L276 IsEmpty]: Start isEmpty. Operand 187107 states and 266130 transitions. [2023-12-21 13:34:19,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-21 13:34:19,068 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:34:19,096 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:34:19,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-21 13:34:19,096 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:34:19,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:34:19,097 INFO L85 PathProgramCache]: Analyzing trace with hash 666224652, now seen corresponding path program 1 times [2023-12-21 13:34:19,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:34:19,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819158211] [2023-12-21 13:34:19,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:34:19,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:34:19,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:34:19,203 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-21 13:34:19,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:34:19,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819158211] [2023-12-21 13:34:19,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819158211] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:34:19,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:34:19,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 13:34:19,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350169300] [2023-12-21 13:34:19,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:34:19,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 13:34:19,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:34:19,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 13:34:19,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-21 13:34:19,206 INFO L87 Difference]: Start difference. First operand 187107 states and 266130 transitions. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:34:21,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:34:21,340 INFO L93 Difference]: Finished difference Result 525607 states and 754340 transitions. [2023-12-21 13:34:21,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 13:34:21,342 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 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 13:34:21,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:34:22,145 INFO L225 Difference]: With dead ends: 525607 [2023-12-21 13:34:22,145 INFO L226 Difference]: Without dead ends: 437871 [2023-12-21 13:34:22,356 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-21 13:34:22,361 INFO L413 NwaCegarLoop]: 334 mSDtfsCounter, 1179 mSDsluCounter, 1510 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1179 SdHoareTripleChecker+Valid, 1844 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 13:34:22,362 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1179 Valid, 1844 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 13:34:22,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437871 states. [2023-12-21 13:34:26,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437871 to 267290. [2023-12-21 13:34:26,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267290 states, 267289 states have (on average 1.4194972482967874) internal successors, (379416), 267289 states have internal predecessors, (379416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:34:27,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267290 states to 267290 states and 379416 transitions. [2023-12-21 13:34:27,529 INFO L78 Accepts]: Start accepts. Automaton has 267290 states and 379416 transitions. Word has length 93 [2023-12-21 13:34:27,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:34:27,529 INFO L495 AbstractCegarLoop]: Abstraction has 267290 states and 379416 transitions. [2023-12-21 13:34:27,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:34:27,529 INFO L276 IsEmpty]: Start isEmpty. Operand 267290 states and 379416 transitions. [2023-12-21 13:34:27,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-21 13:34:27,546 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:34:27,547 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] [2023-12-21 13:34:27,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-21 13:34:27,548 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:34:27,548 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:34:27,548 INFO L85 PathProgramCache]: Analyzing trace with hash 585351372, now seen corresponding path program 1 times [2023-12-21 13:34:27,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:34:27,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503971263] [2023-12-21 13:34:27,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:34:27,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:34:27,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:34:27,617 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:34:27,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:34:27,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503971263] [2023-12-21 13:34:27,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503971263] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:34:27,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:34:27,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:34:27,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232898679] [2023-12-21 13:34:27,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:34:27,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:34:27,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:34:27,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:34:27,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:34:27,619 INFO L87 Difference]: Start difference. First operand 267290 states and 379416 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 13:34:30,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:34:30,242 INFO L93 Difference]: Finished difference Result 748565 states and 1060229 transitions. [2023-12-21 13:34:30,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:34:30,242 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 13:34:30,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:34:31,509 INFO L225 Difference]: With dead ends: 748565 [2023-12-21 13:34:31,510 INFO L226 Difference]: Without dead ends: 497978 [2023-12-21 13:34:31,672 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 13:34:31,676 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 104 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 358 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:34:31,676 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 358 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:34:31,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497978 states. [2023-12-21 13:34:37,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497978 to 497657. [2023-12-21 13:34:38,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 497657 states, 497656 states have (on average 1.4025431221566704) internal successors, (697984), 497656 states have internal predecessors, (697984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:34:40,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497657 states to 497657 states and 697984 transitions. [2023-12-21 13:34:40,240 INFO L78 Accepts]: Start accepts. Automaton has 497657 states and 697984 transitions. Word has length 93 [2023-12-21 13:34:40,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:34:40,240 INFO L495 AbstractCegarLoop]: Abstraction has 497657 states and 697984 transitions. [2023-12-21 13:34:40,240 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 13:34:40,240 INFO L276 IsEmpty]: Start isEmpty. Operand 497657 states and 697984 transitions. [2023-12-21 13:34:40,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-21 13:34:40,289 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:34:40,289 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:34:40,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-21 13:34:40,290 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:34:40,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:34:40,290 INFO L85 PathProgramCache]: Analyzing trace with hash 945521640, now seen corresponding path program 1 times [2023-12-21 13:34:40,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:34:40,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276228505] [2023-12-21 13:34:40,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:34:40,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:34:40,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:34:40,443 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-21 13:34:40,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:34:40,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276228505] [2023-12-21 13:34:40,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276228505] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:34:40,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:34:40,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 13:34:40,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687040497] [2023-12-21 13:34:40,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:34:40,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 13:34:40,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:34:40,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 13:34:40,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-21 13:34:40,445 INFO L87 Difference]: Start difference. First operand 497657 states and 697984 transitions. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 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 13:34:45,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:34:45,000 INFO L93 Difference]: Finished difference Result 1101304 states and 1560172 transitions. [2023-12-21 13:34:45,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 13:34:45,001 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 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 93 [2023-12-21 13:34:45,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:34:47,632 INFO L225 Difference]: With dead ends: 1101304 [2023-12-21 13:34:47,633 INFO L226 Difference]: Without dead ends: 955987 [2023-12-21 13:34:47,861 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-21 13:34:47,862 INFO L413 NwaCegarLoop]: 327 mSDtfsCounter, 1212 mSDsluCounter, 1179 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1212 SdHoareTripleChecker+Valid, 1506 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 13:34:47,862 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1212 Valid, 1506 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 13:34:49,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 955987 states. [2023-12-21 13:34:57,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 955987 to 635864. [2023-12-21 13:34:58,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 635864 states, 635863 states have (on average 1.4021039123207357) internal successors, (891546), 635863 states have internal predecessors, (891546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:35:01,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 635864 states to 635864 states and 891546 transitions. [2023-12-21 13:35:01,158 INFO L78 Accepts]: Start accepts. Automaton has 635864 states and 891546 transitions. Word has length 93 [2023-12-21 13:35:01,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:35:01,160 INFO L495 AbstractCegarLoop]: Abstraction has 635864 states and 891546 transitions. [2023-12-21 13:35:01,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 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 13:35:01,160 INFO L276 IsEmpty]: Start isEmpty. Operand 635864 states and 891546 transitions. [2023-12-21 13:35:01,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-21 13:35:01,179 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:35:01,179 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:35:01,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-21 13:35:01,180 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:35:01,180 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:35:01,180 INFO L85 PathProgramCache]: Analyzing trace with hash 290015031, now seen corresponding path program 1 times [2023-12-21 13:35:01,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:35:01,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65828302] [2023-12-21 13:35:01,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:35:01,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:35:01,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:35:01,407 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-21 13:35:01,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:35:01,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65828302] [2023-12-21 13:35:01,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65828302] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:35:01,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:35:01,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 13:35:01,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054495943] [2023-12-21 13:35:01,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:35:01,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 13:35:01,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:35:01,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 13:35:01,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-21 13:35:01,409 INFO L87 Difference]: Start difference. First operand 635864 states and 891546 transitions. Second operand has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:35:06,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:35:06,167 INFO L93 Difference]: Finished difference Result 1194706 states and 1690360 transitions. [2023-12-21 13:35:06,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 13:35:06,168 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 0 states have call successors, (0), 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 13:35:06,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:35:09,143 INFO L225 Difference]: With dead ends: 1194706 [2023-12-21 13:35:09,144 INFO L226 Difference]: Without dead ends: 1073157 [2023-12-21 13:35:09,403 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-21 13:35:09,413 INFO L413 NwaCegarLoop]: 325 mSDtfsCounter, 1295 mSDsluCounter, 1151 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1295 SdHoareTripleChecker+Valid, 1476 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 13:35:09,414 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1295 Valid, 1476 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 13:35:10,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1073157 states. [2023-12-21 13:35:20,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1073157 to 734104. [2023-12-21 13:35:21,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 734104 states, 734103 states have (on average 1.4029557160235009) internal successors, (1029914), 734103 states have internal predecessors, (1029914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:35:24,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 734104 states to 734104 states and 1029914 transitions. [2023-12-21 13:35:24,021 INFO L78 Accepts]: Start accepts. Automaton has 734104 states and 1029914 transitions. Word has length 93 [2023-12-21 13:35:24,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:35:24,021 INFO L495 AbstractCegarLoop]: Abstraction has 734104 states and 1029914 transitions. [2023-12-21 13:35:24,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:35:24,022 INFO L276 IsEmpty]: Start isEmpty. Operand 734104 states and 1029914 transitions. [2023-12-21 13:35:24,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-12-21 13:35:24,043 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:35:24,044 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:35:24,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-21 13:35:24,044 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:35:24,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:35:24,044 INFO L85 PathProgramCache]: Analyzing trace with hash -840868212, now seen corresponding path program 1 times [2023-12-21 13:35:24,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:35:24,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843709089] [2023-12-21 13:35:24,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:35:24,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:35:24,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:35:24,139 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-21 13:35:24,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:35:24,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843709089] [2023-12-21 13:35:24,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843709089] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:35:24,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:35:24,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 13:35:24,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618786378] [2023-12-21 13:35:24,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:35:24,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 13:35:24,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:35:24,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 13:35:24,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-21 13:35:24,141 INFO L87 Difference]: Start difference. First operand 734104 states and 1029914 transitions. Second operand has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:35:29,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:35:29,245 INFO L93 Difference]: Finished difference Result 1232903 states and 1742018 transitions. [2023-12-21 13:35:29,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 13:35:29,246 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 0 states have call successors, (0), 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 13:35:29,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:35:32,510 INFO L225 Difference]: With dead ends: 1232903 [2023-12-21 13:35:32,510 INFO L226 Difference]: Without dead ends: 1151749 [2023-12-21 13:35:33,030 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-21 13:35:33,031 INFO L413 NwaCegarLoop]: 323 mSDtfsCounter, 1197 mSDsluCounter, 1246 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1197 SdHoareTripleChecker+Valid, 1569 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:35:33,031 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1197 Valid, 1569 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:35:33,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1151749 states. [2023-12-21 13:35:43,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1151749 to 812696. [2023-12-21 13:35:45,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 812696 states, 812695 states have (on average 1.4033628852152407) internal successors, (1140506), 812695 states have internal predecessors, (1140506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:35:48,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 812696 states to 812696 states and 1140506 transitions. [2023-12-21 13:35:48,588 INFO L78 Accepts]: Start accepts. Automaton has 812696 states and 1140506 transitions. Word has length 93 [2023-12-21 13:35:48,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:35:48,589 INFO L495 AbstractCegarLoop]: Abstraction has 812696 states and 1140506 transitions. [2023-12-21 13:35:48,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:35:48,589 INFO L276 IsEmpty]: Start isEmpty. Operand 812696 states and 1140506 transitions. [2023-12-21 13:35:48,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-12-21 13:35:48,650 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:35:48,650 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:35:48,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-21 13:35:48,651 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:35:48,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:35:48,651 INFO L85 PathProgramCache]: Analyzing trace with hash -1123702721, now seen corresponding path program 1 times [2023-12-21 13:35:48,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:35:48,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300828742] [2023-12-21 13:35:48,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:35:48,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:35:48,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:35:48,883 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-21 13:35:48,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:35:48,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300828742] [2023-12-21 13:35:48,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300828742] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:35:48,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:35:48,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 13:35:48,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793193921] [2023-12-21 13:35:48,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:35:48,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 13:35:48,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:35:48,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 13:35:48,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-21 13:35:48,884 INFO L87 Difference]: Start difference. First operand 812696 states and 1140506 transitions. Second operand has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 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 13:35:54,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:35:54,606 INFO L93 Difference]: Finished difference Result 1410825 states and 1992235 transitions. [2023-12-21 13:35:54,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 13:35:54,607 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 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 94 [2023-12-21 13:35:54,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:35:58,468 INFO L225 Difference]: With dead ends: 1410825 [2023-12-21 13:35:58,468 INFO L226 Difference]: Without dead ends: 1279815 [2023-12-21 13:35:59,018 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-12-21 13:35:59,021 INFO L413 NwaCegarLoop]: 331 mSDtfsCounter, 1176 mSDsluCounter, 1487 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1176 SdHoareTripleChecker+Valid, 1818 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 13:35:59,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1176 Valid, 1818 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 13:36:00,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1279815 states. [2023-12-21 13:36:13,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1279815 to 912248. [2023-12-21 13:36:14,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 912248 states, 912247 states have (on average 1.4025927188579408) internal successors, (1279511), 912247 states have internal predecessors, (1279511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:36:19,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 912248 states to 912248 states and 1279511 transitions. [2023-12-21 13:36:19,869 INFO L78 Accepts]: Start accepts. Automaton has 912248 states and 1279511 transitions. Word has length 94 [2023-12-21 13:36:19,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:36:19,869 INFO L495 AbstractCegarLoop]: Abstraction has 912248 states and 1279511 transitions. [2023-12-21 13:36:19,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 7 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 13:36:19,870 INFO L276 IsEmpty]: Start isEmpty. Operand 912248 states and 1279511 transitions. [2023-12-21 13:36:19,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-12-21 13:36:19,906 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:36:19,907 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:36:19,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-21 13:36:19,907 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:36:19,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:36:19,907 INFO L85 PathProgramCache]: Analyzing trace with hash 281603343, now seen corresponding path program 1 times [2023-12-21 13:36:19,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:36:19,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110900086] [2023-12-21 13:36:19,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:36:19,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:36:19,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:36:19,947 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 13:36:19,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:36:19,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110900086] [2023-12-21 13:36:19,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110900086] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:36:19,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:36:19,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:36:19,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20530022] [2023-12-21 13:36:19,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:36:19,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:36:19,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:36:19,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:36:19,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:36:19,950 INFO L87 Difference]: Start difference. First operand 912248 states and 1279511 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)