/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label51.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 01:19:35,039 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 01:19:35,085 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-16 01:19:35,088 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 01:19:35,088 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 01:19:35,102 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 01:19:35,102 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 01:19:35,103 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 01:19:35,103 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 01:19:35,103 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 01:19:35,104 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 01:19:35,105 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 01:19:35,105 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 01:19:35,105 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 01:19:35,105 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 01:19:35,106 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 01:19:35,106 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 01:19:35,106 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 01:19:35,106 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-16 01:19:35,107 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 01:19:35,107 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 01:19:35,110 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 01:19:35,110 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 01:19:35,110 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 01:19:35,110 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 01:19:35,111 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 01:19:35,111 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 01:19:35,111 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 01:19:35,111 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 01:19:35,111 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 01:19:35,112 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 01:19:35,112 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 01:19:35,112 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 01:19:35,112 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 01:19:35,112 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 01:19:35,113 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 01:19:35,113 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-16 01:19:35,113 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-16 01:19:35,113 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 01:19:35,113 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 01:19:35,113 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 01:19:35,116 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 01:19:35,116 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 01:19:35,117 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-16 01:19:35,287 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 01:19:35,309 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 01:19:35,311 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 01:19:35,312 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 01:19:35,312 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 01:19:35,313 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label51.c [2023-12-16 01:19:36,380 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 01:19:36,634 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 01:19:36,635 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label51.c [2023-12-16 01:19:36,648 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bcd128c1a/7c821215ec2c439d8138afa8bcd9f9c4/FLAGec1d4bba1 [2023-12-16 01:19:36,660 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bcd128c1a/7c821215ec2c439d8138afa8bcd9f9c4 [2023-12-16 01:19:36,662 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 01:19:36,663 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 01:19:36,664 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 01:19:36,664 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 01:19:36,667 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 01:19:36,668 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 01:19:36" (1/1) ... [2023-12-16 01:19:36,669 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62328c34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:19:36, skipping insertion in model container [2023-12-16 01:19:36,669 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 01:19:36" (1/1) ... [2023-12-16 01:19:36,724 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 01:19:37,120 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label51.c[59610,59623] [2023-12-16 01:19:37,152 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 01:19:37,160 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 01:19:37,342 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label51.c[59610,59623] [2023-12-16 01:19:37,357 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 01:19:37,371 INFO L206 MainTranslator]: Completed translation [2023-12-16 01:19:37,373 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:19:37 WrapperNode [2023-12-16 01:19:37,373 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 01:19:37,374 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 01:19:37,375 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 01:19:37,375 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 01:19:37,379 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:19:37" (1/1) ... [2023-12-16 01:19:37,403 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:19:37" (1/1) ... [2023-12-16 01:19:37,474 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1772 [2023-12-16 01:19:37,475 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 01:19:37,476 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 01:19:37,476 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 01:19:37,476 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 01:19:37,483 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:19:37" (1/1) ... [2023-12-16 01:19:37,484 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:19:37" (1/1) ... [2023-12-16 01:19:37,492 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:19:37" (1/1) ... [2023-12-16 01:19:37,532 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]. [2023-12-16 01:19:37,532 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:19:37" (1/1) ... [2023-12-16 01:19:37,532 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:19:37" (1/1) ... [2023-12-16 01:19:37,619 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:19:37" (1/1) ... [2023-12-16 01:19:37,626 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:19:37" (1/1) ... [2023-12-16 01:19:37,634 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:19:37" (1/1) ... [2023-12-16 01:19:37,642 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:19:37" (1/1) ... [2023-12-16 01:19:37,654 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 01:19:37,654 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 01:19:37,655 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 01:19:37,655 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 01:19:37,655 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:19:37" (1/1) ... [2023-12-16 01:19:37,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 01:19:37,668 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 01:19:37,730 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) [2023-12-16 01:19:37,748 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 [2023-12-16 01:19:37,754 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 01:19:37,755 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-16 01:19:37,755 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 01:19:37,755 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 01:19:37,817 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 01:19:37,821 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 01:19:39,096 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 01:19:39,125 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 01:19:39,126 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-16 01:19:39,126 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 01:19:39 BoogieIcfgContainer [2023-12-16 01:19:39,126 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 01:19:39,128 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 01:19:39,128 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 01:19:39,130 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 01:19:39,130 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 01:19:36" (1/3) ... [2023-12-16 01:19:39,130 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c84ab29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 01:19:39, skipping insertion in model container [2023-12-16 01:19:39,130 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:19:37" (2/3) ... [2023-12-16 01:19:39,131 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c84ab29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 01:19:39, skipping insertion in model container [2023-12-16 01:19:39,131 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 01:19:39" (3/3) ... [2023-12-16 01:19:39,131 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label51.c [2023-12-16 01:19:39,143 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 01:19:39,144 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-16 01:19:39,176 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 01:19:39,181 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;@733869e7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 01:19:39,181 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-16 01:19:39,186 INFO L276 IsEmpty]: Start isEmpty. Operand has 240 states, 238 states have (on average 1.9201680672268908) internal successors, (457), 239 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:19:39,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2023-12-16 01:19:39,195 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:19:39,196 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:19:39,196 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:19:39,199 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:19:39,200 INFO L85 PathProgramCache]: Analyzing trace with hash -1872444927, now seen corresponding path program 1 times [2023-12-16 01:19:39,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:19:39,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469717231] [2023-12-16 01:19:39,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:19:39,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:19:39,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:19:39,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 01:19:39,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:19:39,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469717231] [2023-12-16 01:19:39,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469717231] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:19:39,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:19:39,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 01:19:39,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978419056] [2023-12-16 01:19:39,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:19:39,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-16 01:19:39,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:19:39,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-16 01:19:39,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 01:19:39,639 INFO L87 Difference]: Start difference. First operand has 240 states, 238 states have (on average 1.9201680672268908) internal successors, (457), 239 states have internal predecessors, (457), 0 states have call successors, (0), 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 2 states, 2 states have (on average 93.5) internal successors, (187), 2 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:19:39,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:19:39,683 INFO L93 Difference]: Finished difference Result 479 states and 913 transitions. [2023-12-16 01:19:39,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-16 01:19:39,685 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 93.5) internal successors, (187), 2 states have internal predecessors, (187), 0 states have call successors, (0), 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 187 [2023-12-16 01:19:39,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:19:39,692 INFO L225 Difference]: With dead ends: 479 [2023-12-16 01:19:39,692 INFO L226 Difference]: Without dead ends: 238 [2023-12-16 01:19:39,695 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-16 01:19:39,697 INFO L413 NwaCegarLoop]: 392 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 01:19:39,697 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 392 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 01:19:39,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2023-12-16 01:19:39,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 238. [2023-12-16 01:19:39,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 237 states have (on average 1.6540084388185654) internal successors, (392), 237 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:19:39,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 392 transitions. [2023-12-16 01:19:39,728 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 392 transitions. Word has length 187 [2023-12-16 01:19:39,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:19:39,729 INFO L495 AbstractCegarLoop]: Abstraction has 238 states and 392 transitions. [2023-12-16 01:19:39,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 93.5) internal successors, (187), 2 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:19:39,729 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 392 transitions. [2023-12-16 01:19:39,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2023-12-16 01:19:39,731 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:19:39,731 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:19:39,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-16 01:19:39,732 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:19:39,732 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:19:39,732 INFO L85 PathProgramCache]: Analyzing trace with hash -1122569840, now seen corresponding path program 1 times [2023-12-16 01:19:39,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:19:39,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583754377] [2023-12-16 01:19:39,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:19:39,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:19:39,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:19:40,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 01:19:40,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:19:40,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583754377] [2023-12-16 01:19:40,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583754377] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:19:40,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:19:40,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 01:19:40,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915531429] [2023-12-16 01:19:40,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:19:40,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 01:19:40,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:19:40,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 01:19:40,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 01:19:40,158 INFO L87 Difference]: Start difference. First operand 238 states and 392 transitions. Second operand has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 2 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:19:40,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:19:40,894 INFO L93 Difference]: Finished difference Result 694 states and 1153 transitions. [2023-12-16 01:19:40,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 01:19:40,895 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 2 states have internal predecessors, (187), 0 states have call successors, (0), 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 187 [2023-12-16 01:19:40,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:19:40,897 INFO L225 Difference]: With dead ends: 694 [2023-12-16 01:19:40,897 INFO L226 Difference]: Without dead ends: 457 [2023-12-16 01:19:40,898 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 01:19:40,899 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 46 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 599 mSolverCounterSat, 167 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 766 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-16 01:19:40,899 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 105 Invalid, 766 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [167 Valid, 599 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-16 01:19:40,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2023-12-16 01:19:40,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 446. [2023-12-16 01:19:40,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 446 states, 445 states have (on average 1.5932584269662922) internal successors, (709), 445 states have internal predecessors, (709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:19:40,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 709 transitions. [2023-12-16 01:19:40,914 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 709 transitions. Word has length 187 [2023-12-16 01:19:40,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:19:40,914 INFO L495 AbstractCegarLoop]: Abstraction has 446 states and 709 transitions. [2023-12-16 01:19:40,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 2 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:19:40,915 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 709 transitions. [2023-12-16 01:19:40,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2023-12-16 01:19:40,917 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:19:40,917 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:19:40,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-16 01:19:40,917 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:19:40,918 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:19:40,918 INFO L85 PathProgramCache]: Analyzing trace with hash -1260485004, now seen corresponding path program 1 times [2023-12-16 01:19:40,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:19:40,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283190720] [2023-12-16 01:19:40,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:19:40,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:19:40,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:19:41,132 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 01:19:41,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:19:41,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283190720] [2023-12-16 01:19:41,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283190720] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:19:41,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:19:41,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 01:19:41,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344524374] [2023-12-16 01:19:41,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:19:41,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 01:19:41,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:19:41,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 01:19:41,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 01:19:41,135 INFO L87 Difference]: Start difference. First operand 446 states and 709 transitions. Second operand has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 2 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:19:41,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:19:41,859 INFO L93 Difference]: Finished difference Result 1297 states and 2070 transitions. [2023-12-16 01:19:41,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 01:19:41,860 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 2 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 193 [2023-12-16 01:19:41,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:19:41,863 INFO L225 Difference]: With dead ends: 1297 [2023-12-16 01:19:41,863 INFO L226 Difference]: Without dead ends: 852 [2023-12-16 01:19:41,864 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 01:19:41,865 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 216 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 569 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-16 01:19:41,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 190 Invalid, 695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 569 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-16 01:19:41,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 852 states. [2023-12-16 01:19:41,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 852 to 852. [2023-12-16 01:19:41,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 852 states, 851 states have (on average 1.3877790834312573) internal successors, (1181), 851 states have internal predecessors, (1181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:19:41,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 852 states to 852 states and 1181 transitions. [2023-12-16 01:19:41,882 INFO L78 Accepts]: Start accepts. Automaton has 852 states and 1181 transitions. Word has length 193 [2023-12-16 01:19:41,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:19:41,882 INFO L495 AbstractCegarLoop]: Abstraction has 852 states and 1181 transitions. [2023-12-16 01:19:41,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 2 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:19:41,882 INFO L276 IsEmpty]: Start isEmpty. Operand 852 states and 1181 transitions. [2023-12-16 01:19:41,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2023-12-16 01:19:41,884 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:19:41,885 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:19:41,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-16 01:19:41,885 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:19:41,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:19:41,886 INFO L85 PathProgramCache]: Analyzing trace with hash 621492304, now seen corresponding path program 1 times [2023-12-16 01:19:41,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:19:41,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932369343] [2023-12-16 01:19:41,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:19:41,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:19:41,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:19:42,076 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 01:19:42,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:19:42,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932369343] [2023-12-16 01:19:42,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932369343] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:19:42,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:19:42,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 01:19:42,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597011235] [2023-12-16 01:19:42,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:19:42,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 01:19:42,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:19:42,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 01:19:42,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 01:19:42,078 INFO L87 Difference]: Start difference. First operand 852 states and 1181 transitions. Second operand has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 2 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:19:42,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:19:42,688 INFO L93 Difference]: Finished difference Result 2534 states and 3512 transitions. [2023-12-16 01:19:42,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 01:19:42,689 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 2 states have internal predecessors, (200), 0 states have call successors, (0), 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 200 [2023-12-16 01:19:42,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:19:42,693 INFO L225 Difference]: With dead ends: 2534 [2023-12-16 01:19:42,693 INFO L226 Difference]: Without dead ends: 1683 [2023-12-16 01:19:42,695 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 01:19:42,695 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 241 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 632 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 632 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-16 01:19:42,696 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 220 Invalid, 724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 632 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-16 01:19:42,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1683 states. [2023-12-16 01:19:42,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1683 to 1681. [2023-12-16 01:19:42,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1681 states, 1680 states have (on average 1.3279761904761904) internal successors, (2231), 1680 states have internal predecessors, (2231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:19:42,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1681 states to 1681 states and 2231 transitions. [2023-12-16 01:19:42,717 INFO L78 Accepts]: Start accepts. Automaton has 1681 states and 2231 transitions. Word has length 200 [2023-12-16 01:19:42,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:19:42,718 INFO L495 AbstractCegarLoop]: Abstraction has 1681 states and 2231 transitions. [2023-12-16 01:19:42,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 2 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:19:42,718 INFO L276 IsEmpty]: Start isEmpty. Operand 1681 states and 2231 transitions. [2023-12-16 01:19:42,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2023-12-16 01:19:42,721 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:19:42,721 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:19:42,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-16 01:19:42,722 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:19:42,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:19:42,722 INFO L85 PathProgramCache]: Analyzing trace with hash -1152943533, now seen corresponding path program 1 times [2023-12-16 01:19:42,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:19:42,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106351372] [2023-12-16 01:19:42,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:19:42,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:19:42,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:19:42,830 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-16 01:19:42,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:19:42,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106351372] [2023-12-16 01:19:42,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106351372] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:19:42,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:19:42,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 01:19:42,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903016069] [2023-12-16 01:19:42,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:19:42,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 01:19:42,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:19:42,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 01:19:42,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 01:19:42,832 INFO L87 Difference]: Start difference. First operand 1681 states and 2231 transitions. Second operand has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 2 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:19:43,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:19:43,442 INFO L93 Difference]: Finished difference Result 5005 states and 6650 transitions. [2023-12-16 01:19:43,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 01:19:43,443 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 2 states have internal predecessors, (196), 0 states have call successors, (0), 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 201 [2023-12-16 01:19:43,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:19:43,454 INFO L225 Difference]: With dead ends: 5005 [2023-12-16 01:19:43,455 INFO L226 Difference]: Without dead ends: 3325 [2023-12-16 01:19:43,457 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 01:19:43,458 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 249 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 585 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-16 01:19:43,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 88 Invalid, 780 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 585 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-16 01:19:43,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3325 states. [2023-12-16 01:19:43,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3325 to 3309. [2023-12-16 01:19:43,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3309 states, 3308 states have (on average 1.3019951632406288) internal successors, (4307), 3308 states have internal predecessors, (4307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:19:43,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3309 states to 3309 states and 4307 transitions. [2023-12-16 01:19:43,507 INFO L78 Accepts]: Start accepts. Automaton has 3309 states and 4307 transitions. Word has length 201 [2023-12-16 01:19:43,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:19:43,507 INFO L495 AbstractCegarLoop]: Abstraction has 3309 states and 4307 transitions. [2023-12-16 01:19:43,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 2 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:19:43,507 INFO L276 IsEmpty]: Start isEmpty. Operand 3309 states and 4307 transitions. [2023-12-16 01:19:43,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2023-12-16 01:19:43,512 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:19:43,512 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:19:43,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-16 01:19:43,513 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:19:43,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:19:43,513 INFO L85 PathProgramCache]: Analyzing trace with hash 739166786, now seen corresponding path program 1 times [2023-12-16 01:19:43,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:19:43,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152806876] [2023-12-16 01:19:43,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:19:43,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:19:43,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:19:43,722 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-16 01:19:43,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:19:43,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152806876] [2023-12-16 01:19:43,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152806876] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:19:43,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:19:43,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 01:19:43,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970226427] [2023-12-16 01:19:43,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:19:43,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 01:19:43,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:19:43,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 01:19:43,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 01:19:43,724 INFO L87 Difference]: Start difference. First operand 3309 states and 4307 transitions. Second operand has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:19:44,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:19:44,314 INFO L93 Difference]: Finished difference Result 8244 states and 11007 transitions. [2023-12-16 01:19:44,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 01:19:44,315 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 0 states have call successors, (0), 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 208 [2023-12-16 01:19:44,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:19:44,328 INFO L225 Difference]: With dead ends: 8244 [2023-12-16 01:19:44,329 INFO L226 Difference]: Without dead ends: 4936 [2023-12-16 01:19:44,334 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 [2023-12-16 01:19:44,334 INFO L413 NwaCegarLoop]: 373 mSDtfsCounter, 233 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 526 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 401 SdHoareTripleChecker+Invalid, 700 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 01:19:44,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 401 Invalid, 700 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 526 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 01:19:44,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4936 states. [2023-12-16 01:19:44,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4936 to 4934. [2023-12-16 01:19:44,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4934 states, 4933 states have (on average 1.2475167241029799) internal successors, (6154), 4933 states have internal predecessors, (6154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:19:44,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4934 states to 4934 states and 6154 transitions. [2023-12-16 01:19:44,405 INFO L78 Accepts]: Start accepts. Automaton has 4934 states and 6154 transitions. Word has length 208 [2023-12-16 01:19:44,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:19:44,405 INFO L495 AbstractCegarLoop]: Abstraction has 4934 states and 6154 transitions. [2023-12-16 01:19:44,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:19:44,406 INFO L276 IsEmpty]: Start isEmpty. Operand 4934 states and 6154 transitions. [2023-12-16 01:19:44,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2023-12-16 01:19:44,413 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:19:44,413 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:19:44,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-16 01:19:44,414 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:19:44,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:19:44,414 INFO L85 PathProgramCache]: Analyzing trace with hash -1550173314, now seen corresponding path program 1 times [2023-12-16 01:19:44,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:19:44,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632360465] [2023-12-16 01:19:44,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:19:44,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:19:44,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:19:44,751 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-16 01:19:44,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:19:44,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632360465] [2023-12-16 01:19:44,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632360465] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:19:44,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:19:44,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 01:19:44,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260849594] [2023-12-16 01:19:44,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:19:44,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 01:19:44,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:19:44,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 01:19:44,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 01:19:44,753 INFO L87 Difference]: Start difference. First operand 4934 states and 6154 transitions. Second operand has 3 states, 3 states have (on average 73.0) internal successors, (219), 2 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:19:45,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:19:45,454 INFO L93 Difference]: Finished difference Result 14563 states and 18199 transitions. [2023-12-16 01:19:45,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 01:19:45,455 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.0) internal successors, (219), 2 states have internal predecessors, (219), 0 states have call successors, (0), 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 241 [2023-12-16 01:19:45,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:19:45,484 INFO L225 Difference]: With dead ends: 14563 [2023-12-16 01:19:45,484 INFO L226 Difference]: Without dead ends: 9630 [2023-12-16 01:19:45,491 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 01:19:45,493 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 216 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 674 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 674 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-16 01:19:45,493 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 194 Invalid, 763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 674 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-16 01:19:45,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9630 states. [2023-12-16 01:19:45,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9630 to 9621. [2023-12-16 01:19:45,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9621 states, 9620 states have (on average 1.225987525987526) internal successors, (11794), 9620 states have internal predecessors, (11794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:19:45,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9621 states to 9621 states and 11794 transitions. [2023-12-16 01:19:45,672 INFO L78 Accepts]: Start accepts. Automaton has 9621 states and 11794 transitions. Word has length 241 [2023-12-16 01:19:45,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:19:45,673 INFO L495 AbstractCegarLoop]: Abstraction has 9621 states and 11794 transitions. [2023-12-16 01:19:45,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.0) internal successors, (219), 2 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:19:45,673 INFO L276 IsEmpty]: Start isEmpty. Operand 9621 states and 11794 transitions. [2023-12-16 01:19:45,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2023-12-16 01:19:45,689 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:19:45,690 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:19:45,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-16 01:19:45,690 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:19:45,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:19:45,691 INFO L85 PathProgramCache]: Analyzing trace with hash -1232313720, now seen corresponding path program 1 times [2023-12-16 01:19:45,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:19:45,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008176060] [2023-12-16 01:19:45,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:19:45,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:19:45,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:19:46,081 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-16 01:19:46,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:19:46,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008176060] [2023-12-16 01:19:46,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008176060] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:19:46,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:19:46,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 01:19:46,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181295667] [2023-12-16 01:19:46,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:19:46,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 01:19:46,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:19:46,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 01:19:46,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 01:19:46,084 INFO L87 Difference]: Start difference. First operand 9621 states and 11794 transitions. Second operand has 3 states, 3 states have (on average 74.0) internal successors, (222), 2 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:19:46,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:19:46,874 INFO L93 Difference]: Finished difference Result 25776 states and 31493 transitions. [2023-12-16 01:19:46,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 01:19:46,874 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 74.0) internal successors, (222), 2 states have internal predecessors, (222), 0 states have call successors, (0), 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 251 [2023-12-16 01:19:46,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:19:46,923 INFO L225 Difference]: With dead ends: 25776 [2023-12-16 01:19:46,923 INFO L226 Difference]: Without dead ends: 16156 [2023-12-16 01:19:46,936 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 01:19:46,938 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 243 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 755 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 755 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-16 01:19:46,938 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [243 Valid, 221 Invalid, 781 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 755 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-16 01:19:46,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16156 states. [2023-12-16 01:19:47,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16156 to 16147. [2023-12-16 01:19:47,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16147 states, 16146 states have (on average 1.2127461910070605) internal successors, (19581), 16146 states have internal predecessors, (19581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:19:47,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16147 states to 16147 states and 19581 transitions. [2023-12-16 01:19:47,201 INFO L78 Accepts]: Start accepts. Automaton has 16147 states and 19581 transitions. Word has length 251 [2023-12-16 01:19:47,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:19:47,201 INFO L495 AbstractCegarLoop]: Abstraction has 16147 states and 19581 transitions. [2023-12-16 01:19:47,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.0) internal successors, (222), 2 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:19:47,202 INFO L276 IsEmpty]: Start isEmpty. Operand 16147 states and 19581 transitions. [2023-12-16 01:19:47,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2023-12-16 01:19:47,219 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:19:47,219 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:19:47,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-16 01:19:47,219 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:19:47,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:19:47,220 INFO L85 PathProgramCache]: Analyzing trace with hash 560940539, now seen corresponding path program 1 times [2023-12-16 01:19:47,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:19:47,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048871902] [2023-12-16 01:19:47,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:19:47,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:19:47,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:19:47,534 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2023-12-16 01:19:47,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:19:47,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048871902] [2023-12-16 01:19:47,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048871902] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:19:47,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:19:47,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 01:19:47,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396770985] [2023-12-16 01:19:47,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:19:47,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 01:19:47,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:19:47,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 01:19:47,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-16 01:19:47,536 INFO L87 Difference]: Start difference. First operand 16147 states and 19581 transitions. Second operand has 4 states, 4 states have (on average 52.0) internal successors, (208), 3 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:19:48,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:19:48,270 INFO L93 Difference]: Finished difference Result 37732 states and 45989 transitions. [2023-12-16 01:19:48,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 01:19:48,271 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 52.0) internal successors, (208), 3 states have internal predecessors, (208), 0 states have call successors, (0), 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 253 [2023-12-16 01:19:48,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:19:48,305 INFO L225 Difference]: With dead ends: 37732 [2023-12-16 01:19:48,305 INFO L226 Difference]: Without dead ends: 22195 [2023-12-16 01:19:48,324 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-16 01:19:48,326 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 615 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 795 mSolverCounterSat, 214 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 615 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 1009 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 214 IncrementalHoareTripleChecker+Valid, 795 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-16 01:19:48,326 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [615 Valid, 50 Invalid, 1009 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [214 Valid, 795 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-16 01:19:48,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22195 states. [2023-12-16 01:19:48,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22195 to 22188. [2023-12-16 01:19:48,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22188 states, 22187 states have (on average 1.1619416775589309) internal successors, (25780), 22187 states have internal predecessors, (25780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:19:48,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22188 states to 22188 states and 25780 transitions. [2023-12-16 01:19:48,603 INFO L78 Accepts]: Start accepts. Automaton has 22188 states and 25780 transitions. Word has length 253 [2023-12-16 01:19:48,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:19:48,603 INFO L495 AbstractCegarLoop]: Abstraction has 22188 states and 25780 transitions. [2023-12-16 01:19:48,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.0) internal successors, (208), 3 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:19:48,604 INFO L276 IsEmpty]: Start isEmpty. Operand 22188 states and 25780 transitions. [2023-12-16 01:19:48,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2023-12-16 01:19:48,624 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:19:48,624 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:19:48,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-16 01:19:48,625 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:19:48,625 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:19:48,625 INFO L85 PathProgramCache]: Analyzing trace with hash 2067688924, now seen corresponding path program 1 times [2023-12-16 01:19:48,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:19:48,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000168604] [2023-12-16 01:19:48,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:19:48,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:19:48,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:19:49,195 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 01:19:49,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:19:49,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000168604] [2023-12-16 01:19:49,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000168604] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:19:49,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:19:49,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 01:19:49,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141870940] [2023-12-16 01:19:49,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:19:49,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 01:19:49,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:19:49,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 01:19:49,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 01:19:49,197 INFO L87 Difference]: Start difference. First operand 22188 states and 25780 transitions. Second operand has 3 states, 3 states have (on average 87.0) internal successors, (261), 2 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:19:50,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:19:50,017 INFO L93 Difference]: Finished difference Result 39084 states and 45309 transitions. [2023-12-16 01:19:50,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 01:19:50,018 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 87.0) internal successors, (261), 2 states have internal predecessors, (261), 0 states have call successors, (0), 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 261 [2023-12-16 01:19:50,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:19:50,049 INFO L225 Difference]: With dead ends: 39084 [2023-12-16 01:19:50,049 INFO L226 Difference]: Without dead ends: 22188 [2023-12-16 01:19:50,066 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 01:19:50,067 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 133 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 562 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 562 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-16 01:19:50,067 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 149 Invalid, 563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 562 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-16 01:19:50,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22188 states. [2023-12-16 01:19:50,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22188 to 22188. [2023-12-16 01:19:50,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22188 states, 22187 states have (on average 1.1618064632442422) internal successors, (25777), 22187 states have internal predecessors, (25777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:19:50,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22188 states to 22188 states and 25777 transitions. [2023-12-16 01:19:50,389 INFO L78 Accepts]: Start accepts. Automaton has 22188 states and 25777 transitions. Word has length 261 [2023-12-16 01:19:50,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:19:50,389 INFO L495 AbstractCegarLoop]: Abstraction has 22188 states and 25777 transitions. [2023-12-16 01:19:50,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.0) internal successors, (261), 2 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:19:50,390 INFO L276 IsEmpty]: Start isEmpty. Operand 22188 states and 25777 transitions. [2023-12-16 01:19:50,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2023-12-16 01:19:50,413 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:19:50,414 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:19:50,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-16 01:19:50,414 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:19:50,420 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:19:50,421 INFO L85 PathProgramCache]: Analyzing trace with hash 1968154429, now seen corresponding path program 1 times [2023-12-16 01:19:50,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:19:50,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485237014] [2023-12-16 01:19:50,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:19:50,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:19:50,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:19:50,685 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-16 01:19:50,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:19:50,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485237014] [2023-12-16 01:19:50,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485237014] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:19:50,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:19:50,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 01:19:50,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440745945] [2023-12-16 01:19:50,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:19:50,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 01:19:50,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:19:50,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 01:19:50,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 01:19:50,686 INFO L87 Difference]: Start difference. First operand 22188 states and 25777 transitions. Second operand has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 2 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:19:51,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:19:51,362 INFO L93 Difference]: Finished difference Result 42759 states and 50058 transitions. [2023-12-16 01:19:51,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 01:19:51,363 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 2 states have internal predecessors, (263), 0 states have call successors, (0), 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 268 [2023-12-16 01:19:51,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:19:51,406 INFO L225 Difference]: With dead ends: 42759 [2023-12-16 01:19:51,407 INFO L226 Difference]: Without dead ends: 27897 [2023-12-16 01:19:51,424 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 01:19:51,425 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 160 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 665 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 665 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 01:19:51,425 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 121 Invalid, 678 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 665 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 01:19:51,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27897 states. [2023-12-16 01:19:51,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27897 to 25853. [2023-12-16 01:19:51,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25853 states, 25852 states have (on average 1.1790963948630666) internal successors, (30482), 25852 states have internal predecessors, (30482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:19:51,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25853 states to 25853 states and 30482 transitions. [2023-12-16 01:19:51,851 INFO L78 Accepts]: Start accepts. Automaton has 25853 states and 30482 transitions. Word has length 268 [2023-12-16 01:19:51,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:19:51,852 INFO L495 AbstractCegarLoop]: Abstraction has 25853 states and 30482 transitions. [2023-12-16 01:19:51,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.66666666666667) internal successors, (263), 2 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:19:51,852 INFO L276 IsEmpty]: Start isEmpty. Operand 25853 states and 30482 transitions. [2023-12-16 01:19:51,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2023-12-16 01:19:51,876 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:19:51,876 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:19:51,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-16 01:19:51,876 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:19:51,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:19:51,877 INFO L85 PathProgramCache]: Analyzing trace with hash -823151810, now seen corresponding path program 1 times [2023-12-16 01:19:51,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:19:51,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875439354] [2023-12-16 01:19:51,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:19:51,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:19:51,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:19:52,108 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 110 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2023-12-16 01:19:52,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:19:52,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875439354] [2023-12-16 01:19:52,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875439354] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:19:52,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:19:52,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 01:19:52,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136220687] [2023-12-16 01:19:52,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:19:52,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 01:19:52,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:19:52,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 01:19:52,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 01:19:52,110 INFO L87 Difference]: Start difference. First operand 25853 states and 30482 transitions. Second operand has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:19:52,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:19:52,851 INFO L93 Difference]: Finished difference Result 53738 states and 63202 transitions. [2023-12-16 01:19:52,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 01:19:52,853 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 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 277 [2023-12-16 01:19:52,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:19:52,899 INFO L225 Difference]: With dead ends: 53738 [2023-12-16 01:19:52,899 INFO L226 Difference]: Without dead ends: 29310 [2023-12-16 01:19:52,918 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 [2023-12-16 01:19:52,918 INFO L413 NwaCegarLoop]: 341 mSDtfsCounter, 184 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 533 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 353 SdHoareTripleChecker+Invalid, 650 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 533 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-16 01:19:52,918 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 353 Invalid, 650 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 533 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-16 01:19:53,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29310 states. [2023-12-16 01:19:53,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29310 to 28492. [2023-12-16 01:19:53,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28492 states, 28491 states have (on average 1.1665438208557088) internal successors, (33236), 28491 states have internal predecessors, (33236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:19:53,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28492 states to 28492 states and 33236 transitions. [2023-12-16 01:19:53,363 INFO L78 Accepts]: Start accepts. Automaton has 28492 states and 33236 transitions. Word has length 277 [2023-12-16 01:19:53,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:19:53,363 INFO L495 AbstractCegarLoop]: Abstraction has 28492 states and 33236 transitions. [2023-12-16 01:19:53,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:19:53,363 INFO L276 IsEmpty]: Start isEmpty. Operand 28492 states and 33236 transitions. [2023-12-16 01:19:53,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2023-12-16 01:19:53,382 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:19:53,382 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:19:53,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-16 01:19:53,383 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:19:53,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:19:53,383 INFO L85 PathProgramCache]: Analyzing trace with hash 1117756785, now seen corresponding path program 1 times [2023-12-16 01:19:53,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:19:53,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729573076] [2023-12-16 01:19:53,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:19:53,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:19:53,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:19:53,601 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 01:19:53,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:19:53,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729573076] [2023-12-16 01:19:53,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729573076] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:19:53,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:19:53,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 01:19:53,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559793628] [2023-12-16 01:19:53,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:19:53,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 01:19:53,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:19:53,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 01:19:53,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-16 01:19:53,603 INFO L87 Difference]: Start difference. First operand 28492 states and 33236 transitions. Second operand has 4 states, 4 states have (on average 72.25) internal successors, (289), 3 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:19:54,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:19:54,719 INFO L93 Difference]: Finished difference Result 52923 states and 61837 transitions. [2023-12-16 01:19:54,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 01:19:54,719 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 72.25) internal successors, (289), 3 states have internal predecessors, (289), 0 states have call successors, (0), 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 289 [2023-12-16 01:19:54,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:19:54,763 INFO L225 Difference]: With dead ends: 52923 [2023-12-16 01:19:54,763 INFO L226 Difference]: Without dead ends: 29319 [2023-12-16 01:19:54,777 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-16 01:19:54,778 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 335 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 1089 mSolverCounterSat, 233 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 335 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 1322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 233 IncrementalHoareTripleChecker+Valid, 1089 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-16 01:19:54,778 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [335 Valid, 79 Invalid, 1322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [233 Valid, 1089 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-16 01:19:54,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29319 states. [2023-12-16 01:19:55,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29319 to 28292. [2023-12-16 01:19:55,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28292 states, 28291 states have (on average 1.1119790746173694) internal successors, (31459), 28291 states have internal predecessors, (31459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:19:55,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28292 states to 28292 states and 31459 transitions. [2023-12-16 01:19:55,086 INFO L78 Accepts]: Start accepts. Automaton has 28292 states and 31459 transitions. Word has length 289 [2023-12-16 01:19:55,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:19:55,086 INFO L495 AbstractCegarLoop]: Abstraction has 28292 states and 31459 transitions. [2023-12-16 01:19:55,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.25) internal successors, (289), 3 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:19:55,086 INFO L276 IsEmpty]: Start isEmpty. Operand 28292 states and 31459 transitions. [2023-12-16 01:19:55,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2023-12-16 01:19:55,103 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:19:55,103 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:19:55,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-16 01:19:55,103 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:19:55,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:19:55,104 INFO L85 PathProgramCache]: Analyzing trace with hash -2095846115, now seen corresponding path program 1 times [2023-12-16 01:19:55,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:19:55,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667924324] [2023-12-16 01:19:55,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:19:55,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:19:55,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:19:55,365 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2023-12-16 01:19:55,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:19:55,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667924324] [2023-12-16 01:19:55,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667924324] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:19:55,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:19:55,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 01:19:55,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49577228] [2023-12-16 01:19:55,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:19:55,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 01:19:55,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:19:55,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 01:19:55,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 01:19:55,367 INFO L87 Difference]: Start difference. First operand 28292 states and 31459 transitions. Second operand has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 2 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:19:56,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:19:56,114 INFO L93 Difference]: Finished difference Result 66974 states and 74878 transitions. [2023-12-16 01:19:56,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 01:19:56,114 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 2 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 291 [2023-12-16 01:19:56,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:19:56,165 INFO L225 Difference]: With dead ends: 66974 [2023-12-16 01:19:56,165 INFO L226 Difference]: Without dead ends: 39904 [2023-12-16 01:19:56,188 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 01:19:56,188 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 200 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 581 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 01:19:56,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 99 Invalid, 593 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 581 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 01:19:56,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39904 states. [2023-12-16 01:19:56,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39904 to 39685. [2023-12-16 01:19:56,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39685 states, 39684 states have (on average 1.1194436044753553) internal successors, (44424), 39684 states have internal predecessors, (44424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:19:56,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39685 states to 39685 states and 44424 transitions. [2023-12-16 01:19:56,743 INFO L78 Accepts]: Start accepts. Automaton has 39685 states and 44424 transitions. Word has length 291 [2023-12-16 01:19:56,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:19:56,743 INFO L495 AbstractCegarLoop]: Abstraction has 39685 states and 44424 transitions. [2023-12-16 01:19:56,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 2 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:19:56,743 INFO L276 IsEmpty]: Start isEmpty. Operand 39685 states and 44424 transitions. [2023-12-16 01:19:56,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2023-12-16 01:19:56,872 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:19:56,872 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:19:56,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-16 01:19:56,872 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:19:56,873 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:19:56,873 INFO L85 PathProgramCache]: Analyzing trace with hash -1357004408, now seen corresponding path program 1 times [2023-12-16 01:19:56,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:19:56,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212508691] [2023-12-16 01:19:56,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:19:56,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:19:56,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:19:57,303 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 111 proven. 6 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2023-12-16 01:19:57,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:19:57,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212508691] [2023-12-16 01:19:57,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212508691] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 01:19:57,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [612978318] [2023-12-16 01:19:57,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:19:57,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 01:19:57,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 01:19:57,330 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 01:19:57,333 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-16 01:19:57,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:19:57,570 INFO L262 TraceCheckSpWp]: Trace formula consists of 571 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 01:19:57,581 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 01:19:57,802 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2023-12-16 01:19:57,802 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 01:19:57,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [612978318] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:19:57,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 01:19:57,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-12-16 01:19:57,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625715123] [2023-12-16 01:19:57,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:19:57,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 01:19:57,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:19:57,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 01:19:57,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 01:19:57,804 INFO L87 Difference]: Start difference. First operand 39685 states and 44424 transitions. Second operand has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:19:58,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:19:58,464 INFO L93 Difference]: Finished difference Result 72660 states and 81215 transitions. [2023-12-16 01:19:58,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 01:19:58,465 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 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 300 [2023-12-16 01:19:58,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:19:58,507 INFO L225 Difference]: With dead ends: 72660 [2023-12-16 01:19:58,507 INFO L226 Difference]: Without dead ends: 37857 [2023-12-16 01:19:58,515 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 299 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 01:19:58,516 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 42 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 515 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 01:19:58,516 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 92 Invalid, 561 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 515 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 01:19:58,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37857 states. [2023-12-16 01:19:58,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37857 to 32970. [2023-12-16 01:19:58,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32970 states, 32969 states have (on average 1.1095271315478177) internal successors, (36580), 32969 states have internal predecessors, (36580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:19:58,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32970 states to 32970 states and 36580 transitions. [2023-12-16 01:19:58,927 INFO L78 Accepts]: Start accepts. Automaton has 32970 states and 36580 transitions. Word has length 300 [2023-12-16 01:19:58,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:19:58,927 INFO L495 AbstractCegarLoop]: Abstraction has 32970 states and 36580 transitions. [2023-12-16 01:19:58,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:19:58,927 INFO L276 IsEmpty]: Start isEmpty. Operand 32970 states and 36580 transitions. [2023-12-16 01:19:58,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2023-12-16 01:19:58,946 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:19:58,946 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:19:58,964 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-16 01:19:59,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-16 01:19:59,165 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:19:59,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:19:59,165 INFO L85 PathProgramCache]: Analyzing trace with hash -1259861417, now seen corresponding path program 1 times [2023-12-16 01:19:59,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:19:59,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283333401] [2023-12-16 01:19:59,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:19:59,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:19:59,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:19:59,687 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 131 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 01:19:59,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:19:59,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283333401] [2023-12-16 01:19:59,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283333401] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 01:19:59,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [434864100] [2023-12-16 01:19:59,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:19:59,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 01:19:59,688 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 01:19:59,689 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 01:19:59,693 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-16 01:19:59,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:19:59,853 INFO L262 TraceCheckSpWp]: Trace formula consists of 509 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 01:19:59,867 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 01:19:59,989 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-12-16 01:19:59,989 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 01:19:59,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [434864100] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:19:59,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 01:19:59,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2023-12-16 01:19:59,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433998767] [2023-12-16 01:19:59,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:19:59,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 01:19:59,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:19:59,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 01:19:59,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 01:19:59,991 INFO L87 Difference]: Start difference. First operand 32970 states and 36580 transitions. Second operand has 3 states, 3 states have (on average 97.0) internal successors, (291), 2 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:20:00,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:20:00,642 INFO L93 Difference]: Finished difference Result 75902 states and 84380 transitions. [2023-12-16 01:20:00,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 01:20:00,642 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 97.0) internal successors, (291), 2 states have internal predecessors, (291), 0 states have call successors, (0), 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 319 [2023-12-16 01:20:00,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:20:00,692 INFO L225 Difference]: With dead ends: 75902 [2023-12-16 01:20:00,692 INFO L226 Difference]: Without dead ends: 43950 [2023-12-16 01:20:00,717 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 318 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 01:20:00,718 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 143 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 566 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 01:20:00,718 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 105 Invalid, 598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 566 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 01:20:00,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43950 states. [2023-12-16 01:20:01,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43950 to 42726. [2023-12-16 01:20:01,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42726 states, 42725 states have (on average 1.1046225863077823) internal successors, (47195), 42725 states have internal predecessors, (47195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:20:01,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42726 states to 42726 states and 47195 transitions. [2023-12-16 01:20:01,219 INFO L78 Accepts]: Start accepts. Automaton has 42726 states and 47195 transitions. Word has length 319 [2023-12-16 01:20:01,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:20:01,220 INFO L495 AbstractCegarLoop]: Abstraction has 42726 states and 47195 transitions. [2023-12-16 01:20:01,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 97.0) internal successors, (291), 2 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:20:01,220 INFO L276 IsEmpty]: Start isEmpty. Operand 42726 states and 47195 transitions. [2023-12-16 01:20:01,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2023-12-16 01:20:01,420 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:20:01,420 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:20:01,460 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-16 01:20:01,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-12-16 01:20:01,642 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:20:01,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:20:01,642 INFO L85 PathProgramCache]: Analyzing trace with hash 2086042724, now seen corresponding path program 1 times [2023-12-16 01:20:01,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:20:01,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649487138] [2023-12-16 01:20:01,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:20:01,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:20:01,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:20:01,963 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 140 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 01:20:01,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:20:01,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649487138] [2023-12-16 01:20:01,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649487138] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 01:20:01,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [149967766] [2023-12-16 01:20:01,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:20:01,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 01:20:01,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 01:20:01,968 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 01:20:02,008 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-16 01:20:02,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:20:02,124 INFO L262 TraceCheckSpWp]: Trace formula consists of 543 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 01:20:02,128 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 01:20:02,246 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 140 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2023-12-16 01:20:02,246 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 01:20:02,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [149967766] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:20:02,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 01:20:02,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2023-12-16 01:20:02,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79757860] [2023-12-16 01:20:02,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:20:02,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 01:20:02,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:20:02,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 01:20:02,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 01:20:02,248 INFO L87 Difference]: Start difference. First operand 42726 states and 47195 transitions. Second operand has 3 states, 3 states have (on average 95.0) internal successors, (285), 2 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:20:02,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:20:02,635 INFO L93 Difference]: Finished difference Result 98275 states and 108489 transitions. [2023-12-16 01:20:02,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 01:20:02,636 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 95.0) internal successors, (285), 2 states have internal predecessors, (285), 0 states have call successors, (0), 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 328 [2023-12-16 01:20:02,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:20:02,717 INFO L225 Difference]: With dead ends: 98275 [2023-12-16 01:20:02,717 INFO L226 Difference]: Without dead ends: 64500 [2023-12-16 01:20:02,746 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 327 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 01:20:02,747 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 201 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 478 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 01:20:02,747 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 478 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 01:20:02,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64500 states. [2023-12-16 01:20:03,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64500 to 64498. [2023-12-16 01:20:03,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64498 states, 64497 states have (on average 1.1001752019473774) internal successors, (70958), 64497 states have internal predecessors, (70958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:20:03,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64498 states to 64498 states and 70958 transitions. [2023-12-16 01:20:03,598 INFO L78 Accepts]: Start accepts. Automaton has 64498 states and 70958 transitions. Word has length 328 [2023-12-16 01:20:03,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:20:03,598 INFO L495 AbstractCegarLoop]: Abstraction has 64498 states and 70958 transitions. [2023-12-16 01:20:03,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.0) internal successors, (285), 2 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:20:03,598 INFO L276 IsEmpty]: Start isEmpty. Operand 64498 states and 70958 transitions. [2023-12-16 01:20:03,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2023-12-16 01:20:03,627 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:20:03,627 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:20:03,638 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-16 01:20:03,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 01:20:03,841 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:20:03,841 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:20:03,841 INFO L85 PathProgramCache]: Analyzing trace with hash 1422589965, now seen corresponding path program 1 times [2023-12-16 01:20:03,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:20:03,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551260261] [2023-12-16 01:20:03,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:20:03,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:20:04,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:20:04,401 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 111 proven. 6 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2023-12-16 01:20:04,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:20:04,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551260261] [2023-12-16 01:20:04,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551260261] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 01:20:04,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1123431788] [2023-12-16 01:20:04,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:20:04,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 01:20:04,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 01:20:04,402 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 01:20:04,440 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-16 01:20:04,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:20:04,554 INFO L262 TraceCheckSpWp]: Trace formula consists of 608 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 01:20:04,557 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 01:20:04,719 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 142 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2023-12-16 01:20:04,719 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 01:20:04,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1123431788] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:20:04,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 01:20:04,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-12-16 01:20:04,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189589185] [2023-12-16 01:20:04,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:20:04,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 01:20:04,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:20:04,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 01:20:04,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 01:20:04,720 INFO L87 Difference]: Start difference. First operand 64498 states and 70958 transitions. Second operand has 3 states, 3 states have (on average 88.0) internal successors, (264), 3 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:20:05,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:20:05,477 INFO L93 Difference]: Finished difference Result 121680 states and 134128 transitions. [2023-12-16 01:20:05,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 01:20:05,478 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 88.0) internal successors, (264), 3 states have internal predecessors, (264), 0 states have call successors, (0), 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 332 [2023-12-16 01:20:05,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:20:05,555 INFO L225 Difference]: With dead ends: 121680 [2023-12-16 01:20:05,555 INFO L226 Difference]: Without dead ends: 58403 [2023-12-16 01:20:05,579 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 331 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 01:20:05,580 INFO L413 NwaCegarLoop]: 264 mSDtfsCounter, 76 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 530 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-16 01:20:05,580 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 272 Invalid, 548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 530 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-16 01:20:05,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58403 states. [2023-12-16 01:20:06,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58403 to 58394. [2023-12-16 01:20:06,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58394 states, 58393 states have (on average 1.096073159454044) internal successors, (64003), 58393 states have internal predecessors, (64003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:20:06,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58394 states to 58394 states and 64003 transitions. [2023-12-16 01:20:06,550 INFO L78 Accepts]: Start accepts. Automaton has 58394 states and 64003 transitions. Word has length 332 [2023-12-16 01:20:06,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:20:06,550 INFO L495 AbstractCegarLoop]: Abstraction has 58394 states and 64003 transitions. [2023-12-16 01:20:06,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 88.0) internal successors, (264), 3 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:20:06,551 INFO L276 IsEmpty]: Start isEmpty. Operand 58394 states and 64003 transitions. [2023-12-16 01:20:06,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2023-12-16 01:20:06,582 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:20:06,582 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:20:06,587 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-16 01:20:06,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-16 01:20:06,788 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:20:06,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:20:06,789 INFO L85 PathProgramCache]: Analyzing trace with hash 1207981039, now seen corresponding path program 1 times [2023-12-16 01:20:06,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:20:06,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071930972] [2023-12-16 01:20:06,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:20:06,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:20:06,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:20:06,979 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 163 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-12-16 01:20:06,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:20:06,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071930972] [2023-12-16 01:20:06,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071930972] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:20:06,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:20:06,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-16 01:20:06,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804818000] [2023-12-16 01:20:06,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:20:06,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 01:20:06,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:20:06,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 01:20:06,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 01:20:06,981 INFO L87 Difference]: Start difference. First operand 58394 states and 64003 transitions. Second operand has 3 states, 3 states have (on average 104.66666666666667) internal successors, (314), 2 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:20:07,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:20:07,525 INFO L93 Difference]: Finished difference Result 153823 states and 168545 transitions. [2023-12-16 01:20:07,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 01:20:07,526 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 104.66666666666667) internal successors, (314), 2 states have internal predecessors, (314), 0 states have call successors, (0), 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 342 [2023-12-16 01:20:07,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:20:07,629 INFO L225 Difference]: With dead ends: 153823 [2023-12-16 01:20:07,630 INFO L226 Difference]: Without dead ends: 96853 [2023-12-16 01:20:07,677 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 01:20:07,677 INFO L413 NwaCegarLoop]: 241 mSDtfsCounter, 179 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 472 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 01:20:07,678 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 472 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 01:20:07,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96853 states. [2023-12-16 01:20:09,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96853 to 96840. [2023-12-16 01:20:09,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96840 states, 96839 states have (on average 1.0945693367341671) internal successors, (105997), 96839 states have internal predecessors, (105997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:20:09,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96840 states to 96840 states and 105997 transitions. [2023-12-16 01:20:09,206 INFO L78 Accepts]: Start accepts. Automaton has 96840 states and 105997 transitions. Word has length 342 [2023-12-16 01:20:09,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:20:09,206 INFO L495 AbstractCegarLoop]: Abstraction has 96840 states and 105997 transitions. [2023-12-16 01:20:09,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 104.66666666666667) internal successors, (314), 2 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:20:09,206 INFO L276 IsEmpty]: Start isEmpty. Operand 96840 states and 105997 transitions. [2023-12-16 01:20:09,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2023-12-16 01:20:09,237 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:20:09,237 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:20:09,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-16 01:20:09,238 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:20:09,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:20:09,238 INFO L85 PathProgramCache]: Analyzing trace with hash 1083723364, now seen corresponding path program 1 times [2023-12-16 01:20:09,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:20:09,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230555751] [2023-12-16 01:20:09,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:20:09,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:20:09,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:20:09,847 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 136 proven. 6 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2023-12-16 01:20:09,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:20:09,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230555751] [2023-12-16 01:20:09,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230555751] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 01:20:09,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [811052681] [2023-12-16 01:20:09,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:20:09,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 01:20:09,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 01:20:09,858 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 01:20:09,878 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-16 01:20:10,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:20:10,146 INFO L262 TraceCheckSpWp]: Trace formula consists of 666 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-16 01:20:10,151 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 01:20:10,313 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 161 proven. 0 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2023-12-16 01:20:10,313 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 01:20:10,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [811052681] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:20:10,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 01:20:10,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-12-16 01:20:10,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471437228] [2023-12-16 01:20:10,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:20:10,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 01:20:10,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:20:10,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 01:20:10,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 01:20:10,315 INFO L87 Difference]: Start difference. First operand 96840 states and 105997 transitions. Second operand has 3 states, 3 states have (on average 88.33333333333333) internal successors, (265), 3 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:20:11,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:20:11,372 INFO L93 Difference]: Finished difference Result 185190 states and 202527 transitions. [2023-12-16 01:20:11,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 01:20:11,373 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 88.33333333333333) internal successors, (265), 3 states have internal predecessors, (265), 0 states have call successors, (0), 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 351 [2023-12-16 01:20:11,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:20:11,506 INFO L225 Difference]: With dead ends: 185190 [2023-12-16 01:20:11,506 INFO L226 Difference]: Without dead ends: 88554 [2023-12-16 01:20:11,548 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 353 GetRequests, 350 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 01:20:11,550 INFO L413 NwaCegarLoop]: 308 mSDtfsCounter, 37 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 559 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 322 SdHoareTripleChecker+Invalid, 609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 01:20:11,550 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 322 Invalid, 609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 559 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 01:20:11,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88554 states. [2023-12-16 01:20:12,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88554 to 88507. [2023-12-16 01:20:12,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88507 states, 88506 states have (on average 1.0882087090140782) internal successors, (96313), 88506 states have internal predecessors, (96313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:20:12,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88507 states to 88507 states and 96313 transitions. [2023-12-16 01:20:12,758 INFO L78 Accepts]: Start accepts. Automaton has 88507 states and 96313 transitions. Word has length 351 [2023-12-16 01:20:12,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:20:12,759 INFO L495 AbstractCegarLoop]: Abstraction has 88507 states and 96313 transitions. [2023-12-16 01:20:12,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 88.33333333333333) internal successors, (265), 3 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:20:12,759 INFO L276 IsEmpty]: Start isEmpty. Operand 88507 states and 96313 transitions. [2023-12-16 01:20:13,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2023-12-16 01:20:13,120 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:20:13,121 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:20:13,172 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-16 01:20:13,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 01:20:13,345 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:20:13,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:20:13,346 INFO L85 PathProgramCache]: Analyzing trace with hash 1275896315, now seen corresponding path program 1 times [2023-12-16 01:20:13,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:20:13,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260884941] [2023-12-16 01:20:13,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:20:13,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:20:13,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:20:14,804 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 213 proven. 58 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-16 01:20:14,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:20:14,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260884941] [2023-12-16 01:20:14,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260884941] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 01:20:14,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [588594452] [2023-12-16 01:20:14,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:20:14,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 01:20:14,805 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 01:20:14,818 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 01:20:14,848 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-16 01:20:15,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:20:15,013 INFO L262 TraceCheckSpWp]: Trace formula consists of 609 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 01:20:15,018 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 01:20:15,241 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 271 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-12-16 01:20:15,241 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 01:20:15,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [588594452] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:20:15,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 01:20:15,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2023-12-16 01:20:15,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352620993] [2023-12-16 01:20:15,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:20:15,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 01:20:15,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:20:15,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 01:20:15,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-16 01:20:15,243 INFO L87 Difference]: Start difference. First operand 88507 states and 96313 transitions. Second operand has 4 states, 4 states have (on average 85.75) internal successors, (343), 3 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:20:16,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:20:16,450 INFO L93 Difference]: Finished difference Result 181348 states and 197497 transitions. [2023-12-16 01:20:16,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 01:20:16,451 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 85.75) internal successors, (343), 3 states have internal predecessors, (343), 0 states have call successors, (0), 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 372 [2023-12-16 01:20:16,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:20:16,584 INFO L225 Difference]: With dead ends: 181348 [2023-12-16 01:20:16,584 INFO L226 Difference]: Without dead ends: 94263 [2023-12-16 01:20:16,618 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 376 GetRequests, 370 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-16 01:20:16,619 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 412 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 805 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 412 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 914 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 805 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-16 01:20:16,619 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [412 Valid, 94 Invalid, 914 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 805 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-16 01:20:16,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94263 states. [2023-12-16 01:20:17,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94263 to 90738. [2023-12-16 01:20:18,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90738 states, 90737 states have (on average 1.079658794097226) internal successors, (97965), 90737 states have internal predecessors, (97965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:20:18,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90738 states to 90738 states and 97965 transitions. [2023-12-16 01:20:18,136 INFO L78 Accepts]: Start accepts. Automaton has 90738 states and 97965 transitions. Word has length 372 [2023-12-16 01:20:18,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:20:18,137 INFO L495 AbstractCegarLoop]: Abstraction has 90738 states and 97965 transitions. [2023-12-16 01:20:18,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 85.75) internal successors, (343), 3 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:20:18,137 INFO L276 IsEmpty]: Start isEmpty. Operand 90738 states and 97965 transitions. [2023-12-16 01:20:18,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2023-12-16 01:20:18,170 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:20:18,170 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:20:18,178 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-16 01:20:18,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 01:20:18,377 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:20:18,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:20:18,378 INFO L85 PathProgramCache]: Analyzing trace with hash -486748211, now seen corresponding path program 1 times [2023-12-16 01:20:18,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:20:18,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182824263] [2023-12-16 01:20:18,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:20:18,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:20:18,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:20:19,171 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 230 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 01:20:19,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:20:19,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182824263] [2023-12-16 01:20:19,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182824263] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 01:20:19,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [903201455] [2023-12-16 01:20:19,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:20:19,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 01:20:19,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 01:20:19,172 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 01:20:19,204 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-16 01:20:19,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:20:19,374 INFO L262 TraceCheckSpWp]: Trace formula consists of 607 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 01:20:19,378 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 01:20:19,432 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 236 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-16 01:20:19,433 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 01:20:19,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [903201455] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:20:19,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 01:20:19,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2023-12-16 01:20:19,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800302141] [2023-12-16 01:20:19,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:20:19,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 01:20:19,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:20:19,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 01:20:19,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-16 01:20:19,434 INFO L87 Difference]: Start difference. First operand 90738 states and 97965 transitions. Second operand has 3 states, 3 states have (on average 123.66666666666667) internal successors, (371), 3 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:20:20,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:20:20,423 INFO L93 Difference]: Finished difference Result 166818 states and 179890 transitions. [2023-12-16 01:20:20,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 01:20:20,424 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 123.66666666666667) internal successors, (371), 3 states have internal predecessors, (371), 0 states have call successors, (0), 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 376 [2023-12-16 01:20:20,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:20:20,520 INFO L225 Difference]: With dead ends: 166818 [2023-12-16 01:20:20,520 INFO L226 Difference]: Without dead ends: 77502 [2023-12-16 01:20:20,546 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 379 GetRequests, 375 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-16 01:20:20,547 INFO L413 NwaCegarLoop]: 287 mSDtfsCounter, 195 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 483 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 483 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-16 01:20:20,547 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [195 Valid, 302 Invalid, 571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 483 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-16 01:20:20,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77502 states. [2023-12-16 01:20:21,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77502 to 76681. [2023-12-16 01:20:21,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76681 states, 76680 states have (on average 1.0601199791340636) internal successors, (81290), 76680 states have internal predecessors, (81290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:20:21,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76681 states to 76681 states and 81290 transitions. [2023-12-16 01:20:21,684 INFO L78 Accepts]: Start accepts. Automaton has 76681 states and 81290 transitions. Word has length 376 [2023-12-16 01:20:21,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:20:21,684 INFO L495 AbstractCegarLoop]: Abstraction has 76681 states and 81290 transitions. [2023-12-16 01:20:21,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 123.66666666666667) internal successors, (371), 3 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:20:21,684 INFO L276 IsEmpty]: Start isEmpty. Operand 76681 states and 81290 transitions. [2023-12-16 01:20:21,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2023-12-16 01:20:21,705 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:20:21,705 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:20:21,710 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-12-16 01:20:21,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 01:20:21,911 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:20:21,911 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:20:21,912 INFO L85 PathProgramCache]: Analyzing trace with hash -431502915, now seen corresponding path program 1 times [2023-12-16 01:20:21,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:20:21,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199043912] [2023-12-16 01:20:21,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:20:21,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:20:21,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:20:22,459 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 221 proven. 9 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2023-12-16 01:20:22,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:20:22,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199043912] [2023-12-16 01:20:22,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199043912] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 01:20:22,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1213472751] [2023-12-16 01:20:22,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:20:22,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 01:20:22,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 01:20:22,461 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 01:20:22,496 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-16 01:20:22,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:20:22,628 INFO L262 TraceCheckSpWp]: Trace formula consists of 698 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-16 01:20:22,632 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 01:20:22,648 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 224 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-12-16 01:20:22,648 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 01:20:22,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1213472751] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:20:22,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 01:20:22,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2023-12-16 01:20:22,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479235645] [2023-12-16 01:20:22,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:20:22,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 01:20:22,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:20:22,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 01:20:22,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-16 01:20:22,650 INFO L87 Difference]: Start difference. First operand 76681 states and 81290 transitions. Second operand has 3 states, 3 states have (on average 112.33333333333333) internal successors, (337), 3 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:20:23,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:20:23,470 INFO L93 Difference]: Finished difference Result 148708 states and 157612 transitions. [2023-12-16 01:20:23,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 01:20:23,471 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 112.33333333333333) internal successors, (337), 3 states have internal predecessors, (337), 0 states have call successors, (0), 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 388 [2023-12-16 01:20:23,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:20:23,555 INFO L225 Difference]: With dead ends: 148708 [2023-12-16 01:20:23,555 INFO L226 Difference]: Without dead ends: 73449 [2023-12-16 01:20:23,599 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 391 GetRequests, 387 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-16 01:20:23,601 INFO L413 NwaCegarLoop]: 310 mSDtfsCounter, 210 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 522 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 522 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 01:20:23,601 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 325 Invalid, 576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 522 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 01:20:23,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73449 states. [2023-12-16 01:20:24,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73449 to 69162. [2023-12-16 01:20:24,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69162 states, 69161 states have (on average 1.054062260522549) internal successors, (72900), 69161 states have internal predecessors, (72900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:20:24,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69162 states to 69162 states and 72900 transitions. [2023-12-16 01:20:24,596 INFO L78 Accepts]: Start accepts. Automaton has 69162 states and 72900 transitions. Word has length 388 [2023-12-16 01:20:24,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:20:24,597 INFO L495 AbstractCegarLoop]: Abstraction has 69162 states and 72900 transitions. [2023-12-16 01:20:24,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 112.33333333333333) internal successors, (337), 3 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:20:24,597 INFO L276 IsEmpty]: Start isEmpty. Operand 69162 states and 72900 transitions. [2023-12-16 01:20:24,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 397 [2023-12-16 01:20:24,615 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:20:24,615 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:20:24,620 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-12-16 01:20:24,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-12-16 01:20:24,818 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:20:24,818 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:20:24,818 INFO L85 PathProgramCache]: Analyzing trace with hash -1136022166, now seen corresponding path program 1 times [2023-12-16 01:20:24,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:20:24,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219481660] [2023-12-16 01:20:24,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:20:24,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:20:24,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:20:25,318 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 236 proven. 30 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-12-16 01:20:25,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:20:25,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219481660] [2023-12-16 01:20:25,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219481660] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 01:20:25,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1745518268] [2023-12-16 01:20:25,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:20:25,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 01:20:25,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 01:20:25,320 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 01:20:25,322 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-16 01:20:25,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:20:25,492 INFO L262 TraceCheckSpWp]: Trace formula consists of 642 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-16 01:20:25,497 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 01:20:25,921 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 308 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-16 01:20:25,922 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 01:20:25,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1745518268] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:20:25,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 01:20:25,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [3] total 6 [2023-12-16 01:20:25,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630234201] [2023-12-16 01:20:25,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:20:25,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 01:20:25,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:20:25,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 01:20:25,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-16 01:20:25,923 INFO L87 Difference]: Start difference. First operand 69162 states and 72900 transitions. Second operand has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:20:27,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:20:27,073 INFO L93 Difference]: Finished difference Result 167010 states and 176573 transitions. [2023-12-16 01:20:27,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 01:20:27,074 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 0 states have call successors, (0), 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 396 [2023-12-16 01:20:27,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:20:27,196 INFO L225 Difference]: With dead ends: 167010 [2023-12-16 01:20:27,196 INFO L226 Difference]: Without dead ends: 96428 [2023-12-16 01:20:27,246 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 398 GetRequests, 394 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-16 01:20:27,247 INFO L413 NwaCegarLoop]: 298 mSDtfsCounter, 349 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 787 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 349 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 873 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 787 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-16 01:20:27,248 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [349 Valid, 320 Invalid, 873 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 787 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-16 01:20:27,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96428 states. [2023-12-16 01:20:28,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96428 to 89912. [2023-12-16 01:20:28,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89912 states, 89911 states have (on average 1.0514731234220507) internal successors, (94539), 89911 states have internal predecessors, (94539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:20:28,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89912 states to 89912 states and 94539 transitions. [2023-12-16 01:20:28,767 INFO L78 Accepts]: Start accepts. Automaton has 89912 states and 94539 transitions. Word has length 396 [2023-12-16 01:20:28,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:20:28,776 INFO L495 AbstractCegarLoop]: Abstraction has 89912 states and 94539 transitions. [2023-12-16 01:20:28,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:20:28,776 INFO L276 IsEmpty]: Start isEmpty. Operand 89912 states and 94539 transitions. [2023-12-16 01:20:28,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 407 [2023-12-16 01:20:28,828 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:20:28,828 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:20:28,836 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-16 01:20:29,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-12-16 01:20:29,034 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:20:29,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:20:29,034 INFO L85 PathProgramCache]: Analyzing trace with hash -1065162880, now seen corresponding path program 1 times [2023-12-16 01:20:29,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:20:29,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974293639] [2023-12-16 01:20:29,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:20:29,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:20:29,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:20:29,367 INFO L134 CoverageAnalysis]: Checked inductivity of 353 backedges. 317 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-12-16 01:20:29,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:20:29,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974293639] [2023-12-16 01:20:29,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974293639] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:20:29,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 01:20:29,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 01:20:29,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835104421] [2023-12-16 01:20:29,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:20:29,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 01:20:29,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:20:29,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 01:20:29,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 01:20:29,369 INFO L87 Difference]: Start difference. First operand 89912 states and 94539 transitions. Second operand has 3 states, 3 states have (on average 124.0) internal successors, (372), 3 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:20:30,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 01:20:30,320 INFO L93 Difference]: Finished difference Result 183694 states and 193062 transitions. [2023-12-16 01:20:30,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 01:20:30,321 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 124.0) internal successors, (372), 3 states have internal predecessors, (372), 0 states have call successors, (0), 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 406 [2023-12-16 01:20:30,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 01:20:30,440 INFO L225 Difference]: With dead ends: 183694 [2023-12-16 01:20:30,440 INFO L226 Difference]: Without dead ends: 94392 [2023-12-16 01:20:30,501 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 01:20:30,505 INFO L413 NwaCegarLoop]: 308 mSDtfsCounter, 161 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 505 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 322 SdHoareTripleChecker+Invalid, 541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-16 01:20:30,506 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 322 Invalid, 541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 505 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-16 01:20:30,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94392 states. [2023-12-16 01:20:31,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94392 to 93566. [2023-12-16 01:20:31,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93566 states, 93565 states have (on average 1.0481590338267515) internal successors, (98071), 93565 states have internal predecessors, (98071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:20:32,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93566 states to 93566 states and 98071 transitions. [2023-12-16 01:20:32,095 INFO L78 Accepts]: Start accepts. Automaton has 93566 states and 98071 transitions. Word has length 406 [2023-12-16 01:20:32,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 01:20:32,095 INFO L495 AbstractCegarLoop]: Abstraction has 93566 states and 98071 transitions. [2023-12-16 01:20:32,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 124.0) internal successors, (372), 3 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-16 01:20:32,096 INFO L276 IsEmpty]: Start isEmpty. Operand 93566 states and 98071 transitions. [2023-12-16 01:20:32,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 407 [2023-12-16 01:20:32,122 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 01:20:32,122 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 01:20:32,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-16 01:20:32,122 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 01:20:32,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 01:20:32,123 INFO L85 PathProgramCache]: Analyzing trace with hash 1140674958, now seen corresponding path program 1 times [2023-12-16 01:20:32,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 01:20:32,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276783536] [2023-12-16 01:20:32,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:20:32,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 01:20:32,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:20:32,615 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 254 proven. 12 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-12-16 01:20:32,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 01:20:32,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276783536] [2023-12-16 01:20:32,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276783536] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 01:20:32,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [683537906] [2023-12-16 01:20:32,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 01:20:32,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 01:20:32,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 01:20:32,617 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 01:20:32,652 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-16 01:20:32,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 01:20:32,790 INFO L262 TraceCheckSpWp]: Trace formula consists of 668 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-16 01:20:32,794 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 01:20:32,976 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 290 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-12-16 01:20:32,976 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 01:20:32,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [683537906] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 01:20:32,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 01:20:32,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-12-16 01:20:32,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458115779] [2023-12-16 01:20:32,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 01:20:32,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 01:20:32,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 01:20:32,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 01:20:32,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 01:20:32,978 INFO L87 Difference]: Start difference. First operand 93566 states and 98071 transitions. Second operand has 4 states, 4 states have (on average 90.0) internal successors, (360), 3 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2023-12-16 01:20:33,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 01:20:33,781 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 408 GetRequests, 405 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-16 01:20:33,781 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 355 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 680 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 355 SdHoareTripleChecker+Valid, 310 SdHoareTripleChecker+Invalid, 728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 680 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-16 01:20:33,781 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [355 Valid, 310 Invalid, 728 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 680 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-16 01:20:33,782 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-16 01:20:33,788 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-12-16 01:20:33,799 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 01:20:33,799 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 [2023-12-16 01:20:33,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-12-16 01:20:33,988 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (93566states) and FLOYD_HOARE automaton (currently 4 states, 4 states before enhancement),while ReachableStatesComputation was computing reachable states (49985 states constructed, input type IntersectNwa). [2023-12-16 01:20:33,992 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] [2023-12-16 01:20:33,994 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 01:20:33,996 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 01:20:33 BoogieIcfgContainer [2023-12-16 01:20:33,996 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 01:20:33,997 INFO L158 Benchmark]: Toolchain (without parser) took 57333.46ms. Allocated memory was 172.0MB in the beginning and 7.7GB in the end (delta: 7.5GB). Free memory was 104.4MB in the beginning and 4.8GB in the end (delta: -4.7GB). Peak memory consumption was 3.2GB. Max. memory is 8.0GB. [2023-12-16 01:20:33,997 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 172.0MB. Free memory was 122.4MB in the beginning and 122.3MB in the end (delta: 136.4kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 01:20:33,997 INFO L158 Benchmark]: CACSL2BoogieTranslator took 709.35ms. Allocated memory was 172.0MB in the beginning and 206.6MB in the end (delta: 34.6MB). Free memory was 104.4MB in the beginning and 126.6MB in the end (delta: -22.1MB). Peak memory consumption was 25.0MB. Max. memory is 8.0GB. [2023-12-16 01:20:33,997 INFO L158 Benchmark]: Boogie Procedure Inliner took 100.79ms. Allocated memory is still 206.6MB. Free memory was 126.6MB in the beginning and 111.4MB in the end (delta: 15.2MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2023-12-16 01:20:33,997 INFO L158 Benchmark]: Boogie Preprocessor took 178.11ms. Allocated memory is still 206.6MB. Free memory was 111.4MB in the beginning and 151.4MB in the end (delta: -40.1MB). Peak memory consumption was 24.9MB. Max. memory is 8.0GB. [2023-12-16 01:20:33,997 INFO L158 Benchmark]: RCFGBuilder took 1471.60ms. Allocated memory was 206.6MB in the beginning and 312.5MB in the end (delta: 105.9MB). Free memory was 151.4MB in the beginning and 225.2MB in the end (delta: -73.8MB). Peak memory consumption was 103.4MB. Max. memory is 8.0GB. [2023-12-16 01:20:33,997 INFO L158 Benchmark]: TraceAbstraction took 54868.68ms. Allocated memory was 312.5MB in the beginning and 7.7GB in the end (delta: 7.3GB). Free memory was 224.2MB in the beginning and 4.8GB in the end (delta: -4.6GB). Peak memory consumption was 3.1GB. Max. memory is 8.0GB. [2023-12-16 01:20:33,999 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 172.0MB. Free memory was 122.4MB in the beginning and 122.3MB in the end (delta: 136.4kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 709.35ms. Allocated memory was 172.0MB in the beginning and 206.6MB in the end (delta: 34.6MB). Free memory was 104.4MB in the beginning and 126.6MB in the end (delta: -22.1MB). Peak memory consumption was 25.0MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 100.79ms. Allocated memory is still 206.6MB. Free memory was 126.6MB in the beginning and 111.4MB in the end (delta: 15.2MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * Boogie Preprocessor took 178.11ms. Allocated memory is still 206.6MB. Free memory was 111.4MB in the beginning and 151.4MB in the end (delta: -40.1MB). Peak memory consumption was 24.9MB. Max. memory is 8.0GB. * RCFGBuilder took 1471.60ms. Allocated memory was 206.6MB in the beginning and 312.5MB in the end (delta: 105.9MB). Free memory was 151.4MB in the beginning and 225.2MB in the end (delta: -73.8MB). Peak memory consumption was 103.4MB. Max. memory is 8.0GB. * TraceAbstraction took 54868.68ms. Allocated memory was 312.5MB in the beginning and 7.7GB in the end (delta: 7.3GB). Free memory was 224.2MB in the beginning and 4.8GB in the end (delta: -4.6GB). Peak memory consumption was 3.1GB. 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: 1609]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 1609). Cancelled while NwaCegarLoop was constructing difference of abstraction (93566states) and FLOYD_HOARE automaton (currently 4 states, 4 states before enhancement),while ReachableStatesComputation was computing reachable states (49985 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 240 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 54.8s, OverallIterations: 26, TraceHistogramMax: 6, PathProgramHistogramMax: 1, EmptinessCheckTime: 1.1s, AutomataDifference: 21.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 5431 SdHoareTripleChecker+Valid, 13.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5431 mSDsluCounter, 6076 SdHoareTripleChecker+Invalid, 11.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1012 mSDsCounter, 2067 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 14800 IncrementalHoareTripleChecker+Invalid, 16867 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2067 mSolverCounterUnsat, 5064 mSDtfsCounter, 14800 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3629 GetRequests, 3576 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=96840occurred in iteration=19, InterpolantAutomatonStates: 78, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 15.2s AutomataMinimizationTime, 25 MinimizatonAttempts, 26321 StatesRemovedByMinimization, 22 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.8s SsaConstructionTime, 1.4s SatisfiabilityAnalysisTime, 10.4s InterpolantComputationTime, 11191 NumberOfCodeBlocks, 11191 NumberOfCodeBlocksAsserted, 36 NumberOfCheckSat, 11155 ConstructedInterpolants, 0 QuantifiedInterpolants, 29270 SizeOfPredicates, 0 NumberOfNonLiveVariables, 6121 ConjunctsInSsa, 29 ConjunctsInUnsatCore, 36 InterpolantComputations, 26 PerfectInterpolantSequences, 6516/6728 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