/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-15 23:41:40,030 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-15 23:41:40,099 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 23:41:40,103 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-15 23:41:40,104 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-15 23:41:40,117 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-15 23:41:40,117 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-15 23:41:40,117 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-15 23:41:40,118 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-15 23:41:40,118 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-15 23:41:40,118 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-15 23:41:40,119 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-15 23:41:40,119 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-15 23:41:40,119 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-15 23:41:40,119 INFO L153 SettingsManager]: * Use SBE=true [2023-12-15 23:41:40,120 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-15 23:41:40,120 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-15 23:41:40,120 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-15 23:41:40,120 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-15 23:41:40,121 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-15 23:41:40,121 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-15 23:41:40,121 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-15 23:41:40,121 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-15 23:41:40,122 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-15 23:41:40,122 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-15 23:41:40,122 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-15 23:41:40,122 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-15 23:41:40,122 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-15 23:41:40,123 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-15 23:41:40,123 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-15 23:41:40,123 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-15 23:41:40,123 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-15 23:41:40,123 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 23:41:40,123 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-15 23:41:40,124 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-15 23:41:40,124 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-15 23:41:40,124 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-15 23:41:40,124 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-15 23:41:40,124 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-15 23:41:40,124 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-15 23:41:40,125 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-15 23:41:40,125 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-15 23:41:40,125 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-15 23:41:40,125 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-15 23:41:40,297 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-15 23:41:40,325 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-15 23:41:40,327 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-15 23:41:40,328 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-15 23:41:40,329 INFO L274 PluginConnector]: CDTParser initialized [2023-12-15 23:41:40,330 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2023-12-15 23:41:41,437 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-15 23:41:41,638 INFO L384 CDTParser]: Found 1 translation units. [2023-12-15 23:41:41,638 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2023-12-15 23:41:41,650 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b37534a0e/260253cda6bc4f26ae7ec127c68c4288/FLAGccf4b0793 [2023-12-15 23:41:41,659 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b37534a0e/260253cda6bc4f26ae7ec127c68c4288 [2023-12-15 23:41:41,661 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-15 23:41:41,662 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-15 23:41:41,663 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-15 23:41:41,663 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-15 23:41:41,666 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-15 23:41:41,667 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:41:41" (1/1) ... [2023-12-15 23:41:41,667 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6171024c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:41:41, skipping insertion in model container [2023-12-15 23:41:41,667 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:41:41" (1/1) ... [2023-12-15 23:41:41,707 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-15 23:41:41,898 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c[15968,15981] [2023-12-15 23:41:41,958 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 23:41:41,968 INFO L202 MainTranslator]: Completed pre-run [2023-12-15 23:41:42,057 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c[15968,15981] [2023-12-15 23:41:42,092 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-15 23:41:42,104 INFO L206 MainTranslator]: Completed translation [2023-12-15 23:41:42,104 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:41:42 WrapperNode [2023-12-15 23:41:42,104 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-15 23:41:42,105 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-15 23:41:42,105 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-15 23:41:42,105 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-15 23:41:42,110 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:41:42" (1/1) ... [2023-12-15 23:41:42,150 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:41:42" (1/1) ... [2023-12-15 23:41:42,223 INFO L138 Inliner]: procedures = 22, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1370 [2023-12-15 23:41:42,224 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-15 23:41:42,224 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-15 23:41:42,224 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-15 23:41:42,224 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-15 23:41:42,240 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:41:42" (1/1) ... [2023-12-15 23:41:42,241 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:41:42" (1/1) ... [2023-12-15 23:41:42,248 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:41:42" (1/1) ... [2023-12-15 23:41:42,277 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 23:41:42,278 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:41:42" (1/1) ... [2023-12-15 23:41:42,278 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:41:42" (1/1) ... [2023-12-15 23:41:42,305 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:41:42" (1/1) ... [2023-12-15 23:41:42,311 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:41:42" (1/1) ... [2023-12-15 23:41:42,313 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:41:42" (1/1) ... [2023-12-15 23:41:42,316 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:41:42" (1/1) ... [2023-12-15 23:41:42,337 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-15 23:41:42,337 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-15 23:41:42,337 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-15 23:41:42,338 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-15 23:41:42,338 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:41:42" (1/1) ... [2023-12-15 23:41:42,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-15 23:41:42,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-15 23:41:42,363 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 23:41:42,377 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 23:41:42,405 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-15 23:41:42,406 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-15 23:41:42,406 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-15 23:41:42,406 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-15 23:41:42,506 INFO L241 CfgBuilder]: Building ICFG [2023-12-15 23:41:42,508 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-15 23:41:43,328 INFO L282 CfgBuilder]: Performing block encoding [2023-12-15 23:41:43,356 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-15 23:41:43,356 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-15 23:41:43,357 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:41:43 BoogieIcfgContainer [2023-12-15 23:41:43,357 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-15 23:41:43,358 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-15 23:41:43,358 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-15 23:41:43,360 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-15 23:41:43,360 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 11:41:41" (1/3) ... [2023-12-15 23:41:43,361 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ac2903c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:41:43, skipping insertion in model container [2023-12-15 23:41:43,361 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:41:42" (2/3) ... [2023-12-15 23:41:43,361 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ac2903c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:41:43, skipping insertion in model container [2023-12-15 23:41:43,361 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:41:43" (3/3) ... [2023-12-15 23:41:43,362 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2023-12-15 23:41:43,373 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-15 23:41:43,374 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-15 23:41:43,408 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-15 23:41:43,412 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;@3e0aaf11, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-15 23:41:43,412 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-15 23:41:43,417 INFO L276 IsEmpty]: Start isEmpty. Operand has 335 states, 333 states have (on average 1.7777777777777777) internal successors, (592), 334 states have internal predecessors, (592), 0 states have call successors, (0), 0 states 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 23:41:43,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-15 23:41:43,427 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:41:43,428 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:41:43,428 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:41:43,431 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:41:43,432 INFO L85 PathProgramCache]: Analyzing trace with hash 1082782656, now seen corresponding path program 1 times [2023-12-15 23:41:43,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:41:43,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108979945] [2023-12-15 23:41:43,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:41:43,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:41:43,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:41:43,837 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 23:41:43,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:41:43,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108979945] [2023-12-15 23:41:43,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108979945] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:41:43,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:41:43,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:41:43,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451194641] [2023-12-15 23:41:43,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:41:43,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:41:43,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:41:43,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:41:43,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:41:43,866 INFO L87 Difference]: Start difference. First operand has 335 states, 333 states have (on average 1.7777777777777777) internal successors, (592), 334 states have internal predecessors, (592), 0 states have call successors, (0), 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 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:41:44,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:41:44,007 INFO L93 Difference]: Finished difference Result 660 states and 1152 transitions. [2023-12-15 23:41:44,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:41:44,014 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 152 [2023-12-15 23:41:44,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:41:44,024 INFO L225 Difference]: With dead ends: 660 [2023-12-15 23:41:44,024 INFO L226 Difference]: Without dead ends: 542 [2023-12-15 23:41:44,026 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 23:41:44,035 INFO L413 NwaCegarLoop]: 557 mSDtfsCounter, 398 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 398 SdHoareTripleChecker+Valid, 964 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 23:41:44,037 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [398 Valid, 964 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 23:41:44,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2023-12-15 23:41:44,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 540. [2023-12-15 23:41:44,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 540 states, 539 states have (on average 1.5009276437847867) internal successors, (809), 539 states have internal predecessors, (809), 0 states have call successors, (0), 0 states 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 23:41:44,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 540 states to 540 states and 809 transitions. [2023-12-15 23:41:44,085 INFO L78 Accepts]: Start accepts. Automaton has 540 states and 809 transitions. Word has length 152 [2023-12-15 23:41:44,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:41:44,086 INFO L495 AbstractCegarLoop]: Abstraction has 540 states and 809 transitions. [2023-12-15 23:41:44,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:41:44,087 INFO L276 IsEmpty]: Start isEmpty. Operand 540 states and 809 transitions. [2023-12-15 23:41:44,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-15 23:41:44,089 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:41:44,089 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:41:44,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-15 23:41:44,090 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:41:44,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:41:44,090 INFO L85 PathProgramCache]: Analyzing trace with hash 704960955, now seen corresponding path program 1 times [2023-12-15 23:41:44,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:41:44,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863788793] [2023-12-15 23:41:44,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:41:44,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:41:44,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:41:44,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:41:44,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:41:44,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863788793] [2023-12-15 23:41:44,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863788793] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:41:44,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:41:44,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:41:44,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070614150] [2023-12-15 23:41:44,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:41:44,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 23:41:44,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:41:44,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 23:41:44,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 23:41:44,545 INFO L87 Difference]: Start difference. First operand 540 states and 809 transitions. Second operand has 4 states, 4 states have (on average 38.0) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:41:44,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:41:44,607 INFO L93 Difference]: Finished difference Result 1575 states and 2350 transitions. [2023-12-15 23:41:44,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 23:41:44,608 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 152 [2023-12-15 23:41:44,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:41:44,613 INFO L225 Difference]: With dead ends: 1575 [2023-12-15 23:41:44,613 INFO L226 Difference]: Without dead ends: 1043 [2023-12-15 23:41:44,617 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 23:41:44,618 INFO L413 NwaCegarLoop]: 765 mSDtfsCounter, 1068 mSDsluCounter, 441 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1068 SdHoareTripleChecker+Valid, 1206 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:41:44,619 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1068 Valid, 1206 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:41:44,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1043 states. [2023-12-15 23:41:44,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1043 to 1041. [2023-12-15 23:41:44,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1041 states, 1040 states have (on average 1.4826923076923078) internal successors, (1542), 1040 states have internal predecessors, (1542), 0 states have call successors, (0), 0 states 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 23:41:44,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1041 states to 1041 states and 1542 transitions. [2023-12-15 23:41:44,654 INFO L78 Accepts]: Start accepts. Automaton has 1041 states and 1542 transitions. Word has length 152 [2023-12-15 23:41:44,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:41:44,656 INFO L495 AbstractCegarLoop]: Abstraction has 1041 states and 1542 transitions. [2023-12-15 23:41:44,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:41:44,657 INFO L276 IsEmpty]: Start isEmpty. Operand 1041 states and 1542 transitions. [2023-12-15 23:41:44,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-12-15 23:41:44,661 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:41:44,661 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:41:44,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-15 23:41:44,661 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:41:44,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:41:44,662 INFO L85 PathProgramCache]: Analyzing trace with hash -2079044485, now seen corresponding path program 1 times [2023-12-15 23:41:44,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:41:44,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60503323] [2023-12-15 23:41:44,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:41:44,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:41:44,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:41:44,734 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 23:41:44,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:41:44,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60503323] [2023-12-15 23:41:44,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60503323] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:41:44,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:41:44,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:41:44,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579758189] [2023-12-15 23:41:44,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:41:44,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:41:44,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:41:44,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:41:44,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:41:44,739 INFO L87 Difference]: Start difference. First operand 1041 states and 1542 transitions. Second operand has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:41:44,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:41:44,765 INFO L93 Difference]: Finished difference Result 3087 states and 4566 transitions. [2023-12-15 23:41:44,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:41:44,766 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 153 [2023-12-15 23:41:44,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:41:44,772 INFO L225 Difference]: With dead ends: 3087 [2023-12-15 23:41:44,772 INFO L226 Difference]: Without dead ends: 2073 [2023-12-15 23:41:44,774 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 23:41:44,777 INFO L413 NwaCegarLoop]: 970 mSDtfsCounter, 482 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 482 SdHoareTripleChecker+Valid, 1453 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:41:44,778 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [482 Valid, 1453 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:41:44,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2073 states. [2023-12-15 23:41:44,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2073 to 1043. [2023-12-15 23:41:44,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1043 states, 1042 states have (on average 1.4817658349328215) internal successors, (1544), 1042 states have internal predecessors, (1544), 0 states have call successors, (0), 0 states 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 23:41:44,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1043 states to 1043 states and 1544 transitions. [2023-12-15 23:41:44,804 INFO L78 Accepts]: Start accepts. Automaton has 1043 states and 1544 transitions. Word has length 153 [2023-12-15 23:41:44,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:41:44,807 INFO L495 AbstractCegarLoop]: Abstraction has 1043 states and 1544 transitions. [2023-12-15 23:41:44,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:41:44,811 INFO L276 IsEmpty]: Start isEmpty. Operand 1043 states and 1544 transitions. [2023-12-15 23:41:44,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-12-15 23:41:44,812 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:41:44,813 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:41:44,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-15 23:41:44,813 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:41:44,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:41:44,813 INFO L85 PathProgramCache]: Analyzing trace with hash 204714344, now seen corresponding path program 1 times [2023-12-15 23:41:44,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:41:44,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147980316] [2023-12-15 23:41:44,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:41:44,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:41:44,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:41:44,896 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 23:41:44,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:41:44,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147980316] [2023-12-15 23:41:44,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147980316] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:41:44,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:41:44,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:41:44,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115226400] [2023-12-15 23:41:44,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:41:44,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:41:44,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:41:44,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:41:44,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:41:44,898 INFO L87 Difference]: Start difference. First operand 1043 states and 1544 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:41:44,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:41:44,937 INFO L93 Difference]: Finished difference Result 2684 states and 3974 transitions. [2023-12-15 23:41:44,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:41:44,937 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 154 [2023-12-15 23:41:44,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:41:44,943 INFO L225 Difference]: With dead ends: 2684 [2023-12-15 23:41:44,943 INFO L226 Difference]: Without dead ends: 1835 [2023-12-15 23:41:44,944 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 23:41:44,949 INFO L413 NwaCegarLoop]: 931 mSDtfsCounter, 417 mSDsluCounter, 447 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 417 SdHoareTripleChecker+Valid, 1378 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:41:44,949 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [417 Valid, 1378 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:41:44,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1835 states. [2023-12-15 23:41:44,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1835 to 1833. [2023-12-15 23:41:44,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1833 states, 1832 states have (on average 1.460698689956332) internal successors, (2676), 1832 states have internal predecessors, (2676), 0 states have call successors, (0), 0 states 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 23:41:44,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1833 states to 1833 states and 2676 transitions. [2023-12-15 23:41:44,979 INFO L78 Accepts]: Start accepts. Automaton has 1833 states and 2676 transitions. Word has length 154 [2023-12-15 23:41:44,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:41:44,981 INFO L495 AbstractCegarLoop]: Abstraction has 1833 states and 2676 transitions. [2023-12-15 23:41:44,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:41:44,982 INFO L276 IsEmpty]: Start isEmpty. Operand 1833 states and 2676 transitions. [2023-12-15 23:41:44,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-12-15 23:41:44,984 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:41:44,984 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:41:44,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-15 23:41:44,984 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:41:44,984 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:41:44,984 INFO L85 PathProgramCache]: Analyzing trace with hash -1920381653, now seen corresponding path program 1 times [2023-12-15 23:41:44,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:41:44,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079145226] [2023-12-15 23:41:44,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:41:44,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:41:45,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:41:45,288 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 23:41:45,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:41:45,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079145226] [2023-12-15 23:41:45,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079145226] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:41:45,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:41:45,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 23:41:45,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71003129] [2023-12-15 23:41:45,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:41:45,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 23:41:45,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:41:45,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 23:41:45,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 23:41:45,291 INFO L87 Difference]: Start difference. First operand 1833 states and 2676 transitions. Second operand has 5 states, 5 states have (on average 30.8) internal successors, (154), 4 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:41:45,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:41:45,374 INFO L93 Difference]: Finished difference Result 5179 states and 7551 transitions. [2023-12-15 23:41:45,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 23:41:45,375 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.8) internal successors, (154), 4 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 154 [2023-12-15 23:41:45,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:41:45,383 INFO L225 Difference]: With dead ends: 5179 [2023-12-15 23:41:45,383 INFO L226 Difference]: Without dead ends: 3359 [2023-12-15 23:41:45,387 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 23:41:45,387 INFO L413 NwaCegarLoop]: 763 mSDtfsCounter, 1102 mSDsluCounter, 882 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1102 SdHoareTripleChecker+Valid, 1645 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 23:41:45,388 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1102 Valid, 1645 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 23:41:45,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3359 states. [2023-12-15 23:41:45,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3359 to 3357. [2023-12-15 23:41:45,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3357 states, 3356 states have (on average 1.4448748510131109) internal successors, (4849), 3356 states have internal predecessors, (4849), 0 states have call successors, (0), 0 states 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 23:41:45,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3357 states to 3357 states and 4849 transitions. [2023-12-15 23:41:45,457 INFO L78 Accepts]: Start accepts. Automaton has 3357 states and 4849 transitions. Word has length 154 [2023-12-15 23:41:45,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:41:45,458 INFO L495 AbstractCegarLoop]: Abstraction has 3357 states and 4849 transitions. [2023-12-15 23:41:45,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.8) internal successors, (154), 4 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:41:45,459 INFO L276 IsEmpty]: Start isEmpty. Operand 3357 states and 4849 transitions. [2023-12-15 23:41:45,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-12-15 23:41:45,463 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:41:45,463 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:41:45,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-15 23:41:45,464 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:41:45,465 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:41:45,465 INFO L85 PathProgramCache]: Analyzing trace with hash 221481114, now seen corresponding path program 1 times [2023-12-15 23:41:45,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:41:45,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318117662] [2023-12-15 23:41:45,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:41:45,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:41:45,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:41:45,687 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 23:41:45,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:41:45,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318117662] [2023-12-15 23:41:45,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318117662] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:41:45,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:41:45,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:41:45,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869172909] [2023-12-15 23:41:45,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:41:45,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 23:41:45,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:41:45,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 23:41:45,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 23:41:45,689 INFO L87 Difference]: Start difference. First operand 3357 states and 4849 transitions. Second operand has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:41:45,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:41:45,776 INFO L93 Difference]: Finished difference Result 9770 states and 14052 transitions. [2023-12-15 23:41:45,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 23:41:45,777 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 154 [2023-12-15 23:41:45,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:41:45,793 INFO L225 Difference]: With dead ends: 9770 [2023-12-15 23:41:45,793 INFO L226 Difference]: Without dead ends: 6468 [2023-12-15 23:41:45,798 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 23:41:45,811 INFO L413 NwaCegarLoop]: 823 mSDtfsCounter, 973 mSDsluCounter, 441 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 973 SdHoareTripleChecker+Valid, 1264 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:41:45,811 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [973 Valid, 1264 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:41:45,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6468 states. [2023-12-15 23:41:45,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6468 to 6466. [2023-12-15 23:41:45,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6466 states, 6465 states have (on average 1.4245939675174013) internal successors, (9210), 6465 states have internal predecessors, (9210), 0 states have call successors, (0), 0 states 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 23:41:45,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6466 states to 6466 states and 9210 transitions. [2023-12-15 23:41:45,937 INFO L78 Accepts]: Start accepts. Automaton has 6466 states and 9210 transitions. Word has length 154 [2023-12-15 23:41:45,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:41:45,938 INFO L495 AbstractCegarLoop]: Abstraction has 6466 states and 9210 transitions. [2023-12-15 23:41:45,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:41:45,938 INFO L276 IsEmpty]: Start isEmpty. Operand 6466 states and 9210 transitions. [2023-12-15 23:41:45,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-12-15 23:41:45,945 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:41:45,945 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:41:45,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-15 23:41:45,945 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:41:45,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:41:45,948 INFO L85 PathProgramCache]: Analyzing trace with hash -2036415750, now seen corresponding path program 1 times [2023-12-15 23:41:45,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:41:45,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302894821] [2023-12-15 23:41:45,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:41:45,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:41:45,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:41:45,996 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 23:41:45,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:41:45,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302894821] [2023-12-15 23:41:45,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302894821] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:41:45,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:41:45,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:41:45,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130013826] [2023-12-15 23:41:45,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:41:45,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:41:45,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:41:45,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:41:45,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:41:45,997 INFO L87 Difference]: Start difference. First operand 6466 states and 9210 transitions. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:41:46,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:41:46,098 INFO L93 Difference]: Finished difference Result 19248 states and 27399 transitions. [2023-12-15 23:41:46,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:41:46,098 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 155 [2023-12-15 23:41:46,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:41:46,141 INFO L225 Difference]: With dead ends: 19248 [2023-12-15 23:41:46,141 INFO L226 Difference]: Without dead ends: 12872 [2023-12-15 23:41:46,150 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 23:41:46,151 INFO L413 NwaCegarLoop]: 622 mSDtfsCounter, 468 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 468 SdHoareTripleChecker+Valid, 1105 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:41:46,151 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [468 Valid, 1105 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:41:46,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12872 states. [2023-12-15 23:41:46,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12872 to 6476. [2023-12-15 23:41:46,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6476 states, 6475 states have (on average 1.423938223938224) internal successors, (9220), 6475 states have internal predecessors, (9220), 0 states have call successors, (0), 0 states 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 23:41:46,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6476 states to 6476 states and 9220 transitions. [2023-12-15 23:41:46,324 INFO L78 Accepts]: Start accepts. Automaton has 6476 states and 9220 transitions. Word has length 155 [2023-12-15 23:41:46,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:41:46,324 INFO L495 AbstractCegarLoop]: Abstraction has 6476 states and 9220 transitions. [2023-12-15 23:41:46,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:41:46,324 INFO L276 IsEmpty]: Start isEmpty. Operand 6476 states and 9220 transitions. [2023-12-15 23:41:46,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2023-12-15 23:41:46,331 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:41:46,331 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:41:46,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-15 23:41:46,332 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:41:46,332 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:41:46,332 INFO L85 PathProgramCache]: Analyzing trace with hash 443568889, now seen corresponding path program 1 times [2023-12-15 23:41:46,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:41:46,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086165352] [2023-12-15 23:41:46,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:41:46,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:41:46,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:41:46,520 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 23:41:46,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:41:46,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086165352] [2023-12-15 23:41:46,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086165352] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:41:46,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:41:46,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:41:46,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297309606] [2023-12-15 23:41:46,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:41:46,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 23:41:46,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:41:46,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 23:41:46,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 23:41:46,522 INFO L87 Difference]: Start difference. First operand 6476 states and 9220 transitions. Second operand has 4 states, 4 states have (on average 39.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states 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 23:41:46,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:41:46,634 INFO L93 Difference]: Finished difference Result 18754 states and 26615 transitions. [2023-12-15 23:41:46,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 23:41:46,635 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 156 [2023-12-15 23:41:46,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:41:46,656 INFO L225 Difference]: With dead ends: 18754 [2023-12-15 23:41:46,657 INFO L226 Difference]: Without dead ends: 12378 [2023-12-15 23:41:46,666 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 23:41:46,668 INFO L413 NwaCegarLoop]: 780 mSDtfsCounter, 1001 mSDsluCounter, 441 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1001 SdHoareTripleChecker+Valid, 1221 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:41:46,668 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1001 Valid, 1221 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:41:46,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12378 states. [2023-12-15 23:41:46,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12378 to 12376. [2023-12-15 23:41:46,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12376 states, 12375 states have (on average 1.4046060606060606) internal successors, (17382), 12375 states have internal predecessors, (17382), 0 states have call successors, (0), 0 states 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 23:41:46,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12376 states to 12376 states and 17382 transitions. [2023-12-15 23:41:46,933 INFO L78 Accepts]: Start accepts. Automaton has 12376 states and 17382 transitions. Word has length 156 [2023-12-15 23:41:46,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:41:46,933 INFO L495 AbstractCegarLoop]: Abstraction has 12376 states and 17382 transitions. [2023-12-15 23:41:46,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states 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 23:41:46,934 INFO L276 IsEmpty]: Start isEmpty. Operand 12376 states and 17382 transitions. [2023-12-15 23:41:46,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-12-15 23:41:46,947 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:41:46,947 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:41:46,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-15 23:41:46,948 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:41:46,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:41:46,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1612399367, now seen corresponding path program 1 times [2023-12-15 23:41:46,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:41:46,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310822314] [2023-12-15 23:41:46,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:41:46,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:41:46,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:41:47,000 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 23:41:47,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:41:47,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310822314] [2023-12-15 23:41:47,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310822314] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:41:47,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:41:47,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:41:47,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021269479] [2023-12-15 23:41:47,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:41:47,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:41:47,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:41:47,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:41:47,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:41:47,002 INFO L87 Difference]: Start difference. First operand 12376 states and 17382 transitions. Second operand has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 0 states have call successors, (0), 0 states 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 23:41:47,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:41:47,113 INFO L93 Difference]: Finished difference Result 35904 states and 50586 transitions. [2023-12-15 23:41:47,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:41:47,113 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 157 [2023-12-15 23:41:47,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:41:47,149 INFO L225 Difference]: With dead ends: 35904 [2023-12-15 23:41:47,149 INFO L226 Difference]: Without dead ends: 24470 [2023-12-15 23:41:47,167 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:41:47,169 INFO L413 NwaCegarLoop]: 706 mSDtfsCounter, 454 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 454 SdHoareTripleChecker+Valid, 1189 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:41:47,169 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [454 Valid, 1189 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:41:47,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24470 states. [2023-12-15 23:41:47,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24470 to 12396. [2023-12-15 23:41:47,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12396 states, 12395 states have (on average 1.4039532069382816) internal successors, (17402), 12395 states have internal predecessors, (17402), 0 states have call successors, (0), 0 states 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 23:41:47,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12396 states to 12396 states and 17402 transitions. [2023-12-15 23:41:47,523 INFO L78 Accepts]: Start accepts. Automaton has 12396 states and 17402 transitions. Word has length 157 [2023-12-15 23:41:47,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:41:47,523 INFO L495 AbstractCegarLoop]: Abstraction has 12396 states and 17402 transitions. [2023-12-15 23:41:47,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 0 states have call successors, (0), 0 states 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 23:41:47,523 INFO L276 IsEmpty]: Start isEmpty. Operand 12396 states and 17402 transitions. [2023-12-15 23:41:47,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2023-12-15 23:41:47,536 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:41:47,536 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:41:47,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-15 23:41:47,536 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:41:47,537 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:41:47,537 INFO L85 PathProgramCache]: Analyzing trace with hash -23594792, now seen corresponding path program 1 times [2023-12-15 23:41:47,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:41:47,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044928167] [2023-12-15 23:41:47,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:41:47,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:41:47,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:41:47,720 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 23:41:47,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:41:47,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044928167] [2023-12-15 23:41:47,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044928167] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:41:47,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:41:47,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 23:41:47,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914265756] [2023-12-15 23:41:47,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:41:47,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 23:41:47,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:41:47,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 23:41:47,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 23:41:47,722 INFO L87 Difference]: Start difference. First operand 12396 states and 17402 transitions. Second operand has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 0 states have call successors, (0), 0 states 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 23:41:47,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:41:47,902 INFO L93 Difference]: Finished difference Result 20717 states and 29193 transitions. [2023-12-15 23:41:47,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 23:41:47,903 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 158 [2023-12-15 23:41:47,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:41:47,914 INFO L225 Difference]: With dead ends: 20717 [2023-12-15 23:41:47,914 INFO L226 Difference]: Without dead ends: 8889 [2023-12-15 23:41:47,922 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 23:41:47,922 INFO L413 NwaCegarLoop]: 534 mSDtfsCounter, 65 mSDsluCounter, 973 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 1507 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:41:47,923 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 1507 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:41:47,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8889 states. [2023-12-15 23:41:48,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8889 to 8889. [2023-12-15 23:41:48,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8889 states, 8888 states have (on average 1.4063906390639065) internal successors, (12500), 8888 states have internal predecessors, (12500), 0 states have call successors, (0), 0 states 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 23:41:48,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8889 states to 8889 states and 12500 transitions. [2023-12-15 23:41:48,057 INFO L78 Accepts]: Start accepts. Automaton has 8889 states and 12500 transitions. Word has length 158 [2023-12-15 23:41:48,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:41:48,057 INFO L495 AbstractCegarLoop]: Abstraction has 8889 states and 12500 transitions. [2023-12-15 23:41:48,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 0 states have call successors, (0), 0 states 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 23:41:48,057 INFO L276 IsEmpty]: Start isEmpty. Operand 8889 states and 12500 transitions. [2023-12-15 23:41:48,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-15 23:41:48,066 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:41:48,066 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:41:48,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-15 23:41:48,067 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:41:48,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:41:48,067 INFO L85 PathProgramCache]: Analyzing trace with hash 2115835798, now seen corresponding path program 1 times [2023-12-15 23:41:48,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:41:48,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712083064] [2023-12-15 23:41:48,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:41:48,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:41:48,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:41:48,121 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 23:41:48,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:41:48,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712083064] [2023-12-15 23:41:48,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712083064] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:41:48,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:41:48,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:41:48,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523597756] [2023-12-15 23:41:48,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:41:48,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:41:48,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:41:48,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:41:48,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:41:48,123 INFO L87 Difference]: Start difference. First operand 8889 states and 12500 transitions. Second operand has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:41:48,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:41:48,222 INFO L93 Difference]: Finished difference Result 21425 states and 30718 transitions. [2023-12-15 23:41:48,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:41:48,222 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 162 [2023-12-15 23:41:48,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:41:48,243 INFO L225 Difference]: With dead ends: 21425 [2023-12-15 23:41:48,243 INFO L226 Difference]: Without dead ends: 13275 [2023-12-15 23:41:48,255 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 23:41:48,256 INFO L413 NwaCegarLoop]: 684 mSDtfsCounter, 307 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 1042 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:41:48,256 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [307 Valid, 1042 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:41:48,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13275 states. [2023-12-15 23:41:48,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13275 to 11473. [2023-12-15 23:41:48,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11473 states, 11472 states have (on average 1.4476987447698744) internal successors, (16608), 11472 states have internal predecessors, (16608), 0 states have call successors, (0), 0 states 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 23:41:48,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11473 states to 11473 states and 16608 transitions. [2023-12-15 23:41:48,467 INFO L78 Accepts]: Start accepts. Automaton has 11473 states and 16608 transitions. Word has length 162 [2023-12-15 23:41:48,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:41:48,467 INFO L495 AbstractCegarLoop]: Abstraction has 11473 states and 16608 transitions. [2023-12-15 23:41:48,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:41:48,467 INFO L276 IsEmpty]: Start isEmpty. Operand 11473 states and 16608 transitions. [2023-12-15 23:41:48,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2023-12-15 23:41:48,476 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:41:48,476 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:41:48,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-15 23:41:48,477 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:41:48,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:41:48,477 INFO L85 PathProgramCache]: Analyzing trace with hash -2040890679, now seen corresponding path program 1 times [2023-12-15 23:41:48,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:41:48,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856386966] [2023-12-15 23:41:48,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:41:48,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:41:48,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:41:48,557 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 23:41:48,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:41:48,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856386966] [2023-12-15 23:41:48,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856386966] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:41:48,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:41:48,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:41:48,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707305486] [2023-12-15 23:41:48,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:41:48,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:41:48,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:41:48,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:41:48,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:41:48,559 INFO L87 Difference]: Start difference. First operand 11473 states and 16608 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:41:48,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:41:48,684 INFO L93 Difference]: Finished difference Result 31843 states and 46302 transitions. [2023-12-15 23:41:48,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:41:48,685 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 165 [2023-12-15 23:41:48,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:41:48,721 INFO L225 Difference]: With dead ends: 31843 [2023-12-15 23:41:48,721 INFO L226 Difference]: Without dead ends: 21589 [2023-12-15 23:41:48,740 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 23:41:48,741 INFO L413 NwaCegarLoop]: 902 mSDtfsCounter, 406 mSDsluCounter, 442 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 406 SdHoareTripleChecker+Valid, 1344 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:41:48,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [406 Valid, 1344 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:41:48,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21589 states. [2023-12-15 23:41:49,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21589 to 21587. [2023-12-15 23:41:49,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21587 states, 21586 states have (on average 1.4318539794311127) internal successors, (30908), 21586 states have internal predecessors, (30908), 0 states have call successors, (0), 0 states 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 23:41:49,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21587 states to 21587 states and 30908 transitions. [2023-12-15 23:41:49,060 INFO L78 Accepts]: Start accepts. Automaton has 21587 states and 30908 transitions. Word has length 165 [2023-12-15 23:41:49,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:41:49,060 INFO L495 AbstractCegarLoop]: Abstraction has 21587 states and 30908 transitions. [2023-12-15 23:41:49,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:41:49,060 INFO L276 IsEmpty]: Start isEmpty. Operand 21587 states and 30908 transitions. [2023-12-15 23:41:49,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2023-12-15 23:41:49,076 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:41:49,076 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:41:49,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-15 23:41:49,076 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:41:49,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:41:49,077 INFO L85 PathProgramCache]: Analyzing trace with hash 1075079782, now seen corresponding path program 1 times [2023-12-15 23:41:49,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:41:49,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571550382] [2023-12-15 23:41:49,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:41:49,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:41:49,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:41:49,200 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 23:41:49,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:41:49,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571550382] [2023-12-15 23:41:49,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571550382] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:41:49,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:41:49,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 23:41:49,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685951186] [2023-12-15 23:41:49,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:41:49,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 23:41:49,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:41:49,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 23:41:49,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-15 23:41:49,202 INFO L87 Difference]: Start difference. First operand 21587 states and 30908 transitions. Second operand has 5 states, 5 states have (on average 33.0) internal successors, (165), 5 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:41:49,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:41:49,487 INFO L93 Difference]: Finished difference Result 56531 states and 86000 transitions. [2023-12-15 23:41:49,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 23:41:49,487 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.0) internal successors, (165), 5 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 165 [2023-12-15 23:41:49,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:41:49,563 INFO L225 Difference]: With dead ends: 56531 [2023-12-15 23:41:49,563 INFO L226 Difference]: Without dead ends: 45817 [2023-12-15 23:41:49,591 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-15 23:41:49,592 INFO L413 NwaCegarLoop]: 596 mSDtfsCounter, 1107 mSDsluCounter, 861 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1107 SdHoareTripleChecker+Valid, 1457 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 23:41:49,592 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1107 Valid, 1457 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 23:41:49,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45817 states. [2023-12-15 23:41:50,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45817 to 34175. [2023-12-15 23:41:50,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34175 states, 34174 states have (on average 1.4794873295487798) internal successors, (50560), 34174 states have internal predecessors, (50560), 0 states have call successors, (0), 0 states 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 23:41:50,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34175 states to 34175 states and 50560 transitions. [2023-12-15 23:41:50,207 INFO L78 Accepts]: Start accepts. Automaton has 34175 states and 50560 transitions. Word has length 165 [2023-12-15 23:41:50,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:41:50,207 INFO L495 AbstractCegarLoop]: Abstraction has 34175 states and 50560 transitions. [2023-12-15 23:41:50,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.0) internal successors, (165), 5 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:41:50,208 INFO L276 IsEmpty]: Start isEmpty. Operand 34175 states and 50560 transitions. [2023-12-15 23:41:50,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2023-12-15 23:41:50,225 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:41:50,226 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:41:50,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-15 23:41:50,226 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:41:50,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:41:50,226 INFO L85 PathProgramCache]: Analyzing trace with hash 592124377, now seen corresponding path program 1 times [2023-12-15 23:41:50,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:41:50,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225446519] [2023-12-15 23:41:50,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:41:50,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:41:50,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:41:50,305 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 23:41:50,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:41:50,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225446519] [2023-12-15 23:41:50,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225446519] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:41:50,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:41:50,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:41:50,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002142848] [2023-12-15 23:41:50,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:41:50,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:41:50,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:41:50,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:41:50,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:41:50,307 INFO L87 Difference]: Start difference. First operand 34175 states and 50560 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:41:50,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:41:50,894 INFO L93 Difference]: Finished difference Result 76087 states and 114846 transitions. [2023-12-15 23:41:50,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:41:50,894 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 165 [2023-12-15 23:41:50,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:41:50,989 INFO L225 Difference]: With dead ends: 76087 [2023-12-15 23:41:50,989 INFO L226 Difference]: Without dead ends: 53181 [2023-12-15 23:41:51,011 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 23:41:51,012 INFO L413 NwaCegarLoop]: 456 mSDtfsCounter, 300 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 792 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:41:51,012 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [300 Valid, 792 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:41:51,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53181 states. [2023-12-15 23:41:51,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53181 to 53179. [2023-12-15 23:41:51,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53179 states, 53178 states have (on average 1.4715107751325736) internal successors, (78252), 53178 states have internal predecessors, (78252), 0 states have call successors, (0), 0 states 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 23:41:51,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53179 states to 53179 states and 78252 transitions. [2023-12-15 23:41:51,875 INFO L78 Accepts]: Start accepts. Automaton has 53179 states and 78252 transitions. Word has length 165 [2023-12-15 23:41:51,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:41:51,876 INFO L495 AbstractCegarLoop]: Abstraction has 53179 states and 78252 transitions. [2023-12-15 23:41:51,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:41:51,876 INFO L276 IsEmpty]: Start isEmpty. Operand 53179 states and 78252 transitions. [2023-12-15 23:41:51,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2023-12-15 23:41:51,896 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:41:51,896 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:41:51,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-15 23:41:51,897 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:41:51,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:41:51,897 INFO L85 PathProgramCache]: Analyzing trace with hash 697258081, now seen corresponding path program 1 times [2023-12-15 23:41:51,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:41:51,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299236627] [2023-12-15 23:41:51,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:41:51,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:41:51,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:41:52,082 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 23:41:52,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:41:52,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299236627] [2023-12-15 23:41:52,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299236627] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:41:52,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:41:52,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-15 23:41:52,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901790070] [2023-12-15 23:41:52,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:41:52,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-15 23:41:52,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:41:52,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-15 23:41:52,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-12-15 23:41:52,209 INFO L87 Difference]: Start difference. First operand 53179 states and 78252 transitions. Second operand has 8 states, 8 states have (on average 20.625) internal successors, (165), 7 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:41:53,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:41:53,407 INFO L93 Difference]: Finished difference Result 199413 states and 298634 transitions. [2023-12-15 23:41:53,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-15 23:41:53,408 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 20.625) internal successors, (165), 7 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 165 [2023-12-15 23:41:53,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:41:53,692 INFO L225 Difference]: With dead ends: 199413 [2023-12-15 23:41:53,693 INFO L226 Difference]: Without dead ends: 152005 [2023-12-15 23:41:53,762 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=96, Invalid=176, Unknown=0, NotChecked=0, Total=272 [2023-12-15 23:41:53,762 INFO L413 NwaCegarLoop]: 421 mSDtfsCounter, 5832 mSDsluCounter, 932 mSDsCounter, 0 mSdLazyCounter, 369 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5832 SdHoareTripleChecker+Valid, 1353 SdHoareTripleChecker+Invalid, 455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-15 23:41:53,762 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5832 Valid, 1353 Invalid, 455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 369 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-15 23:41:53,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152005 states. [2023-12-15 23:41:55,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152005 to 76203. [2023-12-15 23:41:55,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76203 states, 76202 states have (on average 1.4489908401354294) internal successors, (110416), 76202 states have internal predecessors, (110416), 0 states have call successors, (0), 0 states 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 23:41:55,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76203 states to 76203 states and 110416 transitions. [2023-12-15 23:41:55,547 INFO L78 Accepts]: Start accepts. Automaton has 76203 states and 110416 transitions. Word has length 165 [2023-12-15 23:41:55,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:41:55,547 INFO L495 AbstractCegarLoop]: Abstraction has 76203 states and 110416 transitions. [2023-12-15 23:41:55,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.625) internal successors, (165), 7 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:41:55,548 INFO L276 IsEmpty]: Start isEmpty. Operand 76203 states and 110416 transitions. [2023-12-15 23:41:55,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2023-12-15 23:41:55,570 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:41:55,570 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:41:55,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-15 23:41:55,570 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:41:55,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:41:55,571 INFO L85 PathProgramCache]: Analyzing trace with hash -1923534673, now seen corresponding path program 1 times [2023-12-15 23:41:55,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:41:55,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628540151] [2023-12-15 23:41:55,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:41:55,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:41:55,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:41:55,992 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 23:41:55,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:41:55,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628540151] [2023-12-15 23:41:55,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628540151] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:41:55,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:41:55,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 23:41:55,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466924192] [2023-12-15 23:41:55,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:41:55,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 23:41:55,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:41:55,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 23:41:55,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 23:41:55,995 INFO L87 Difference]: Start difference. First operand 76203 states and 110416 transitions. Second operand has 4 states, 4 states have (on average 41.25) internal successors, (165), 4 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:41:56,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:41:56,598 INFO L93 Difference]: Finished difference Result 131912 states and 191147 transitions. [2023-12-15 23:41:56,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 23:41:56,599 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.25) internal successors, (165), 4 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 165 [2023-12-15 23:41:56,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:41:56,788 INFO L225 Difference]: With dead ends: 131912 [2023-12-15 23:41:56,788 INFO L226 Difference]: Without dead ends: 68292 [2023-12-15 23:41:56,823 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 23:41:56,824 INFO L413 NwaCegarLoop]: 517 mSDtfsCounter, 53 mSDsluCounter, 954 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 1471 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:41:56,824 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 1471 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:41:56,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68292 states. [2023-12-15 23:41:57,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68292 to 68292. [2023-12-15 23:41:57,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68292 states, 68291 states have (on average 1.4492246416072396) internal successors, (98969), 68291 states have internal predecessors, (98969), 0 states have call successors, (0), 0 states 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 23:41:57,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68292 states to 68292 states and 98969 transitions. [2023-12-15 23:41:57,992 INFO L78 Accepts]: Start accepts. Automaton has 68292 states and 98969 transitions. Word has length 165 [2023-12-15 23:41:57,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:41:57,992 INFO L495 AbstractCegarLoop]: Abstraction has 68292 states and 98969 transitions. [2023-12-15 23:41:57,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.25) internal successors, (165), 4 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:41:57,992 INFO L276 IsEmpty]: Start isEmpty. Operand 68292 states and 98969 transitions. [2023-12-15 23:41:58,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2023-12-15 23:41:58,015 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:41:58,015 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:41:58,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-15 23:41:58,016 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:41:58,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:41:58,016 INFO L85 PathProgramCache]: Analyzing trace with hash -1037119766, now seen corresponding path program 1 times [2023-12-15 23:41:58,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:41:58,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410109777] [2023-12-15 23:41:58,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:41:58,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:41:58,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:41:58,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:41:58,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:41:58,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410109777] [2023-12-15 23:41:58,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410109777] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:41:58,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:41:58,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:41:58,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968824735] [2023-12-15 23:41:58,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:41:58,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:41:58,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:41:58,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:41:58,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:41:58,064 INFO L87 Difference]: Start difference. First operand 68292 states and 98969 transitions. Second operand has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:41:58,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:41:58,665 INFO L93 Difference]: Finished difference Result 165664 states and 241971 transitions. [2023-12-15 23:41:58,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:41:58,666 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 169 [2023-12-15 23:41:58,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:41:58,827 INFO L225 Difference]: With dead ends: 165664 [2023-12-15 23:41:58,828 INFO L226 Difference]: Without dead ends: 109839 [2023-12-15 23:41:58,880 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 23:41:58,880 INFO L413 NwaCegarLoop]: 666 mSDtfsCounter, 291 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 291 SdHoareTripleChecker+Valid, 1013 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:41:58,881 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [291 Valid, 1013 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:41:58,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109839 states. [2023-12-15 23:42:00,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109839 to 99255. [2023-12-15 23:42:00,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99255 states, 99254 states have (on average 1.4806456162975798) internal successors, (146960), 99254 states have internal predecessors, (146960), 0 states have call successors, (0), 0 states 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 23:42:00,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99255 states to 99255 states and 146960 transitions. [2023-12-15 23:42:00,321 INFO L78 Accepts]: Start accepts. Automaton has 99255 states and 146960 transitions. Word has length 169 [2023-12-15 23:42:00,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:42:00,321 INFO L495 AbstractCegarLoop]: Abstraction has 99255 states and 146960 transitions. [2023-12-15 23:42:00,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:42:00,322 INFO L276 IsEmpty]: Start isEmpty. Operand 99255 states and 146960 transitions. [2023-12-15 23:42:00,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2023-12-15 23:42:00,346 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:42:00,346 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:42:00,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-15 23:42:00,346 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:42:00,347 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:42:00,347 INFO L85 PathProgramCache]: Analyzing trace with hash -963175421, now seen corresponding path program 1 times [2023-12-15 23:42:00,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:42:00,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537850963] [2023-12-15 23:42:00,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:42:00,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:42:00,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:42:00,396 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 23:42:00,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:42:00,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537850963] [2023-12-15 23:42:00,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537850963] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:42:00,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:42:00,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:42:00,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371821462] [2023-12-15 23:42:00,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:42:00,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-15 23:42:00,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:42:00,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-15 23:42:00,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-15 23:42:00,398 INFO L87 Difference]: Start difference. First operand 99255 states and 146960 transitions. Second operand has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:42:01,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:42:01,455 INFO L93 Difference]: Finished difference Result 239563 states and 356569 transitions. [2023-12-15 23:42:01,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-15 23:42:01,455 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 169 [2023-12-15 23:42:01,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:42:02,032 INFO L225 Difference]: With dead ends: 239563 [2023-12-15 23:42:02,032 INFO L226 Difference]: Without dead ends: 160480 [2023-12-15 23:42:02,082 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 23:42:02,082 INFO L413 NwaCegarLoop]: 653 mSDtfsCounter, 288 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 986 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:42:02,083 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [288 Valid, 986 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:42:02,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160480 states. [2023-12-15 23:42:03,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160480 to 149838. [2023-12-15 23:42:03,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149838 states, 149837 states have (on average 1.4963660511088717) internal successors, (224211), 149837 states have internal predecessors, (224211), 0 states have call successors, (0), 0 states 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 23:42:04,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149838 states to 149838 states and 224211 transitions. [2023-12-15 23:42:04,441 INFO L78 Accepts]: Start accepts. Automaton has 149838 states and 224211 transitions. Word has length 169 [2023-12-15 23:42:04,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:42:04,441 INFO L495 AbstractCegarLoop]: Abstraction has 149838 states and 224211 transitions. [2023-12-15 23:42:04,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:42:04,441 INFO L276 IsEmpty]: Start isEmpty. Operand 149838 states and 224211 transitions. [2023-12-15 23:42:04,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2023-12-15 23:42:04,460 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:42:04,460 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:42:04,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-15 23:42:04,460 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:42:04,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:42:04,461 INFO L85 PathProgramCache]: Analyzing trace with hash -2067455118, now seen corresponding path program 1 times [2023-12-15 23:42:04,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:42:04,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423530220] [2023-12-15 23:42:04,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:42:04,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:42:04,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:42:04,774 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 23:42:04,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:42:04,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423530220] [2023-12-15 23:42:04,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423530220] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:42:04,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:42:04,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 23:42:04,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118035979] [2023-12-15 23:42:04,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:42:04,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 23:42:04,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:42:04,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 23:42:04,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 23:42:04,776 INFO L87 Difference]: Start difference. First operand 149838 states and 224211 transitions. Second operand has 4 states, 4 states have (on average 42.5) internal successors, (170), 4 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:42:05,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:42:05,881 INFO L93 Difference]: Finished difference Result 270254 states and 403931 transitions. [2023-12-15 23:42:05,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 23:42:05,882 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 42.5) internal successors, (170), 4 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 170 [2023-12-15 23:42:05,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:42:06,083 INFO L225 Difference]: With dead ends: 270254 [2023-12-15 23:42:06,084 INFO L226 Difference]: Without dead ends: 120473 [2023-12-15 23:42:06,169 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 23:42:06,169 INFO L413 NwaCegarLoop]: 505 mSDtfsCounter, 45 mSDsluCounter, 941 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 1446 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:42:06,170 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 1446 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:42:06,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120473 states. [2023-12-15 23:42:07,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120473 to 120473. [2023-12-15 23:42:07,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120473 states, 120472 states have (on average 1.4923965734776545) internal successors, (179792), 120472 states have internal predecessors, (179792), 0 states have call successors, (0), 0 states 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 23:42:08,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120473 states to 120473 states and 179792 transitions. [2023-12-15 23:42:08,077 INFO L78 Accepts]: Start accepts. Automaton has 120473 states and 179792 transitions. Word has length 170 [2023-12-15 23:42:08,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:42:08,077 INFO L495 AbstractCegarLoop]: Abstraction has 120473 states and 179792 transitions. [2023-12-15 23:42:08,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.5) internal successors, (170), 4 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:42:08,077 INFO L276 IsEmpty]: Start isEmpty. Operand 120473 states and 179792 transitions. [2023-12-15 23:42:08,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2023-12-15 23:42:08,093 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:42:08,093 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:42:08,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-15 23:42:08,094 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:42:08,094 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:42:08,094 INFO L85 PathProgramCache]: Analyzing trace with hash -1521577859, now seen corresponding path program 1 times [2023-12-15 23:42:08,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:42:08,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810389846] [2023-12-15 23:42:08,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:42:08,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:42:08,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:42:08,555 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 23:42:08,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:42:08,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810389846] [2023-12-15 23:42:08,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810389846] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:42:08,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:42:08,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 23:42:08,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332778341] [2023-12-15 23:42:08,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:42:08,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 23:42:08,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:42:08,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 23:42:08,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-15 23:42:08,557 INFO L87 Difference]: Start difference. First operand 120473 states and 179792 transitions. Second operand has 5 states, 5 states have (on average 35.0) internal successors, (175), 4 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:42:09,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:42:09,203 INFO L93 Difference]: Finished difference Result 229583 states and 343047 transitions. [2023-12-15 23:42:09,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 23:42:09,203 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.0) internal successors, (175), 4 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 175 [2023-12-15 23:42:09,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:42:09,723 INFO L225 Difference]: With dead ends: 229583 [2023-12-15 23:42:09,723 INFO L226 Difference]: Without dead ends: 120473 [2023-12-15 23:42:09,774 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-15 23:42:09,777 INFO L413 NwaCegarLoop]: 365 mSDtfsCounter, 1232 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1232 SdHoareTripleChecker+Valid, 455 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 23:42:09,777 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1232 Valid, 455 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 23:42:09,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120473 states. [2023-12-15 23:42:11,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120473 to 120473. [2023-12-15 23:42:11,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120473 states, 120472 states have (on average 1.4815392788365762) internal successors, (178484), 120472 states have internal predecessors, (178484), 0 states have call successors, (0), 0 states 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 23:42:11,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120473 states to 120473 states and 178484 transitions. [2023-12-15 23:42:11,384 INFO L78 Accepts]: Start accepts. Automaton has 120473 states and 178484 transitions. Word has length 175 [2023-12-15 23:42:11,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:42:11,384 INFO L495 AbstractCegarLoop]: Abstraction has 120473 states and 178484 transitions. [2023-12-15 23:42:11,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.0) internal successors, (175), 4 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:42:11,384 INFO L276 IsEmpty]: Start isEmpty. Operand 120473 states and 178484 transitions. [2023-12-15 23:42:11,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2023-12-15 23:42:11,400 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:42:11,400 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:42:11,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-15 23:42:11,400 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:42:11,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:42:11,401 INFO L85 PathProgramCache]: Analyzing trace with hash -72475614, now seen corresponding path program 1 times [2023-12-15 23:42:11,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:42:11,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122743358] [2023-12-15 23:42:11,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:42:11,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:42:11,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:42:11,978 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 23:42:11,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:42:11,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122743358] [2023-12-15 23:42:11,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122743358] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:42:11,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:42:11,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 23:42:11,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279664602] [2023-12-15 23:42:11,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:42:11,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 23:42:11,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:42:11,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 23:42:11,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 23:42:11,980 INFO L87 Difference]: Start difference. First operand 120473 states and 178484 transitions. Second operand has 5 states, 5 states have (on average 35.0) internal successors, (175), 4 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:42:12,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:42:12,922 INFO L93 Difference]: Finished difference Result 231706 states and 343273 transitions. [2023-12-15 23:42:12,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 23:42:12,923 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.0) internal successors, (175), 4 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 175 [2023-12-15 23:42:12,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:42:13,134 INFO L225 Difference]: With dead ends: 231706 [2023-12-15 23:42:13,134 INFO L226 Difference]: Without dead ends: 111482 [2023-12-15 23:42:13,190 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 23:42:13,192 INFO L413 NwaCegarLoop]: 465 mSDtfsCounter, 853 mSDsluCounter, 818 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 853 SdHoareTripleChecker+Valid, 1283 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:42:13,192 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [853 Valid, 1283 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:42:13,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111482 states. [2023-12-15 23:42:14,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111482 to 111440. [2023-12-15 23:42:14,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111440 states, 111439 states have (on average 1.480828076346701) internal successors, (165022), 111439 states have internal predecessors, (165022), 0 states have call successors, (0), 0 states 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 23:42:14,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111440 states to 111440 states and 165022 transitions. [2023-12-15 23:42:14,781 INFO L78 Accepts]: Start accepts. Automaton has 111440 states and 165022 transitions. Word has length 175 [2023-12-15 23:42:14,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:42:14,781 INFO L495 AbstractCegarLoop]: Abstraction has 111440 states and 165022 transitions. [2023-12-15 23:42:14,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.0) internal successors, (175), 4 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-15 23:42:14,782 INFO L276 IsEmpty]: Start isEmpty. Operand 111440 states and 165022 transitions. [2023-12-15 23:42:14,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2023-12-15 23:42:14,796 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:42:14,796 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:42:14,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-15 23:42:14,797 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:42:14,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:42:14,797 INFO L85 PathProgramCache]: Analyzing trace with hash 1791017267, now seen corresponding path program 1 times [2023-12-15 23:42:14,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:42:14,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399533019] [2023-12-15 23:42:14,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:42:14,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:42:15,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:42:15,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:42:15,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:42:15,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399533019] [2023-12-15 23:42:15,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399533019] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:42:15,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:42:15,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-15 23:42:15,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469844513] [2023-12-15 23:42:15,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:42:15,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 23:42:15,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:42:15,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 23:42:15,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 23:42:15,346 INFO L87 Difference]: Start difference. First operand 111440 states and 165022 transitions. Second operand has 4 states, 4 states have (on average 44.25) internal successors, (177), 3 states have internal predecessors, (177), 0 states have call successors, (0), 0 states 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 23:42:16,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:42:16,305 INFO L93 Difference]: Finished difference Result 223027 states and 330197 transitions. [2023-12-15 23:42:16,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 23:42:16,306 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 44.25) internal successors, (177), 3 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2023-12-15 23:42:16,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:42:16,524 INFO L225 Difference]: With dead ends: 223027 [2023-12-15 23:42:16,524 INFO L226 Difference]: Without dead ends: 111848 [2023-12-15 23:42:16,637 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 23:42:16,638 INFO L413 NwaCegarLoop]: 768 mSDtfsCounter, 912 mSDsluCounter, 413 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 912 SdHoareTripleChecker+Valid, 1181 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:42:16,638 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [912 Valid, 1181 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:42:16,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111848 states. [2023-12-15 23:42:17,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111848 to 111691. [2023-12-15 23:42:18,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111691 states, 111690 states have (on average 1.4797743755036261) internal successors, (165276), 111690 states have internal predecessors, (165276), 0 states have call successors, (0), 0 states 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 23:42:18,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111691 states to 111691 states and 165276 transitions. [2023-12-15 23:42:18,249 INFO L78 Accepts]: Start accepts. Automaton has 111691 states and 165276 transitions. Word has length 177 [2023-12-15 23:42:18,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:42:18,249 INFO L495 AbstractCegarLoop]: Abstraction has 111691 states and 165276 transitions. [2023-12-15 23:42:18,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.25) internal successors, (177), 3 states have internal predecessors, (177), 0 states have call successors, (0), 0 states 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 23:42:18,249 INFO L276 IsEmpty]: Start isEmpty. Operand 111691 states and 165276 transitions. [2023-12-15 23:42:18,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2023-12-15 23:42:18,264 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:42:18,268 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:42:18,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-15 23:42:18,268 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:42:18,270 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:42:18,270 INFO L85 PathProgramCache]: Analyzing trace with hash -578995273, now seen corresponding path program 1 times [2023-12-15 23:42:18,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:42:18,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168486768] [2023-12-15 23:42:18,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:42:18,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:42:18,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:42:18,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-15 23:42:18,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:42:18,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168486768] [2023-12-15 23:42:18,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168486768] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:42:18,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:42:18,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 23:42:18,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094244463] [2023-12-15 23:42:18,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:42:18,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 23:42:18,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:42:18,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 23:42:18,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-15 23:42:18,761 INFO L87 Difference]: Start difference. First operand 111691 states and 165276 transitions. Second operand has 4 states, 4 states have (on average 44.25) internal successors, (177), 4 states have internal predecessors, (177), 0 states have call successors, (0), 0 states 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 23:42:19,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:42:19,174 INFO L93 Difference]: Finished difference Result 168998 states and 249740 transitions. [2023-12-15 23:42:19,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 23:42:19,175 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 44.25) internal successors, (177), 4 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2023-12-15 23:42:19,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:42:19,357 INFO L225 Difference]: With dead ends: 168998 [2023-12-15 23:42:19,357 INFO L226 Difference]: Without dead ends: 101182 [2023-12-15 23:42:19,420 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-15 23:42:19,421 INFO L413 NwaCegarLoop]: 480 mSDtfsCounter, 21 mSDsluCounter, 918 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 1398 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:42:19,421 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 1398 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:42:19,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101182 states. [2023-12-15 23:42:20,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101182 to 101182. [2023-12-15 23:42:20,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101182 states, 101181 states have (on average 1.4799320030440497) internal successors, (149741), 101181 states have internal predecessors, (149741), 0 states have call successors, (0), 0 states 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 23:42:21,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101182 states to 101182 states and 149741 transitions. [2023-12-15 23:42:21,450 INFO L78 Accepts]: Start accepts. Automaton has 101182 states and 149741 transitions. Word has length 177 [2023-12-15 23:42:21,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:42:21,451 INFO L495 AbstractCegarLoop]: Abstraction has 101182 states and 149741 transitions. [2023-12-15 23:42:21,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.25) internal successors, (177), 4 states have internal predecessors, (177), 0 states have call successors, (0), 0 states 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 23:42:21,451 INFO L276 IsEmpty]: Start isEmpty. Operand 101182 states and 149741 transitions. [2023-12-15 23:42:21,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-12-15 23:42:21,462 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:42:21,463 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:42:21,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-15 23:42:21,463 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:42:21,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:42:21,476 INFO L85 PathProgramCache]: Analyzing trace with hash 1559619296, now seen corresponding path program 1 times [2023-12-15 23:42:21,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:42:21,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510275199] [2023-12-15 23:42:21,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:42:21,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:42:21,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:42:23,748 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 23:42:23,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:42:23,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510275199] [2023-12-15 23:42:23,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510275199] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:42:23,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:42:23,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2023-12-15 23:42:23,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552775759] [2023-12-15 23:42:23,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:42:23,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-15 23:42:23,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:42:23,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-15 23:42:23,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=365, Unknown=0, NotChecked=0, Total=420 [2023-12-15 23:42:23,752 INFO L87 Difference]: Start difference. First operand 101182 states and 149741 transitions. Second operand has 21 states, 21 states have (on average 8.523809523809524) internal successors, (179), 20 states have internal predecessors, (179), 0 states have call successors, (0), 0 states 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 23:42:27,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:42:27,947 INFO L93 Difference]: Finished difference Result 238993 states and 354219 transitions. [2023-12-15 23:42:27,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-15 23:42:27,948 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.523809523809524) internal successors, (179), 20 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 179 [2023-12-15 23:42:27,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:42:28,245 INFO L225 Difference]: With dead ends: 238993 [2023-12-15 23:42:28,246 INFO L226 Difference]: Without dead ends: 192327 [2023-12-15 23:42:28,297 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=297, Invalid=1035, Unknown=0, NotChecked=0, Total=1332 [2023-12-15 23:42:28,298 INFO L413 NwaCegarLoop]: 737 mSDtfsCounter, 2520 mSDsluCounter, 9259 mSDsCounter, 0 mSdLazyCounter, 3383 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2520 SdHoareTripleChecker+Valid, 9996 SdHoareTripleChecker+Invalid, 3394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 3383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-15 23:42:28,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2520 Valid, 9996 Invalid, 3394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 3383 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-15 23:42:28,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192327 states. [2023-12-15 23:42:30,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192327 to 101768. [2023-12-15 23:42:30,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101768 states, 101767 states have (on average 1.4782395078954869) internal successors, (150436), 101767 states have internal predecessors, (150436), 0 states have call successors, (0), 0 states 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 23:42:30,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101768 states to 101768 states and 150436 transitions. [2023-12-15 23:42:30,366 INFO L78 Accepts]: Start accepts. Automaton has 101768 states and 150436 transitions. Word has length 179 [2023-12-15 23:42:30,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:42:30,380 INFO L495 AbstractCegarLoop]: Abstraction has 101768 states and 150436 transitions. [2023-12-15 23:42:30,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.523809523809524) internal successors, (179), 20 states have internal predecessors, (179), 0 states have call successors, (0), 0 states 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 23:42:30,380 INFO L276 IsEmpty]: Start isEmpty. Operand 101768 states and 150436 transitions. [2023-12-15 23:42:30,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-12-15 23:42:30,405 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:42:30,405 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:42:30,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-15 23:42:30,405 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:42:30,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:42:30,406 INFO L85 PathProgramCache]: Analyzing trace with hash 975050591, now seen corresponding path program 1 times [2023-12-15 23:42:30,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:42:30,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566694737] [2023-12-15 23:42:30,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:42:30,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:42:30,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:42:30,964 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 23:42:30,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:42:30,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566694737] [2023-12-15 23:42:30,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566694737] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:42:30,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:42:30,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-15 23:42:30,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065509221] [2023-12-15 23:42:30,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:42:30,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-15 23:42:30,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:42:30,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-15 23:42:30,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 23:42:30,966 INFO L87 Difference]: Start difference. First operand 101768 states and 150436 transitions. Second operand has 4 states, 4 states have (on average 44.75) internal successors, (179), 4 states have internal predecessors, (179), 0 states have call successors, (0), 0 states 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 23:42:31,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:42:31,433 INFO L93 Difference]: Finished difference Result 177390 states and 265008 transitions. [2023-12-15 23:42:31,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-15 23:42:31,434 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 44.75) internal successors, (179), 4 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 179 [2023-12-15 23:42:31,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:42:31,636 INFO L225 Difference]: With dead ends: 177390 [2023-12-15 23:42:31,636 INFO L226 Difference]: Without dead ends: 101770 [2023-12-15 23:42:32,000 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-15 23:42:32,000 INFO L413 NwaCegarLoop]: 460 mSDtfsCounter, 763 mSDsluCounter, 429 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 763 SdHoareTripleChecker+Valid, 889 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-15 23:42:32,001 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [763 Valid, 889 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-15 23:42:32,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101770 states. [2023-12-15 23:42:32,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101770 to 88542. [2023-12-15 23:42:33,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88542 states, 88541 states have (on average 1.4686981172564122) internal successors, (130040), 88541 states have internal predecessors, (130040), 0 states have call successors, (0), 0 states 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 23:42:33,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88542 states to 88542 states and 130040 transitions. [2023-12-15 23:42:33,399 INFO L78 Accepts]: Start accepts. Automaton has 88542 states and 130040 transitions. Word has length 179 [2023-12-15 23:42:33,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-15 23:42:33,399 INFO L495 AbstractCegarLoop]: Abstraction has 88542 states and 130040 transitions. [2023-12-15 23:42:33,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.75) internal successors, (179), 4 states have internal predecessors, (179), 0 states have call successors, (0), 0 states 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 23:42:33,400 INFO L276 IsEmpty]: Start isEmpty. Operand 88542 states and 130040 transitions. [2023-12-15 23:42:33,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-12-15 23:42:33,414 INFO L187 NwaCegarLoop]: Found error trace [2023-12-15 23:42:33,415 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-15 23:42:33,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-15 23:42:33,416 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-15 23:42:33,416 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-15 23:42:33,416 INFO L85 PathProgramCache]: Analyzing trace with hash 492095186, now seen corresponding path program 1 times [2023-12-15 23:42:33,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-15 23:42:33,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147047356] [2023-12-15 23:42:33,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-15 23:42:33,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-15 23:42:33,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-15 23:42:33,588 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 23:42:33,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-15 23:42:33,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147047356] [2023-12-15 23:42:33,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147047356] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-15 23:42:33,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-15 23:42:33,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-15 23:42:33,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223997564] [2023-12-15 23:42:33,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-15 23:42:33,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-15 23:42:33,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-15 23:42:33,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-15 23:42:33,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-15 23:42:33,590 INFO L87 Difference]: Start difference. First operand 88542 states and 130040 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 0 states have call successors, (0), 0 states 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 23:42:34,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-15 23:42:34,592 INFO L93 Difference]: Finished difference Result 202562 states and 302596 transitions. [2023-12-15 23:42:34,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-15 23:42:34,593 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 179 [2023-12-15 23:42:34,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-15 23:42:34,902 INFO L225 Difference]: With dead ends: 202562 [2023-12-15 23:42:34,902 INFO L226 Difference]: Without dead ends: 177570 [2023-12-15 23:42:34,955 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-15 23:42:34,956 INFO L413 NwaCegarLoop]: 688 mSDtfsCounter, 1049 mSDsluCounter, 941 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1049 SdHoareTripleChecker+Valid, 1629 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-15 23:42:34,956 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1049 Valid, 1629 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-15 23:42:35,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177570 states. Received shutdown request... [2023-12-15 23:42:35,566 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-15 23:42:35,568 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-15 23:42:35,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-12-15 23:42:35,568 WARN L619 AbstractCegarLoop]: Verification canceled: while executing MinimizeSevpa. [2023-12-15 23:42:35,571 INFO L445 BasicCegarLoop]: Path program 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 23:42:35,573 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-15 23:42:35,574 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 11:42:35 BoogieIcfgContainer [2023-12-15 23:42:35,574 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-15 23:42:35,580 INFO L158 Benchmark]: Toolchain (without parser) took 53912.90ms. Allocated memory was 375.4MB in the beginning and 7.9GB in the end (delta: 7.5GB). Free memory was 323.0MB in the beginning and 6.4GB in the end (delta: -6.0GB). Peak memory consumption was 1.8GB. Max. memory is 8.0GB. [2023-12-15 23:42:35,581 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 187.7MB. Free memory is still 138.6MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-15 23:42:35,581 INFO L158 Benchmark]: CACSL2BoogieTranslator took 441.80ms. Allocated memory is still 375.4MB. Free memory was 323.0MB in the beginning and 289.9MB in the end (delta: 33.1MB). Peak memory consumption was 33.6MB. Max. memory is 8.0GB. [2023-12-15 23:42:35,581 INFO L158 Benchmark]: Boogie Procedure Inliner took 118.73ms. Allocated memory is still 375.4MB. Free memory was 289.9MB in the beginning and 283.7MB in the end (delta: 6.2MB). Peak memory consumption was 6.3MB. Max. memory is 8.0GB. [2023-12-15 23:42:35,581 INFO L158 Benchmark]: Boogie Preprocessor took 112.64ms. Allocated memory is still 375.4MB. Free memory was 283.7MB in the beginning and 277.4MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 8.0GB. [2023-12-15 23:42:35,581 INFO L158 Benchmark]: RCFGBuilder took 1019.50ms. Allocated memory is still 375.4MB. Free memory was 277.4MB in the beginning and 272.0MB in the end (delta: 5.4MB). Peak memory consumption was 40.9MB. Max. memory is 8.0GB. [2023-12-15 23:42:35,581 INFO L158 Benchmark]: TraceAbstraction took 52216.28ms. Allocated memory was 375.4MB in the beginning and 7.9GB in the end (delta: 7.5GB). Free memory was 271.5MB in the beginning and 6.4GB in the end (delta: -6.1GB). Peak memory consumption was 1.8GB. Max. memory is 8.0GB. [2023-12-15 23:42:35,582 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 187.7MB. Free memory is still 138.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 441.80ms. Allocated memory is still 375.4MB. Free memory was 323.0MB in the beginning and 289.9MB in the end (delta: 33.1MB). Peak memory consumption was 33.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 118.73ms. Allocated memory is still 375.4MB. Free memory was 289.9MB in the beginning and 283.7MB in the end (delta: 6.2MB). Peak memory consumption was 6.3MB. Max. memory is 8.0GB. * Boogie Preprocessor took 112.64ms. Allocated memory is still 375.4MB. Free memory was 283.7MB in the beginning and 277.4MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 8.0GB. * RCFGBuilder took 1019.50ms. Allocated memory is still 375.4MB. Free memory was 277.4MB in the beginning and 272.0MB in the end (delta: 5.4MB). Peak memory consumption was 40.9MB. Max. memory is 8.0GB. * TraceAbstraction took 52216.28ms. Allocated memory was 375.4MB in the beginning and 7.9GB in the end (delta: 7.5GB). Free memory was 271.5MB in the beginning and 6.4GB in the end (delta: -6.1GB). Peak memory consumption was 1.8GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 914]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 914). Cancelled while executing MinimizeSevpa. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 335 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 52.2s, OverallIterations: 26, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.3s, AutomataDifference: 20.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 22407 SdHoareTripleChecker+Valid, 3.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 22407 mSDsluCounter, 40667 SdHoareTripleChecker+Invalid, 2.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 23853 mSDsCounter, 267 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4644 IncrementalHoareTripleChecker+Invalid, 4911 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 267 mSolverCounterUnsat, 16814 mSDtfsCounter, 4644 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 155 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 2.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=149838occurred in iteration=18, InterpolantAutomatonStates: 124, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 22.8s AutomataMinimizationTime, 26 MinimizatonAttempts, 233974 StatesRemovedByMinimization, 20 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.4s SatisfiabilityAnalysisTime, 6.4s InterpolantComputationTime, 4281 NumberOfCodeBlocks, 4281 NumberOfCodeBlocksAsserted, 26 NumberOfCheckSat, 4255 ConstructedInterpolants, 0 QuantifiedInterpolants, 15967 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 26 InterpolantComputations, 26 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown