/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/locks/test_locks_15-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 18:10:47,163 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 18:10:47,225 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-15 18:10:47,228 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 18:10:47,228 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 18:10:47,245 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 18:10:47,246 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 18:10:47,246 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 18:10:47,247 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 18:10:47,250 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 18:10:47,251 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 18:10:47,251 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 18:10:47,251 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 18:10:47,253 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 18:10:47,253 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 18:10:47,253 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 18:10:47,253 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 18:10:47,253 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 18:10:47,253 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 18:10:47,253 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 18:10:47,254 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 18:10:47,254 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 18:10:47,254 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 18:10:47,254 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 18:10:47,254 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 18:10:47,254 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 18:10:47,255 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 18:10:47,255 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 18:10:47,255 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 18:10:47,255 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 18:10:47,256 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 18:10:47,256 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 18:10:47,256 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 18:10:47,256 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 18:10:47,256 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 18:10:47,256 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 18:10:47,257 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 18:10:47,257 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 18:10:47,257 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 18:10:47,257 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 18:10:47,257 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 18:10:47,257 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 18:10:47,257 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 18:10:47,257 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 18:10:47,456 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 18:10:47,470 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 18:10:47,471 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 18:10:47,472 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 18:10:47,472 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 18:10:47,473 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/locks/test_locks_15-2.c [2023-12-15 18:10:48,508 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 18:10:48,647 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 18:10:48,648 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/locks/test_locks_15-2.c [2023-12-15 18:10:48,653 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5059a8ef2/f192b1440d714a989d7e25eee7f8ba35/FLAG3ae7236ae [2023-12-15 18:10:48,662 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5059a8ef2/f192b1440d714a989d7e25eee7f8ba35 [2023-12-15 18:10:48,663 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 18:10:48,664 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 18:10:48,665 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 18:10:48,665 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 18:10:48,668 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 18:10:48,668 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 06:10:48" (1/1) ... [2023-12-15 18:10:48,669 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@525c8253 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:10:48, skipping insertion in model container [2023-12-15 18:10:48,669 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 06:10:48" (1/1) ... [2023-12-15 18:10:48,695 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 18:10:48,794 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/locks/test_locks_15-2.c[5628,5641] [2023-12-15 18:10:48,802 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 18:10:48,809 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 18:10:48,827 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/locks/test_locks_15-2.c[5628,5641] [2023-12-15 18:10:48,828 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 18:10:48,836 INFO L206 MainTranslator]: Completed translation [2023-12-15 18:10:48,837 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:10:48 WrapperNode [2023-12-15 18:10:48,837 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 18:10:48,837 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 18:10:48,838 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 18:10:48,838 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 18:10:48,842 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:10:48" (1/1) ... [2023-12-15 18:10:48,846 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:10:48" (1/1) ... [2023-12-15 18:10:48,864 INFO L138 Inliner]: procedures = 12, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 208 [2023-12-15 18:10:48,864 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 18:10:48,865 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 18:10:48,865 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 18:10:48,865 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 18:10:48,871 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:10:48" (1/1) ... [2023-12-15 18:10:48,872 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:10:48" (1/1) ... [2023-12-15 18:10:48,873 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:10:48" (1/1) ... [2023-12-15 18:10:48,888 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]. [2023-12-15 18:10:48,888 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:10:48" (1/1) ... [2023-12-15 18:10:48,888 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:10:48" (1/1) ... [2023-12-15 18:10:48,891 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:10:48" (1/1) ... [2023-12-15 18:10:48,897 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:10:48" (1/1) ... [2023-12-15 18:10:48,898 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:10:48" (1/1) ... [2023-12-15 18:10:48,898 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:10:48" (1/1) ... [2023-12-15 18:10:48,900 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 18:10:48,900 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 18:10:48,901 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 18:10:48,901 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 18:10:48,902 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:10:48" (1/1) ... [2023-12-15 18:10:48,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 18:10:48,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 18:10:48,927 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) [2023-12-15 18:10:48,942 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 [2023-12-15 18:10:48,960 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 18:10:48,961 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 18:10:48,961 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 18:10:48,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 18:10:49,035 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 18:10:49,037 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 18:10:49,295 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 18:10:49,330 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 18:10:49,330 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-15 18:10:49,331 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 06:10:49 BoogieIcfgContainer [2023-12-15 18:10:49,331 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 18:10:49,332 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 18:10:49,333 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 18:10:49,335 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 18:10:49,335 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 06:10:48" (1/3) ... [2023-12-15 18:10:49,335 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@492a8b65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 06:10:49, skipping insertion in model container [2023-12-15 18:10:49,335 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 06:10:48" (2/3) ... [2023-12-15 18:10:49,336 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@492a8b65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 06:10:49, skipping insertion in model container [2023-12-15 18:10:49,336 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 06:10:49" (3/3) ... [2023-12-15 18:10:49,337 INFO L112 eAbstractionObserver]: Analyzing ICFG test_locks_15-2.c [2023-12-15 18:10:49,348 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 18:10:49,348 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 18:10:49,389 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 18:10:49,394 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;@47856d8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 18:10:49,395 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 18:10:49,399 INFO L276 IsEmpty]: Start isEmpty. Operand has 53 states, 51 states have (on average 1.9607843137254901) internal successors, (100), 52 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:49,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-15 18:10:49,406 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:10:49,408 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] [2023-12-15 18:10:49,409 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:10:49,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:10:49,414 INFO L85 PathProgramCache]: Analyzing trace with hash -916349520, now seen corresponding path program 1 times [2023-12-15 18:10:49,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:10:49,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917877995] [2023-12-15 18:10:49,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:10:49,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:10:49,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:49,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:10:49,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:10:49,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917877995] [2023-12-15 18:10:49,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917877995] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:10:49,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:10:49,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:10:49,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296794634] [2023-12-15 18:10:49,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:10:49,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:10:49,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:10:49,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:10:49,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:10:49,693 INFO L87 Difference]: Start difference. First operand has 53 states, 51 states have (on average 1.9607843137254901) internal successors, (100), 52 states have internal predecessors, (100), 0 states have call successors, (0), 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 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:49,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:10:49,757 INFO L93 Difference]: Finished difference Result 108 states and 201 transitions. [2023-12-15 18:10:49,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:10:49,759 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2023-12-15 18:10:49,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:10:49,766 INFO L225 Difference]: With dead ends: 108 [2023-12-15 18:10:49,766 INFO L226 Difference]: Without dead ends: 98 [2023-12-15 18:10:49,768 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 [2023-12-15 18:10:49,785 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 75 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:10:49,786 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 190 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 18:10:49,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2023-12-15 18:10:49,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 66. [2023-12-15 18:10:49,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 65 states have (on average 1.9230769230769231) internal successors, (125), 65 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:49,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 125 transitions. [2023-12-15 18:10:49,812 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 125 transitions. Word has length 21 [2023-12-15 18:10:49,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:10:49,812 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 125 transitions. [2023-12-15 18:10:49,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:49,813 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 125 transitions. [2023-12-15 18:10:49,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-15 18:10:49,813 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:10:49,813 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:10:49,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-15 18:10:49,814 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:10:49,814 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:10:49,815 INFO L85 PathProgramCache]: Analyzing trace with hash 1384473070, now seen corresponding path program 1 times [2023-12-15 18:10:49,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:10:49,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976228233] [2023-12-15 18:10:49,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:10:49,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:10:49,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:49,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:10:49,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:10:49,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976228233] [2023-12-15 18:10:49,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976228233] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:10:49,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:10:49,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:10:49,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651987590] [2023-12-15 18:10:49,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:10:49,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:10:49,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:10:49,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:10:49,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:10:49,874 INFO L87 Difference]: Start difference. First operand 66 states and 125 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:49,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:10:49,900 INFO L93 Difference]: Finished difference Result 163 states and 308 transitions. [2023-12-15 18:10:49,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:10:49,901 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2023-12-15 18:10:49,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:10:49,904 INFO L225 Difference]: With dead ends: 163 [2023-12-15 18:10:49,904 INFO L226 Difference]: Without dead ends: 98 [2023-12-15 18:10:49,905 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 [2023-12-15 18:10:49,906 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 73 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 210 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:10:49,907 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 210 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 18:10:49,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2023-12-15 18:10:49,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 96. [2023-12-15 18:10:49,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 95 states have (on average 1.9052631578947368) internal successors, (181), 95 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:49,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 181 transitions. [2023-12-15 18:10:49,918 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 181 transitions. Word has length 21 [2023-12-15 18:10:49,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:10:49,919 INFO L495 AbstractCegarLoop]: Abstraction has 96 states and 181 transitions. [2023-12-15 18:10:49,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:49,919 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 181 transitions. [2023-12-15 18:10:49,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-12-15 18:10:49,919 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:10:49,920 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] [2023-12-15 18:10:49,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-15 18:10:49,920 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:10:49,920 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:10:49,920 INFO L85 PathProgramCache]: Analyzing trace with hash 1658147680, now seen corresponding path program 1 times [2023-12-15 18:10:49,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:10:49,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449482717] [2023-12-15 18:10:49,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:10:49,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:10:49,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:49,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:10:49,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:10:49,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449482717] [2023-12-15 18:10:49,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449482717] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:10:49,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:10:49,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:10:49,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635979105] [2023-12-15 18:10:49,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:10:49,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:10:49,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:10:49,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:10:49,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:10:49,969 INFO L87 Difference]: Start difference. First operand 96 states and 181 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:49,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:10:49,981 INFO L93 Difference]: Finished difference Result 149 states and 275 transitions. [2023-12-15 18:10:49,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:10:49,982 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 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 22 [2023-12-15 18:10:49,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:10:49,983 INFO L225 Difference]: With dead ends: 149 [2023-12-15 18:10:49,983 INFO L226 Difference]: Without dead ends: 101 [2023-12-15 18:10:49,983 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 [2023-12-15 18:10:49,984 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 75 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:10:49,984 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 237 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 18:10:49,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2023-12-15 18:10:49,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 99. [2023-12-15 18:10:49,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 98 states have (on average 1.8673469387755102) internal successors, (183), 98 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:49,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 183 transitions. [2023-12-15 18:10:49,989 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 183 transitions. Word has length 22 [2023-12-15 18:10:49,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:10:49,990 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 183 transitions. [2023-12-15 18:10:49,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:49,990 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 183 transitions. [2023-12-15 18:10:49,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-12-15 18:10:49,990 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:10:49,991 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] [2023-12-15 18:10:49,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-15 18:10:49,991 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:10:49,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:10:49,991 INFO L85 PathProgramCache]: Analyzing trace with hash -30796062, now seen corresponding path program 1 times [2023-12-15 18:10:49,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:10:49,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614560142] [2023-12-15 18:10:49,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:10:49,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:10:50,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:50,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:10:50,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:10:50,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614560142] [2023-12-15 18:10:50,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614560142] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:10:50,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:10:50,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:10:50,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442791869] [2023-12-15 18:10:50,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:10:50,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:10:50,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:10:50,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:10:50,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:10:50,051 INFO L87 Difference]: Start difference. First operand 99 states and 183 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:50,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:10:50,070 INFO L93 Difference]: Finished difference Result 192 states and 356 transitions. [2023-12-15 18:10:50,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:10:50,070 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 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 22 [2023-12-15 18:10:50,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:10:50,071 INFO L225 Difference]: With dead ends: 192 [2023-12-15 18:10:50,072 INFO L226 Difference]: Without dead ends: 190 [2023-12-15 18:10:50,072 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 [2023-12-15 18:10:50,073 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 70 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 182 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 [2023-12-15 18:10:50,073 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 182 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 18:10:50,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2023-12-15 18:10:50,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 132. [2023-12-15 18:10:50,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 131 states have (on average 1.8625954198473282) internal successors, (244), 131 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:50,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 244 transitions. [2023-12-15 18:10:50,080 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 244 transitions. Word has length 22 [2023-12-15 18:10:50,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:10:50,080 INFO L495 AbstractCegarLoop]: Abstraction has 132 states and 244 transitions. [2023-12-15 18:10:50,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:50,080 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 244 transitions. [2023-12-15 18:10:50,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-12-15 18:10:50,081 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:10:50,081 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] [2023-12-15 18:10:50,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-15 18:10:50,081 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:10:50,082 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:10:50,082 INFO L85 PathProgramCache]: Analyzing trace with hash -2024940768, now seen corresponding path program 1 times [2023-12-15 18:10:50,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:10:50,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808297682] [2023-12-15 18:10:50,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:10:50,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:10:50,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:50,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:10:50,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:10:50,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808297682] [2023-12-15 18:10:50,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808297682] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:10:50,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:10:50,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:10:50,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270186913] [2023-12-15 18:10:50,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:10:50,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:10:50,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:10:50,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:10:50,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:10:50,126 INFO L87 Difference]: Start difference. First operand 132 states and 244 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:50,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:10:50,142 INFO L93 Difference]: Finished difference Result 320 states and 594 transitions. [2023-12-15 18:10:50,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:10:50,142 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 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 22 [2023-12-15 18:10:50,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:10:50,143 INFO L225 Difference]: With dead ends: 320 [2023-12-15 18:10:50,143 INFO L226 Difference]: Without dead ends: 192 [2023-12-15 18:10:50,145 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 [2023-12-15 18:10:50,152 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 72 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:10:50,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 211 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 18:10:50,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2023-12-15 18:10:50,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 190. [2023-12-15 18:10:50,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 189 states have (on average 1.8518518518518519) internal successors, (350), 189 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:50,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 350 transitions. [2023-12-15 18:10:50,161 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 350 transitions. Word has length 22 [2023-12-15 18:10:50,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:10:50,161 INFO L495 AbstractCegarLoop]: Abstraction has 190 states and 350 transitions. [2023-12-15 18:10:50,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:50,161 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 350 transitions. [2023-12-15 18:10:50,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-15 18:10:50,162 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:10:50,162 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:10:50,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-15 18:10:50,162 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:10:50,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:10:50,162 INFO L85 PathProgramCache]: Analyzing trace with hash -954465853, now seen corresponding path program 1 times [2023-12-15 18:10:50,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:10:50,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005510644] [2023-12-15 18:10:50,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:10:50,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:10:50,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:50,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:10:50,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:10:50,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005510644] [2023-12-15 18:10:50,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005510644] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:10:50,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:10:50,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:10:50,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388922096] [2023-12-15 18:10:50,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:10:50,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:10:50,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:10:50,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:10:50,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:10:50,205 INFO L87 Difference]: Start difference. First operand 190 states and 350 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:50,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:10:50,230 INFO L93 Difference]: Finished difference Result 287 states and 525 transitions. [2023-12-15 18:10:50,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:10:50,231 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 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 23 [2023-12-15 18:10:50,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:10:50,232 INFO L225 Difference]: With dead ends: 287 [2023-12-15 18:10:50,232 INFO L226 Difference]: Without dead ends: 194 [2023-12-15 18:10:50,232 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 [2023-12-15 18:10:50,233 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 74 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:10:50,233 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 233 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 18:10:50,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2023-12-15 18:10:50,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 192. [2023-12-15 18:10:50,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 191 states have (on average 1.8324607329842932) internal successors, (350), 191 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:50,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 350 transitions. [2023-12-15 18:10:50,239 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 350 transitions. Word has length 23 [2023-12-15 18:10:50,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:10:50,240 INFO L495 AbstractCegarLoop]: Abstraction has 192 states and 350 transitions. [2023-12-15 18:10:50,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:50,240 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 350 transitions. [2023-12-15 18:10:50,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-15 18:10:50,240 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:10:50,240 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:10:50,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-15 18:10:50,241 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:10:50,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:10:50,241 INFO L85 PathProgramCache]: Analyzing trace with hash 1651557701, now seen corresponding path program 1 times [2023-12-15 18:10:50,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:10:50,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660942859] [2023-12-15 18:10:50,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:10:50,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:10:50,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:50,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:10:50,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:10:50,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660942859] [2023-12-15 18:10:50,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660942859] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:10:50,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:10:50,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:10:50,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909390615] [2023-12-15 18:10:50,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:10:50,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:10:50,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:10:50,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:10:50,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:10:50,264 INFO L87 Difference]: Start difference. First operand 192 states and 350 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:50,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:10:50,278 INFO L93 Difference]: Finished difference Result 560 states and 1024 transitions. [2023-12-15 18:10:50,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:10:50,279 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 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 23 [2023-12-15 18:10:50,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:10:50,280 INFO L225 Difference]: With dead ends: 560 [2023-12-15 18:10:50,280 INFO L226 Difference]: Without dead ends: 374 [2023-12-15 18:10:50,281 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 [2023-12-15 18:10:50,281 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 72 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:10:50,281 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 184 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 18:10:50,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2023-12-15 18:10:50,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 372. [2023-12-15 18:10:50,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 371 states have (on average 1.8167115902964959) internal successors, (674), 371 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:50,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 674 transitions. [2023-12-15 18:10:50,295 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 674 transitions. Word has length 23 [2023-12-15 18:10:50,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:10:50,296 INFO L495 AbstractCegarLoop]: Abstraction has 372 states and 674 transitions. [2023-12-15 18:10:50,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:50,296 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 674 transitions. [2023-12-15 18:10:50,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-15 18:10:50,297 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:10:50,297 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:10:50,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-15 18:10:50,297 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:10:50,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:10:50,298 INFO L85 PathProgramCache]: Analyzing trace with hash -649264889, now seen corresponding path program 1 times [2023-12-15 18:10:50,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:10:50,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620059161] [2023-12-15 18:10:50,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:10:50,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:10:50,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:50,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:10:50,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:10:50,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620059161] [2023-12-15 18:10:50,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620059161] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:10:50,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:10:50,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:10:50,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598097395] [2023-12-15 18:10:50,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:10:50,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:10:50,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:10:50,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:10:50,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:10:50,330 INFO L87 Difference]: Start difference. First operand 372 states and 674 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:50,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:10:50,348 INFO L93 Difference]: Finished difference Result 480 states and 876 transitions. [2023-12-15 18:10:50,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:10:50,348 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 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 23 [2023-12-15 18:10:50,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:10:50,350 INFO L225 Difference]: With dead ends: 480 [2023-12-15 18:10:50,350 INFO L226 Difference]: Without dead ends: 478 [2023-12-15 18:10:50,350 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 [2023-12-15 18:10:50,351 INFO L413 NwaCegarLoop]: 171 mSDtfsCounter, 67 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 257 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:10:50,353 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 257 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 18:10:50,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 478 states. [2023-12-15 18:10:50,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 478 to 372. [2023-12-15 18:10:50,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 371 states have (on average 1.8059299191374663) internal successors, (670), 371 states have internal predecessors, (670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:50,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 670 transitions. [2023-12-15 18:10:50,372 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 670 transitions. Word has length 23 [2023-12-15 18:10:50,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:10:50,372 INFO L495 AbstractCegarLoop]: Abstraction has 372 states and 670 transitions. [2023-12-15 18:10:50,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:50,372 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 670 transitions. [2023-12-15 18:10:50,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-12-15 18:10:50,378 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:10:50,378 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] [2023-12-15 18:10:50,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-15 18:10:50,378 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:10:50,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:10:50,378 INFO L85 PathProgramCache]: Analyzing trace with hash -341106411, now seen corresponding path program 1 times [2023-12-15 18:10:50,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:10:50,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275919876] [2023-12-15 18:10:50,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:10:50,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:10:50,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:50,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:10:50,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:10:50,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275919876] [2023-12-15 18:10:50,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275919876] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:10:50,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:10:50,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:10:50,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631769424] [2023-12-15 18:10:50,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:10:50,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:10:50,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:10:50,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:10:50,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:10:50,416 INFO L87 Difference]: Start difference. First operand 372 states and 670 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:50,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:10:50,430 INFO L93 Difference]: Finished difference Result 708 states and 1288 transitions. [2023-12-15 18:10:50,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:10:50,430 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 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 24 [2023-12-15 18:10:50,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:10:50,432 INFO L225 Difference]: With dead ends: 708 [2023-12-15 18:10:50,432 INFO L226 Difference]: Without dead ends: 706 [2023-12-15 18:10:50,433 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 [2023-12-15 18:10:50,433 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 64 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 178 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 [2023-12-15 18:10:50,433 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 178 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 18:10:50,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2023-12-15 18:10:50,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 512. [2023-12-15 18:10:50,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 512 states, 511 states have (on average 1.7808219178082192) internal successors, (910), 511 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:50,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 512 states to 512 states and 910 transitions. [2023-12-15 18:10:50,447 INFO L78 Accepts]: Start accepts. Automaton has 512 states and 910 transitions. Word has length 24 [2023-12-15 18:10:50,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:10:50,447 INFO L495 AbstractCegarLoop]: Abstraction has 512 states and 910 transitions. [2023-12-15 18:10:50,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:50,448 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states and 910 transitions. [2023-12-15 18:10:50,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-12-15 18:10:50,448 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:10:50,448 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] [2023-12-15 18:10:50,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-15 18:10:50,448 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:10:50,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:10:50,449 INFO L85 PathProgramCache]: Analyzing trace with hash 1959716179, now seen corresponding path program 1 times [2023-12-15 18:10:50,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:10:50,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533843098] [2023-12-15 18:10:50,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:10:50,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:10:50,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:50,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:10:50,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:10:50,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533843098] [2023-12-15 18:10:50,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533843098] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:10:50,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:10:50,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:10:50,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950276286] [2023-12-15 18:10:50,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:10:50,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:10:50,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:10:50,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:10:50,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:10:50,494 INFO L87 Difference]: Start difference. First operand 512 states and 910 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:50,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:10:50,515 INFO L93 Difference]: Finished difference Result 1236 states and 2208 transitions. [2023-12-15 18:10:50,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:10:50,515 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 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 24 [2023-12-15 18:10:50,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:10:50,517 INFO L225 Difference]: With dead ends: 1236 [2023-12-15 18:10:50,517 INFO L226 Difference]: Without dead ends: 730 [2023-12-15 18:10:50,519 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 [2023-12-15 18:10:50,520 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 70 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:10:50,520 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 213 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 18:10:50,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 730 states. [2023-12-15 18:10:50,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 730 to 728. [2023-12-15 18:10:50,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 728 states, 727 states have (on average 1.7744154057771664) internal successors, (1290), 727 states have internal predecessors, (1290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:50,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 728 states to 728 states and 1290 transitions. [2023-12-15 18:10:50,534 INFO L78 Accepts]: Start accepts. Automaton has 728 states and 1290 transitions. Word has length 24 [2023-12-15 18:10:50,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:10:50,534 INFO L495 AbstractCegarLoop]: Abstraction has 728 states and 1290 transitions. [2023-12-15 18:10:50,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:50,535 INFO L276 IsEmpty]: Start isEmpty. Operand 728 states and 1290 transitions. [2023-12-15 18:10:50,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-12-15 18:10:50,535 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:10:50,535 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] [2023-12-15 18:10:50,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-15 18:10:50,535 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:10:50,536 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:10:50,536 INFO L85 PathProgramCache]: Analyzing trace with hash -1984151398, now seen corresponding path program 1 times [2023-12-15 18:10:50,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:10:50,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217193105] [2023-12-15 18:10:50,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:10:50,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:10:50,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:50,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:10:50,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:10:50,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217193105] [2023-12-15 18:10:50,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217193105] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:10:50,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:10:50,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:10:50,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935732730] [2023-12-15 18:10:50,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:10:50,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:10:50,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:10:50,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:10:50,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:10:50,576 INFO L87 Difference]: Start difference. First operand 728 states and 1290 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:50,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:10:50,592 INFO L93 Difference]: Finished difference Result 1100 states and 1944 transitions. [2023-12-15 18:10:50,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:10:50,593 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 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 25 [2023-12-15 18:10:50,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:10:50,595 INFO L225 Difference]: With dead ends: 1100 [2023-12-15 18:10:50,595 INFO L226 Difference]: Without dead ends: 742 [2023-12-15 18:10:50,596 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 [2023-12-15 18:10:50,596 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 72 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:10:50,596 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 225 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 18:10:50,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 742 states. [2023-12-15 18:10:50,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 742 to 740. [2023-12-15 18:10:50,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 740 states, 739 states have (on average 1.756427604871448) internal successors, (1298), 739 states have internal predecessors, (1298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:50,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 740 states to 740 states and 1298 transitions. [2023-12-15 18:10:50,610 INFO L78 Accepts]: Start accepts. Automaton has 740 states and 1298 transitions. Word has length 25 [2023-12-15 18:10:50,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:10:50,610 INFO L495 AbstractCegarLoop]: Abstraction has 740 states and 1298 transitions. [2023-12-15 18:10:50,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:50,610 INFO L276 IsEmpty]: Start isEmpty. Operand 740 states and 1298 transitions. [2023-12-15 18:10:50,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-12-15 18:10:50,611 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:10:50,611 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] [2023-12-15 18:10:50,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-15 18:10:50,612 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:10:50,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:10:50,613 INFO L85 PathProgramCache]: Analyzing trace with hash 621872156, now seen corresponding path program 1 times [2023-12-15 18:10:50,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:10:50,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337444267] [2023-12-15 18:10:50,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:10:50,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:10:50,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:50,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:10:50,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:10:50,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337444267] [2023-12-15 18:10:50,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337444267] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:10:50,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:10:50,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:10:50,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537559105] [2023-12-15 18:10:50,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:10:50,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:10:50,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:10:50,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:10:50,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:10:50,648 INFO L87 Difference]: Start difference. First operand 740 states and 1298 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:50,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:10:50,668 INFO L93 Difference]: Finished difference Result 1384 states and 2460 transitions. [2023-12-15 18:10:50,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:10:50,669 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 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 25 [2023-12-15 18:10:50,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:10:50,675 INFO L225 Difference]: With dead ends: 1384 [2023-12-15 18:10:50,679 INFO L226 Difference]: Without dead ends: 1382 [2023-12-15 18:10:50,680 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:10:50,681 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 61 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 176 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 [2023-12-15 18:10:50,681 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 176 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 18:10:50,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1382 states. [2023-12-15 18:10:50,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1382 to 1028. [2023-12-15 18:10:50,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1028 states, 1027 states have (on average 1.7234664070107109) internal successors, (1770), 1027 states have internal predecessors, (1770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:50,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1028 states to 1028 states and 1770 transitions. [2023-12-15 18:10:50,701 INFO L78 Accepts]: Start accepts. Automaton has 1028 states and 1770 transitions. Word has length 25 [2023-12-15 18:10:50,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:10:50,701 INFO L495 AbstractCegarLoop]: Abstraction has 1028 states and 1770 transitions. [2023-12-15 18:10:50,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:50,701 INFO L276 IsEmpty]: Start isEmpty. Operand 1028 states and 1770 transitions. [2023-12-15 18:10:50,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-12-15 18:10:50,703 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:10:50,703 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] [2023-12-15 18:10:50,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-15 18:10:50,703 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:10:50,704 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:10:50,704 INFO L85 PathProgramCache]: Analyzing trace with hash -1372272550, now seen corresponding path program 1 times [2023-12-15 18:10:50,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:10:50,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140563324] [2023-12-15 18:10:50,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:10:50,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:10:50,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:50,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:10:50,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:10:50,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140563324] [2023-12-15 18:10:50,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140563324] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:10:50,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:10:50,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:10:50,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782532501] [2023-12-15 18:10:50,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:10:50,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:10:50,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:10:50,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:10:50,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:10:50,729 INFO L87 Difference]: Start difference. First operand 1028 states and 1770 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:50,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:10:50,753 INFO L93 Difference]: Finished difference Result 2456 states and 4252 transitions. [2023-12-15 18:10:50,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:10:50,754 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 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 25 [2023-12-15 18:10:50,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:10:50,757 INFO L225 Difference]: With dead ends: 2456 [2023-12-15 18:10:50,757 INFO L226 Difference]: Without dead ends: 1446 [2023-12-15 18:10:50,758 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 [2023-12-15 18:10:50,760 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 69 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:10:50,771 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 214 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 18:10:50,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1446 states. [2023-12-15 18:10:50,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1446 to 1444. [2023-12-15 18:10:50,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1444 states, 1443 states have (on average 1.72002772002772) internal successors, (2482), 1443 states have internal predecessors, (2482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:50,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1444 states to 1444 states and 2482 transitions. [2023-12-15 18:10:50,797 INFO L78 Accepts]: Start accepts. Automaton has 1444 states and 2482 transitions. Word has length 25 [2023-12-15 18:10:50,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:10:50,798 INFO L495 AbstractCegarLoop]: Abstraction has 1444 states and 2482 transitions. [2023-12-15 18:10:50,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:50,798 INFO L276 IsEmpty]: Start isEmpty. Operand 1444 states and 2482 transitions. [2023-12-15 18:10:50,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-12-15 18:10:50,799 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:10:50,799 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] [2023-12-15 18:10:50,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-15 18:10:50,799 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:10:50,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:10:50,800 INFO L85 PathProgramCache]: Analyzing trace with hash 2098380744, now seen corresponding path program 1 times [2023-12-15 18:10:50,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:10:50,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038295552] [2023-12-15 18:10:50,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:10:50,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:10:50,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:50,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:10:50,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:10:50,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038295552] [2023-12-15 18:10:50,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038295552] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:10:50,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:10:50,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:10:50,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486742448] [2023-12-15 18:10:50,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:10:50,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:10:50,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:10:50,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:10:50,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:10:50,824 INFO L87 Difference]: Start difference. First operand 1444 states and 2482 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:50,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:10:50,848 INFO L93 Difference]: Finished difference Result 2168 states and 3716 transitions. [2023-12-15 18:10:50,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:10:50,848 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2023-12-15 18:10:50,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:10:50,852 INFO L225 Difference]: With dead ends: 2168 [2023-12-15 18:10:50,852 INFO L226 Difference]: Without dead ends: 1462 [2023-12-15 18:10:50,854 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 [2023-12-15 18:10:50,854 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 71 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:10:50,854 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 221 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 18:10:50,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1462 states. [2023-12-15 18:10:50,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1462 to 1460. [2023-12-15 18:10:50,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1460 states, 1459 states have (on average 1.7011651816312543) internal successors, (2482), 1459 states have internal predecessors, (2482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:50,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1460 states to 1460 states and 2482 transitions. [2023-12-15 18:10:50,903 INFO L78 Accepts]: Start accepts. Automaton has 1460 states and 2482 transitions. Word has length 26 [2023-12-15 18:10:50,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:10:50,903 INFO L495 AbstractCegarLoop]: Abstraction has 1460 states and 2482 transitions. [2023-12-15 18:10:50,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:50,903 INFO L276 IsEmpty]: Start isEmpty. Operand 1460 states and 2482 transitions. [2023-12-15 18:10:50,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-12-15 18:10:50,904 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:10:50,904 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:10:50,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-15 18:10:50,904 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:10:50,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:10:50,905 INFO L85 PathProgramCache]: Analyzing trace with hash 409437002, now seen corresponding path program 1 times [2023-12-15 18:10:50,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:10:50,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898322007] [2023-12-15 18:10:50,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:10:50,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:10:50,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:50,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:10:50,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:10:50,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898322007] [2023-12-15 18:10:50,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898322007] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:10:50,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:10:50,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:10:50,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121219171] [2023-12-15 18:10:50,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:10:50,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:10:50,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:10:50,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:10:50,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:10:50,926 INFO L87 Difference]: Start difference. First operand 1460 states and 2482 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:50,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:10:50,955 INFO L93 Difference]: Finished difference Result 2696 states and 4660 transitions. [2023-12-15 18:10:50,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:10:50,956 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2023-12-15 18:10:50,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:10:50,963 INFO L225 Difference]: With dead ends: 2696 [2023-12-15 18:10:50,963 INFO L226 Difference]: Without dead ends: 2694 [2023-12-15 18:10:50,964 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 [2023-12-15 18:10:50,965 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 58 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 174 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 [2023-12-15 18:10:50,965 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 174 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 18:10:50,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2694 states. [2023-12-15 18:10:50,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2694 to 2052. [2023-12-15 18:10:51,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2052 states, 2051 states have (on average 1.6626036079960995) internal successors, (3410), 2051 states have internal predecessors, (3410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:51,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2052 states to 2052 states and 3410 transitions. [2023-12-15 18:10:51,006 INFO L78 Accepts]: Start accepts. Automaton has 2052 states and 3410 transitions. Word has length 26 [2023-12-15 18:10:51,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:10:51,006 INFO L495 AbstractCegarLoop]: Abstraction has 2052 states and 3410 transitions. [2023-12-15 18:10:51,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:51,006 INFO L276 IsEmpty]: Start isEmpty. Operand 2052 states and 3410 transitions. [2023-12-15 18:10:51,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-12-15 18:10:51,008 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:10:51,008 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] [2023-12-15 18:10:51,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-15 18:10:51,008 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:10:51,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:10:51,008 INFO L85 PathProgramCache]: Analyzing trace with hash -1584707704, now seen corresponding path program 1 times [2023-12-15 18:10:51,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:10:51,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948559355] [2023-12-15 18:10:51,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:10:51,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:10:51,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:51,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:10:51,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:10:51,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948559355] [2023-12-15 18:10:51,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948559355] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:10:51,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:10:51,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:10:51,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398100361] [2023-12-15 18:10:51,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:10:51,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:10:51,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:10:51,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:10:51,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:10:51,027 INFO L87 Difference]: Start difference. First operand 2052 states and 3410 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:51,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:10:51,066 INFO L93 Difference]: Finished difference Result 4872 states and 8148 transitions. [2023-12-15 18:10:51,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:10:51,066 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2023-12-15 18:10:51,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:10:51,073 INFO L225 Difference]: With dead ends: 4872 [2023-12-15 18:10:51,073 INFO L226 Difference]: Without dead ends: 2854 [2023-12-15 18:10:51,075 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 [2023-12-15 18:10:51,077 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 68 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:10:51,078 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 215 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 18:10:51,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2854 states. [2023-12-15 18:10:51,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2854 to 2852. [2023-12-15 18:10:51,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2852 states, 2851 states have (on average 1.6618730270080673) internal successors, (4738), 2851 states have internal predecessors, (4738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:51,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2852 states to 2852 states and 4738 transitions. [2023-12-15 18:10:51,133 INFO L78 Accepts]: Start accepts. Automaton has 2852 states and 4738 transitions. Word has length 26 [2023-12-15 18:10:51,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:10:51,133 INFO L495 AbstractCegarLoop]: Abstraction has 2852 states and 4738 transitions. [2023-12-15 18:10:51,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:51,133 INFO L276 IsEmpty]: Start isEmpty. Operand 2852 states and 4738 transitions. [2023-12-15 18:10:51,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-12-15 18:10:51,135 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:10:51,135 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] [2023-12-15 18:10:51,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-15 18:10:51,135 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:10:51,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:10:51,136 INFO L85 PathProgramCache]: Analyzing trace with hash -192141393, now seen corresponding path program 1 times [2023-12-15 18:10:51,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:10:51,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024867440] [2023-12-15 18:10:51,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:10:51,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:10:51,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:51,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:10:51,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:10:51,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024867440] [2023-12-15 18:10:51,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024867440] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:10:51,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:10:51,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:10:51,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016466562] [2023-12-15 18:10:51,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:10:51,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:10:51,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:10:51,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:10:51,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:10:51,161 INFO L87 Difference]: Start difference. First operand 2852 states and 4738 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:51,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:10:51,198 INFO L93 Difference]: Finished difference Result 4280 states and 7092 transitions. [2023-12-15 18:10:51,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:10:51,198 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 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 27 [2023-12-15 18:10:51,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:10:51,223 INFO L225 Difference]: With dead ends: 4280 [2023-12-15 18:10:51,223 INFO L226 Difference]: Without dead ends: 2886 [2023-12-15 18:10:51,224 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 [2023-12-15 18:10:51,225 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 70 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:10:51,226 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 217 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 18:10:51,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2886 states. [2023-12-15 18:10:51,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2886 to 2884. [2023-12-15 18:10:51,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2884 states, 2883 states have (on average 1.6434269857787027) internal successors, (4738), 2883 states have internal predecessors, (4738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:51,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2884 states to 2884 states and 4738 transitions. [2023-12-15 18:10:51,282 INFO L78 Accepts]: Start accepts. Automaton has 2884 states and 4738 transitions. Word has length 27 [2023-12-15 18:10:51,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:10:51,282 INFO L495 AbstractCegarLoop]: Abstraction has 2884 states and 4738 transitions. [2023-12-15 18:10:51,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:51,282 INFO L276 IsEmpty]: Start isEmpty. Operand 2884 states and 4738 transitions. [2023-12-15 18:10:51,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-12-15 18:10:51,284 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:10:51,284 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] [2023-12-15 18:10:51,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-15 18:10:51,284 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:10:51,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:10:51,285 INFO L85 PathProgramCache]: Analyzing trace with hash -1881085135, now seen corresponding path program 1 times [2023-12-15 18:10:51,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:10:51,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422925405] [2023-12-15 18:10:51,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:10:51,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:10:51,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:51,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:10:51,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:10:51,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422925405] [2023-12-15 18:10:51,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422925405] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:10:51,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:10:51,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:10:51,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093693601] [2023-12-15 18:10:51,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:10:51,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:10:51,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:10:51,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:10:51,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:10:51,303 INFO L87 Difference]: Start difference. First operand 2884 states and 4738 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:51,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:10:51,362 INFO L93 Difference]: Finished difference Result 5256 states and 8804 transitions. [2023-12-15 18:10:51,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:10:51,363 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 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 27 [2023-12-15 18:10:51,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:10:51,377 INFO L225 Difference]: With dead ends: 5256 [2023-12-15 18:10:51,377 INFO L226 Difference]: Without dead ends: 5254 [2023-12-15 18:10:51,379 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 [2023-12-15 18:10:51,379 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 55 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 172 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 [2023-12-15 18:10:51,379 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 172 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 18:10:51,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5254 states. [2023-12-15 18:10:51,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5254 to 4100. [2023-12-15 18:10:51,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4100 states, 4099 states have (on average 1.6008782629909735) internal successors, (6562), 4099 states have internal predecessors, (6562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:51,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4100 states to 4100 states and 6562 transitions. [2023-12-15 18:10:51,471 INFO L78 Accepts]: Start accepts. Automaton has 4100 states and 6562 transitions. Word has length 27 [2023-12-15 18:10:51,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:10:51,472 INFO L495 AbstractCegarLoop]: Abstraction has 4100 states and 6562 transitions. [2023-12-15 18:10:51,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:51,472 INFO L276 IsEmpty]: Start isEmpty. Operand 4100 states and 6562 transitions. [2023-12-15 18:10:51,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-12-15 18:10:51,475 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:10:51,475 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:10:51,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-15 18:10:51,475 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:10:51,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:10:51,476 INFO L85 PathProgramCache]: Analyzing trace with hash 419737455, now seen corresponding path program 1 times [2023-12-15 18:10:51,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:10:51,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666010105] [2023-12-15 18:10:51,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:10:51,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:10:51,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:51,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:10:51,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:10:51,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666010105] [2023-12-15 18:10:51,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666010105] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:10:51,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:10:51,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:10:51,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939575172] [2023-12-15 18:10:51,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:10:51,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:10:51,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:10:51,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:10:51,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:10:51,495 INFO L87 Difference]: Start difference. First operand 4100 states and 6562 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:51,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:10:51,593 INFO L93 Difference]: Finished difference Result 9672 states and 15588 transitions. [2023-12-15 18:10:51,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:10:51,594 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 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 27 [2023-12-15 18:10:51,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:10:51,616 INFO L225 Difference]: With dead ends: 9672 [2023-12-15 18:10:51,616 INFO L226 Difference]: Without dead ends: 5638 [2023-12-15 18:10:51,621 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 [2023-12-15 18:10:51,622 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 67 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:10:51,622 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 216 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 18:10:51,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5638 states. [2023-12-15 18:10:51,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5638 to 5636. [2023-12-15 18:10:51,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5636 states, 5635 states have (on average 1.6017746228926353) internal successors, (9026), 5635 states have internal predecessors, (9026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:51,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5636 states to 5636 states and 9026 transitions. [2023-12-15 18:10:51,760 INFO L78 Accepts]: Start accepts. Automaton has 5636 states and 9026 transitions. Word has length 27 [2023-12-15 18:10:51,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:10:51,760 INFO L495 AbstractCegarLoop]: Abstraction has 5636 states and 9026 transitions. [2023-12-15 18:10:51,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:51,760 INFO L276 IsEmpty]: Start isEmpty. Operand 5636 states and 9026 transitions. [2023-12-15 18:10:51,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-12-15 18:10:51,764 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:10:51,764 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] [2023-12-15 18:10:51,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-15 18:10:51,765 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:10:51,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:10:51,765 INFO L85 PathProgramCache]: Analyzing trace with hash 1816116733, now seen corresponding path program 1 times [2023-12-15 18:10:51,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:10:51,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300623943] [2023-12-15 18:10:51,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:10:51,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:10:51,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:51,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:10:51,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:10:51,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300623943] [2023-12-15 18:10:51,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300623943] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:10:51,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:10:51,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:10:51,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863083903] [2023-12-15 18:10:51,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:10:51,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:10:51,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:10:51,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:10:51,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:10:51,785 INFO L87 Difference]: Start difference. First operand 5636 states and 9026 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:51,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:10:51,851 INFO L93 Difference]: Finished difference Result 8456 states and 13508 transitions. [2023-12-15 18:10:51,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:10:51,851 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 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 28 [2023-12-15 18:10:51,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:10:51,861 INFO L225 Difference]: With dead ends: 8456 [2023-12-15 18:10:51,861 INFO L226 Difference]: Without dead ends: 5702 [2023-12-15 18:10:51,864 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 [2023-12-15 18:10:51,865 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 69 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:10:51,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 213 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 18:10:51,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5702 states. [2023-12-15 18:10:51,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5702 to 5700. [2023-12-15 18:10:51,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5700 states, 5699 states have (on average 1.5837866292331988) internal successors, (9026), 5699 states have internal predecessors, (9026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:52,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5700 states to 5700 states and 9026 transitions. [2023-12-15 18:10:52,004 INFO L78 Accepts]: Start accepts. Automaton has 5700 states and 9026 transitions. Word has length 28 [2023-12-15 18:10:52,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:10:52,004 INFO L495 AbstractCegarLoop]: Abstraction has 5700 states and 9026 transitions. [2023-12-15 18:10:52,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:52,005 INFO L276 IsEmpty]: Start isEmpty. Operand 5700 states and 9026 transitions. [2023-12-15 18:10:52,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-12-15 18:10:52,009 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:10:52,009 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] [2023-12-15 18:10:52,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-15 18:10:52,009 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:10:52,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:10:52,010 INFO L85 PathProgramCache]: Analyzing trace with hash 127172991, now seen corresponding path program 1 times [2023-12-15 18:10:52,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:10:52,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105837825] [2023-12-15 18:10:52,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:10:52,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:10:52,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:52,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:10:52,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:10:52,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105837825] [2023-12-15 18:10:52,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105837825] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:10:52,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:10:52,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:10:52,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438920341] [2023-12-15 18:10:52,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:10:52,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:10:52,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:10:52,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:10:52,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:10:52,029 INFO L87 Difference]: Start difference. First operand 5700 states and 9026 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:52,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:10:52,134 INFO L93 Difference]: Finished difference Result 10248 states and 16580 transitions. [2023-12-15 18:10:52,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:10:52,135 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 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 28 [2023-12-15 18:10:52,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:10:52,151 INFO L225 Difference]: With dead ends: 10248 [2023-12-15 18:10:52,151 INFO L226 Difference]: Without dead ends: 10246 [2023-12-15 18:10:52,156 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 [2023-12-15 18:10:52,156 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 52 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 170 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 [2023-12-15 18:10:52,156 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 170 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 18:10:52,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10246 states. [2023-12-15 18:10:52,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10246 to 8196. [2023-12-15 18:10:52,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8196 states, 8195 states have (on average 1.5387431360585724) internal successors, (12610), 8195 states have internal predecessors, (12610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:52,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8196 states to 8196 states and 12610 transitions. [2023-12-15 18:10:52,338 INFO L78 Accepts]: Start accepts. Automaton has 8196 states and 12610 transitions. Word has length 28 [2023-12-15 18:10:52,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:10:52,339 INFO L495 AbstractCegarLoop]: Abstraction has 8196 states and 12610 transitions. [2023-12-15 18:10:52,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:52,339 INFO L276 IsEmpty]: Start isEmpty. Operand 8196 states and 12610 transitions. [2023-12-15 18:10:52,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-12-15 18:10:52,346 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:10:52,346 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] [2023-12-15 18:10:52,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-15 18:10:52,346 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:10:52,347 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:10:52,347 INFO L85 PathProgramCache]: Analyzing trace with hash -1866971715, now seen corresponding path program 1 times [2023-12-15 18:10:52,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:10:52,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008540404] [2023-12-15 18:10:52,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:10:52,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:10:52,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:52,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:10:52,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:10:52,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008540404] [2023-12-15 18:10:52,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008540404] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:10:52,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:10:52,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:10:52,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561091216] [2023-12-15 18:10:52,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:10:52,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:10:52,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:10:52,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:10:52,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:10:52,373 INFO L87 Difference]: Start difference. First operand 8196 states and 12610 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:52,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:10:52,531 INFO L93 Difference]: Finished difference Result 19208 states and 29764 transitions. [2023-12-15 18:10:52,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:10:52,532 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 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 28 [2023-12-15 18:10:52,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:10:52,548 INFO L225 Difference]: With dead ends: 19208 [2023-12-15 18:10:52,548 INFO L226 Difference]: Without dead ends: 11142 [2023-12-15 18:10:52,556 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 [2023-12-15 18:10:52,557 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 66 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:10:52,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 217 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 18:10:52,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11142 states. [2023-12-15 18:10:52,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11142 to 11140. [2023-12-15 18:10:52,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11140 states, 11139 states have (on average 1.5399946135200646) internal successors, (17154), 11139 states have internal predecessors, (17154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:52,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11140 states to 11140 states and 17154 transitions. [2023-12-15 18:10:52,835 INFO L78 Accepts]: Start accepts. Automaton has 11140 states and 17154 transitions. Word has length 28 [2023-12-15 18:10:52,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:10:52,835 INFO L495 AbstractCegarLoop]: Abstraction has 11140 states and 17154 transitions. [2023-12-15 18:10:52,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:52,836 INFO L276 IsEmpty]: Start isEmpty. Operand 11140 states and 17154 transitions. [2023-12-15 18:10:52,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-12-15 18:10:52,844 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:10:52,844 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] [2023-12-15 18:10:52,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-15 18:10:52,844 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:10:52,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:10:52,845 INFO L85 PathProgramCache]: Analyzing trace with hash -352390460, now seen corresponding path program 1 times [2023-12-15 18:10:52,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:10:52,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978517115] [2023-12-15 18:10:52,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:10:52,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:10:52,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:52,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:10:52,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:10:52,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978517115] [2023-12-15 18:10:52,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978517115] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:10:52,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:10:52,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:10:52,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495170806] [2023-12-15 18:10:52,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:10:52,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:10:52,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:10:52,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:10:52,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:10:52,862 INFO L87 Difference]: Start difference. First operand 11140 states and 17154 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:52,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:10:52,993 INFO L93 Difference]: Finished difference Result 16712 states and 25668 transitions. [2023-12-15 18:10:52,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:10:52,994 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 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 29 [2023-12-15 18:10:52,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:10:53,011 INFO L225 Difference]: With dead ends: 16712 [2023-12-15 18:10:53,011 INFO L226 Difference]: Without dead ends: 11270 [2023-12-15 18:10:53,020 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 [2023-12-15 18:10:53,021 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 68 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:10:53,022 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 209 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 18:10:53,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11270 states. [2023-12-15 18:10:53,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11270 to 11268. [2023-12-15 18:10:53,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11268 states, 11267 states have (on average 1.5224993343392208) internal successors, (17154), 11267 states have internal predecessors, (17154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:53,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11268 states to 11268 states and 17154 transitions. [2023-12-15 18:10:53,280 INFO L78 Accepts]: Start accepts. Automaton has 11268 states and 17154 transitions. Word has length 29 [2023-12-15 18:10:53,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:10:53,280 INFO L495 AbstractCegarLoop]: Abstraction has 11268 states and 17154 transitions. [2023-12-15 18:10:53,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:53,280 INFO L276 IsEmpty]: Start isEmpty. Operand 11268 states and 17154 transitions. [2023-12-15 18:10:53,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-12-15 18:10:53,288 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:10:53,288 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] [2023-12-15 18:10:53,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-15 18:10:53,288 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:10:53,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:10:53,288 INFO L85 PathProgramCache]: Analyzing trace with hash -2041334202, now seen corresponding path program 1 times [2023-12-15 18:10:53,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:10:53,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902966216] [2023-12-15 18:10:53,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:10:53,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:10:53,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:53,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:10:53,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:10:53,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902966216] [2023-12-15 18:10:53,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902966216] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:10:53,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:10:53,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:10:53,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229325994] [2023-12-15 18:10:53,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:10:53,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:10:53,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:10:53,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:10:53,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:10:53,315 INFO L87 Difference]: Start difference. First operand 11268 states and 17154 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:53,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:10:53,552 INFO L93 Difference]: Finished difference Result 19976 states and 31108 transitions. [2023-12-15 18:10:53,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:10:53,552 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 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 29 [2023-12-15 18:10:53,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:10:53,584 INFO L225 Difference]: With dead ends: 19976 [2023-12-15 18:10:53,584 INFO L226 Difference]: Without dead ends: 19974 [2023-12-15 18:10:53,587 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 [2023-12-15 18:10:53,588 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 49 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 168 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 [2023-12-15 18:10:53,589 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 168 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 18:10:53,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19974 states. [2023-12-15 18:10:53,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19974 to 16388. [2023-12-15 18:10:53,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16388 states, 16387 states have (on average 1.4764142307927015) internal successors, (24194), 16387 states have internal predecessors, (24194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:53,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16388 states to 16388 states and 24194 transitions. [2023-12-15 18:10:53,900 INFO L78 Accepts]: Start accepts. Automaton has 16388 states and 24194 transitions. Word has length 29 [2023-12-15 18:10:53,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:10:53,900 INFO L495 AbstractCegarLoop]: Abstraction has 16388 states and 24194 transitions. [2023-12-15 18:10:53,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:53,900 INFO L276 IsEmpty]: Start isEmpty. Operand 16388 states and 24194 transitions. [2023-12-15 18:10:53,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-12-15 18:10:53,914 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:10:53,914 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] [2023-12-15 18:10:53,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-15 18:10:53,915 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:10:53,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:10:53,915 INFO L85 PathProgramCache]: Analyzing trace with hash 259488388, now seen corresponding path program 1 times [2023-12-15 18:10:53,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:10:53,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251586316] [2023-12-15 18:10:53,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:10:53,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:10:53,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:53,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:10:53,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:10:53,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251586316] [2023-12-15 18:10:53,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251586316] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:10:53,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:10:53,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:10:53,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431454667] [2023-12-15 18:10:53,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:10:53,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:10:53,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:10:53,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:10:53,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:10:53,932 INFO L87 Difference]: Start difference. First operand 16388 states and 24194 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:54,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:10:54,250 INFO L93 Difference]: Finished difference Result 38152 states and 56708 transitions. [2023-12-15 18:10:54,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:10:54,251 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 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 29 [2023-12-15 18:10:54,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:10:54,280 INFO L225 Difference]: With dead ends: 38152 [2023-12-15 18:10:54,281 INFO L226 Difference]: Without dead ends: 22022 [2023-12-15 18:10:54,296 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 [2023-12-15 18:10:54,299 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 65 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:10:54,300 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 218 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 18:10:54,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22022 states. [2023-12-15 18:10:54,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22022 to 22020. [2023-12-15 18:10:54,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22020 states, 22019 states have (on average 1.4766338162496027) internal successors, (32514), 22019 states have internal predecessors, (32514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:54,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22020 states to 22020 states and 32514 transitions. [2023-12-15 18:10:54,773 INFO L78 Accepts]: Start accepts. Automaton has 22020 states and 32514 transitions. Word has length 29 [2023-12-15 18:10:54,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:10:54,773 INFO L495 AbstractCegarLoop]: Abstraction has 22020 states and 32514 transitions. [2023-12-15 18:10:54,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:54,774 INFO L276 IsEmpty]: Start isEmpty. Operand 22020 states and 32514 transitions. [2023-12-15 18:10:54,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-12-15 18:10:54,788 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:10:54,788 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] [2023-12-15 18:10:54,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-15 18:10:54,789 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:10:54,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:10:54,789 INFO L85 PathProgramCache]: Analyzing trace with hash 1143363634, now seen corresponding path program 1 times [2023-12-15 18:10:54,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:10:54,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748250261] [2023-12-15 18:10:54,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:10:54,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:10:54,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:54,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:10:54,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:10:54,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748250261] [2023-12-15 18:10:54,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748250261] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:10:54,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:10:54,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:10:54,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400744572] [2023-12-15 18:10:54,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:10:54,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:10:54,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:10:54,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:10:54,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:10:54,811 INFO L87 Difference]: Start difference. First operand 22020 states and 32514 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:55,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:10:55,001 INFO L93 Difference]: Finished difference Result 33032 states and 48644 transitions. [2023-12-15 18:10:55,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:10:55,001 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 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 30 [2023-12-15 18:10:55,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:10:55,035 INFO L225 Difference]: With dead ends: 33032 [2023-12-15 18:10:55,035 INFO L226 Difference]: Without dead ends: 22278 [2023-12-15 18:10:55,118 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 [2023-12-15 18:10:55,119 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 67 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:10:55,120 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 205 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 18:10:55,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22278 states. [2023-12-15 18:10:55,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22278 to 22276. [2023-12-15 18:10:55,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22276 states, 22275 states have (on average 1.4596632996632997) internal successors, (32514), 22275 states have internal predecessors, (32514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:55,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22276 states to 22276 states and 32514 transitions. [2023-12-15 18:10:55,433 INFO L78 Accepts]: Start accepts. Automaton has 22276 states and 32514 transitions. Word has length 30 [2023-12-15 18:10:55,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:10:55,433 INFO L495 AbstractCegarLoop]: Abstraction has 22276 states and 32514 transitions. [2023-12-15 18:10:55,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:55,433 INFO L276 IsEmpty]: Start isEmpty. Operand 22276 states and 32514 transitions. [2023-12-15 18:10:55,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-12-15 18:10:55,448 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:10:55,448 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] [2023-12-15 18:10:55,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-12-15 18:10:55,448 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:10:55,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:10:55,449 INFO L85 PathProgramCache]: Analyzing trace with hash -545580108, now seen corresponding path program 1 times [2023-12-15 18:10:55,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:10:55,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011135247] [2023-12-15 18:10:55,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:10:55,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:10:55,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:55,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:10:55,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:10:55,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011135247] [2023-12-15 18:10:55,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011135247] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:10:55,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:10:55,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:10:55,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048821161] [2023-12-15 18:10:55,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:10:55,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:10:55,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:10:55,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:10:55,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:10:55,466 INFO L87 Difference]: Start difference. First operand 22276 states and 32514 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:55,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:10:55,836 INFO L93 Difference]: Finished difference Result 38920 states and 58116 transitions. [2023-12-15 18:10:55,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:10:55,836 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 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 30 [2023-12-15 18:10:55,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:10:55,899 INFO L225 Difference]: With dead ends: 38920 [2023-12-15 18:10:55,900 INFO L226 Difference]: Without dead ends: 38918 [2023-12-15 18:10:55,990 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 [2023-12-15 18:10:55,990 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 46 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 166 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 [2023-12-15 18:10:55,991 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 166 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 18:10:56,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38918 states. [2023-12-15 18:10:56,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38918 to 32772. [2023-12-15 18:10:56,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32772 states, 32771 states have (on average 1.4139940801318238) internal successors, (46338), 32771 states have internal predecessors, (46338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:56,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32772 states to 32772 states and 46338 transitions. [2023-12-15 18:10:56,584 INFO L78 Accepts]: Start accepts. Automaton has 32772 states and 46338 transitions. Word has length 30 [2023-12-15 18:10:56,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:10:56,584 INFO L495 AbstractCegarLoop]: Abstraction has 32772 states and 46338 transitions. [2023-12-15 18:10:56,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:56,584 INFO L276 IsEmpty]: Start isEmpty. Operand 32772 states and 46338 transitions. [2023-12-15 18:10:56,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-12-15 18:10:56,606 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:10:56,606 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] [2023-12-15 18:10:56,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-12-15 18:10:56,606 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:10:56,606 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:10:56,606 INFO L85 PathProgramCache]: Analyzing trace with hash 1755242482, now seen corresponding path program 1 times [2023-12-15 18:10:56,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:10:56,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520057740] [2023-12-15 18:10:56,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:10:56,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:10:56,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:56,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:10:56,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:10:56,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520057740] [2023-12-15 18:10:56,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520057740] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:10:56,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:10:56,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:10:56,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516141658] [2023-12-15 18:10:56,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:10:56,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:10:56,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:10:56,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:10:56,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:10:56,625 INFO L87 Difference]: Start difference. First operand 32772 states and 46338 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:57,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:10:57,114 INFO L93 Difference]: Finished difference Result 75784 states and 107780 transitions. [2023-12-15 18:10:57,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:10:57,115 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 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 30 [2023-12-15 18:10:57,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:10:57,166 INFO L225 Difference]: With dead ends: 75784 [2023-12-15 18:10:57,166 INFO L226 Difference]: Without dead ends: 43526 [2023-12-15 18:10:57,198 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 [2023-12-15 18:10:57,198 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 64 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:10:57,198 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 219 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 18:10:57,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43526 states. [2023-12-15 18:10:57,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43526 to 43524. [2023-12-15 18:10:57,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43524 states, 43523 states have (on average 1.411713346965972) internal successors, (61442), 43523 states have internal predecessors, (61442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:58,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43524 states to 43524 states and 61442 transitions. [2023-12-15 18:10:58,045 INFO L78 Accepts]: Start accepts. Automaton has 43524 states and 61442 transitions. Word has length 30 [2023-12-15 18:10:58,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:10:58,046 INFO L495 AbstractCegarLoop]: Abstraction has 43524 states and 61442 transitions. [2023-12-15 18:10:58,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:58,046 INFO L276 IsEmpty]: Start isEmpty. Operand 43524 states and 61442 transitions. [2023-12-15 18:10:58,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-12-15 18:10:58,065 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:10:58,065 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] [2023-12-15 18:10:58,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-12-15 18:10:58,065 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:10:58,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:10:58,065 INFO L85 PathProgramCache]: Analyzing trace with hash 267100633, now seen corresponding path program 1 times [2023-12-15 18:10:58,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:10:58,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671621938] [2023-12-15 18:10:58,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:10:58,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:10:58,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:58,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:10:58,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:10:58,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671621938] [2023-12-15 18:10:58,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671621938] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:10:58,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:10:58,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:10:58,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140690461] [2023-12-15 18:10:58,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:10:58,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:10:58,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:10:58,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:10:58,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:10:58,079 INFO L87 Difference]: Start difference. First operand 43524 states and 61442 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:58,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:10:58,589 INFO L93 Difference]: Finished difference Result 65288 states and 91908 transitions. [2023-12-15 18:10:58,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:10:58,590 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 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 31 [2023-12-15 18:10:58,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:10:58,636 INFO L225 Difference]: With dead ends: 65288 [2023-12-15 18:10:58,637 INFO L226 Difference]: Without dead ends: 44038 [2023-12-15 18:10:58,650 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:10:58,651 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 66 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:10:58,651 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 201 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 18:10:58,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44038 states. [2023-12-15 18:10:59,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44038 to 44036. [2023-12-15 18:10:59,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44036 states, 44035 states have (on average 1.3952991938230952) internal successors, (61442), 44035 states have internal predecessors, (61442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:59,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44036 states to 44036 states and 61442 transitions. [2023-12-15 18:10:59,397 INFO L78 Accepts]: Start accepts. Automaton has 44036 states and 61442 transitions. Word has length 31 [2023-12-15 18:10:59,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:10:59,397 INFO L495 AbstractCegarLoop]: Abstraction has 44036 states and 61442 transitions. [2023-12-15 18:10:59,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:10:59,397 INFO L276 IsEmpty]: Start isEmpty. Operand 44036 states and 61442 transitions. [2023-12-15 18:10:59,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-12-15 18:10:59,417 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:10:59,417 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:10:59,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-12-15 18:10:59,417 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:10:59,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:10:59,417 INFO L85 PathProgramCache]: Analyzing trace with hash -1421843109, now seen corresponding path program 1 times [2023-12-15 18:10:59,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:10:59,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097258555] [2023-12-15 18:10:59,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:10:59,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:10:59,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:10:59,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:10:59,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:10:59,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097258555] [2023-12-15 18:10:59,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097258555] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:10:59,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:10:59,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:10:59,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910960418] [2023-12-15 18:10:59,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:10:59,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:10:59,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:10:59,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:10:59,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:10:59,431 INFO L87 Difference]: Start difference. First operand 44036 states and 61442 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:11:00,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:11:00,267 INFO L93 Difference]: Finished difference Result 129032 states and 178180 transitions. [2023-12-15 18:11:00,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:11:00,268 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 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 31 [2023-12-15 18:11:00,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:11:00,365 INFO L225 Difference]: With dead ends: 129032 [2023-12-15 18:11:00,365 INFO L226 Difference]: Without dead ends: 86022 [2023-12-15 18:11:00,395 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 [2023-12-15 18:11:00,395 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 64 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:11:00,396 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 184 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 18:11:00,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86022 states. [2023-12-15 18:11:01,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86022 to 86020. [2023-12-15 18:11:01,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86020 states, 86019 states have (on average 1.3571187760843535) internal successors, (116738), 86019 states have internal predecessors, (116738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:11:01,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86020 states to 86020 states and 116738 transitions. [2023-12-15 18:11:01,885 INFO L78 Accepts]: Start accepts. Automaton has 86020 states and 116738 transitions. Word has length 31 [2023-12-15 18:11:01,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:11:01,885 INFO L495 AbstractCegarLoop]: Abstraction has 86020 states and 116738 transitions. [2023-12-15 18:11:01,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:11:01,886 INFO L276 IsEmpty]: Start isEmpty. Operand 86020 states and 116738 transitions. [2023-12-15 18:11:01,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-12-15 18:11:01,920 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:11:01,920 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] [2023-12-15 18:11:01,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-12-15 18:11:01,920 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:11:01,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:11:01,921 INFO L85 PathProgramCache]: Analyzing trace with hash 572301597, now seen corresponding path program 1 times [2023-12-15 18:11:01,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:11:01,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143048396] [2023-12-15 18:11:01,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:11:01,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:11:01,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:01,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:11:01,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:11:01,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143048396] [2023-12-15 18:11:01,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143048396] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:11:01,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:11:01,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:11:01,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722553795] [2023-12-15 18:11:01,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:11:01,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:11:01,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:11:01,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:11:01,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:11:01,943 INFO L87 Difference]: Start difference. First operand 86020 states and 116738 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:11:03,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:11:03,127 INFO L93 Difference]: Finished difference Result 96264 states and 135172 transitions. [2023-12-15 18:11:03,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:11:03,128 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 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 31 [2023-12-15 18:11:03,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:11:03,223 INFO L225 Difference]: With dead ends: 96264 [2023-12-15 18:11:03,223 INFO L226 Difference]: Without dead ends: 96262 [2023-12-15 18:11:03,239 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 [2023-12-15 18:11:03,240 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 43 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:11:03,240 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 217 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 18:11:03,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96262 states. [2023-12-15 18:11:04,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96262 to 86020. [2023-12-15 18:11:04,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86020 states, 86019 states have (on average 1.3452144293702555) internal successors, (115714), 86019 states have internal predecessors, (115714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:11:04,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86020 states to 86020 states and 115714 transitions. [2023-12-15 18:11:04,729 INFO L78 Accepts]: Start accepts. Automaton has 86020 states and 115714 transitions. Word has length 31 [2023-12-15 18:11:04,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:11:04,729 INFO L495 AbstractCegarLoop]: Abstraction has 86020 states and 115714 transitions. [2023-12-15 18:11:04,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:11:04,729 INFO L276 IsEmpty]: Start isEmpty. Operand 86020 states and 115714 transitions. [2023-12-15 18:11:04,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-12-15 18:11:04,761 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:11:04,761 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] [2023-12-15 18:11:04,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-12-15 18:11:04,761 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:11:04,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:11:04,761 INFO L85 PathProgramCache]: Analyzing trace with hash -1127248281, now seen corresponding path program 1 times [2023-12-15 18:11:04,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:11:04,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247539210] [2023-12-15 18:11:04,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:11:04,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:11:04,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:04,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:11:04,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:11:04,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247539210] [2023-12-15 18:11:04,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247539210] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:11:04,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:11:04,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:11:04,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388098692] [2023-12-15 18:11:04,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:11:04,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:11:04,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:11:04,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:11:04,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:11:04,778 INFO L87 Difference]: Start difference. First operand 86020 states and 115714 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:11:06,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:11:06,281 INFO L93 Difference]: Finished difference Result 146440 states and 200708 transitions. [2023-12-15 18:11:06,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:11:06,282 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2023-12-15 18:11:06,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:11:06,424 INFO L225 Difference]: With dead ends: 146440 [2023-12-15 18:11:06,424 INFO L226 Difference]: Without dead ends: 146438 [2023-12-15 18:11:06,449 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 [2023-12-15 18:11:06,450 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 40 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 162 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 [2023-12-15 18:11:06,450 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 162 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 18:11:06,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146438 states. [2023-12-15 18:11:08,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146438 to 130052. [2023-12-15 18:11:08,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130052 states, 130051 states have (on average 1.307071841046974) internal successors, (169986), 130051 states have internal predecessors, (169986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:11:08,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130052 states to 130052 states and 169986 transitions. [2023-12-15 18:11:08,571 INFO L78 Accepts]: Start accepts. Automaton has 130052 states and 169986 transitions. Word has length 32 [2023-12-15 18:11:08,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:11:08,571 INFO L495 AbstractCegarLoop]: Abstraction has 130052 states and 169986 transitions. [2023-12-15 18:11:08,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:11:08,571 INFO L276 IsEmpty]: Start isEmpty. Operand 130052 states and 169986 transitions. [2023-12-15 18:11:08,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-12-15 18:11:08,788 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:11:08,788 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] [2023-12-15 18:11:08,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-12-15 18:11:08,788 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:11:08,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:11:08,789 INFO L85 PathProgramCache]: Analyzing trace with hash 1173574309, now seen corresponding path program 1 times [2023-12-15 18:11:08,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:11:08,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822738034] [2023-12-15 18:11:08,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:11:08,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:11:08,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:08,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:11:08,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:11:08,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822738034] [2023-12-15 18:11:08,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822738034] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:11:08,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:11:08,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:11:08,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707166515] [2023-12-15 18:11:08,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:11:08,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:11:08,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:11:08,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:11:08,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:11:08,840 INFO L87 Difference]: Start difference. First operand 130052 states and 169986 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:11:10,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:11:10,634 INFO L93 Difference]: Finished difference Result 297992 states and 391172 transitions. [2023-12-15 18:11:10,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:11:10,643 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2023-12-15 18:11:10,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:11:10,947 INFO L225 Difference]: With dead ends: 297992 [2023-12-15 18:11:10,947 INFO L226 Difference]: Without dead ends: 168966 [2023-12-15 18:11:10,980 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 [2023-12-15 18:11:10,980 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 62 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:11:10,981 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 221 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 18:11:11,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168966 states. [2023-12-15 18:11:13,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168966 to 168964. [2023-12-15 18:11:13,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168964 states, 168963 states have (on average 1.2969585057083504) internal successors, (219138), 168963 states have internal predecessors, (219138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:11:13,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168964 states to 168964 states and 219138 transitions. [2023-12-15 18:11:13,899 INFO L78 Accepts]: Start accepts. Automaton has 168964 states and 219138 transitions. Word has length 32 [2023-12-15 18:11:13,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:11:13,900 INFO L495 AbstractCegarLoop]: Abstraction has 168964 states and 219138 transitions. [2023-12-15 18:11:13,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:11:13,900 INFO L276 IsEmpty]: Start isEmpty. Operand 168964 states and 219138 transitions. [2023-12-15 18:11:13,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-12-15 18:11:13,967 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:11:13,967 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] [2023-12-15 18:11:13,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-12-15 18:11:13,967 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:11:13,967 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:11:13,968 INFO L85 PathProgramCache]: Analyzing trace with hash -584742864, now seen corresponding path program 1 times [2023-12-15 18:11:13,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:11:13,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164862843] [2023-12-15 18:11:13,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:11:13,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:11:13,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:13,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:11:13,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:11:13,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164862843] [2023-12-15 18:11:13,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164862843] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:11:13,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:11:13,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:11:13,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639672655] [2023-12-15 18:11:13,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:11:13,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:11:13,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:11:13,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:11:13,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:11:13,980 INFO L87 Difference]: Start difference. First operand 168964 states and 219138 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:11:15,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:11:15,951 INFO L93 Difference]: Finished difference Result 254984 states and 330756 transitions. [2023-12-15 18:11:15,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:11:15,951 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 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 33 [2023-12-15 18:11:15,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:11:16,120 INFO L225 Difference]: With dead ends: 254984 [2023-12-15 18:11:16,120 INFO L226 Difference]: Without dead ends: 172038 [2023-12-15 18:11:16,166 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 [2023-12-15 18:11:16,167 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 64 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:11:16,167 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 193 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 18:11:16,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172038 states. [2023-12-15 18:11:18,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172038 to 172036. [2023-12-15 18:11:19,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172036 states, 172035 states have (on average 1.2857034905687796) internal successors, (221186), 172035 states have internal predecessors, (221186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:11:19,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172036 states to 172036 states and 221186 transitions. [2023-12-15 18:11:19,341 INFO L78 Accepts]: Start accepts. Automaton has 172036 states and 221186 transitions. Word has length 33 [2023-12-15 18:11:19,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:11:19,341 INFO L495 AbstractCegarLoop]: Abstraction has 172036 states and 221186 transitions. [2023-12-15 18:11:19,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:11:19,341 INFO L276 IsEmpty]: Start isEmpty. Operand 172036 states and 221186 transitions. [2023-12-15 18:11:19,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-12-15 18:11:19,591 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:11:19,591 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:11:19,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-12-15 18:11:19,591 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:11:19,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:11:19,591 INFO L85 PathProgramCache]: Analyzing trace with hash 2021280690, now seen corresponding path program 1 times [2023-12-15 18:11:19,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:11:19,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380531710] [2023-12-15 18:11:19,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:11:19,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:11:19,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:19,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:11:19,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:11:19,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380531710] [2023-12-15 18:11:19,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380531710] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:11:19,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:11:19,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:11:19,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542853778] [2023-12-15 18:11:19,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:11:19,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:11:19,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:11:19,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:11:19,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:11:19,604 INFO L87 Difference]: Start difference. First operand 172036 states and 221186 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:11:22,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:11:22,339 INFO L93 Difference]: Finished difference Result 286728 states and 372740 transitions. [2023-12-15 18:11:22,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:11:22,339 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 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 33 [2023-12-15 18:11:22,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:11:22,710 INFO L225 Difference]: With dead ends: 286728 [2023-12-15 18:11:22,710 INFO L226 Difference]: Without dead ends: 286726 [2023-12-15 18:11:22,757 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:11:22,757 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 37 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 160 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 [2023-12-15 18:11:22,757 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 160 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 18:11:22,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286726 states. [2023-12-15 18:11:26,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286726 to 262148. [2023-12-15 18:11:26,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262148 states, 262147 states have (on average 1.2499933243561818) internal successors, (327682), 262147 states have internal predecessors, (327682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:11:27,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262148 states to 262148 states and 327682 transitions. [2023-12-15 18:11:27,107 INFO L78 Accepts]: Start accepts. Automaton has 262148 states and 327682 transitions. Word has length 33 [2023-12-15 18:11:27,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 18:11:27,107 INFO L495 AbstractCegarLoop]: Abstraction has 262148 states and 327682 transitions. [2023-12-15 18:11:27,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:11:27,107 INFO L276 IsEmpty]: Start isEmpty. Operand 262148 states and 327682 transitions. [2023-12-15 18:11:27,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-12-15 18:11:27,276 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 18:11:27,276 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 18:11:27,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-12-15 18:11:27,276 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 18:11:27,276 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 18:11:27,276 INFO L85 PathProgramCache]: Analyzing trace with hash 27135984, now seen corresponding path program 1 times [2023-12-15 18:11:27,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 18:11:27,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263696317] [2023-12-15 18:11:27,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 18:11:27,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 18:11:27,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 18:11:27,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 18:11:27,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 18:11:27,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263696317] [2023-12-15 18:11:27,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263696317] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 18:11:27,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 18:11:27,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 18:11:27,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442738890] [2023-12-15 18:11:27,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 18:11:27,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 18:11:27,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 18:11:27,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 18:11:27,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 18:11:27,296 INFO L87 Difference]: Start difference. First operand 262148 states and 327682 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 18:11:31,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 18:11:31,207 INFO L93 Difference]: Finished difference Result 593928 states and 741380 transitions. [2023-12-15 18:11:31,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 18:11:31,208 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 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 33 [2023-12-15 18:11:31,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 18:11:31,951 INFO L225 Difference]: With dead ends: 593928 [2023-12-15 18:11:31,951 INFO L226 Difference]: Without dead ends: 335878 [2023-12-15 18:11:32,074 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 [2023-12-15 18:11:32,097 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 61 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 18:11:32,099 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 222 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 18:11:32,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335878 states.