/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-20 03:08:59,639 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-20 03:08:59,701 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-20 03:08:59,705 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-20 03:08:59,705 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-20 03:08:59,728 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-20 03:08:59,728 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-20 03:08:59,729 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-20 03:08:59,729 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-20 03:08:59,732 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-20 03:08:59,732 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-20 03:08:59,732 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-20 03:08:59,733 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-20 03:08:59,734 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-20 03:08:59,734 INFO L153 SettingsManager]: * Use SBE=true [2023-12-20 03:08:59,734 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-20 03:08:59,734 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-20 03:08:59,734 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-20 03:08:59,735 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-20 03:08:59,736 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-20 03:08:59,736 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-20 03:08:59,736 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-20 03:08:59,736 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-20 03:08:59,736 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-20 03:08:59,737 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-20 03:08:59,737 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-20 03:08:59,737 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-20 03:08:59,737 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-20 03:08:59,738 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-20 03:08:59,738 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-20 03:08:59,738 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-20 03:08:59,739 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-20 03:08:59,739 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 03:08:59,739 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-20 03:08:59,739 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-20 03:08:59,739 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-20 03:08:59,739 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-20 03:08:59,740 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-20 03:08:59,740 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-20 03:08:59,740 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-20 03:08:59,740 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-20 03:08:59,740 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-20 03:08:59,740 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-20 03:08:59,740 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true [2023-12-20 03:08:59,943 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-20 03:08:59,961 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-20 03:08:59,963 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-20 03:08:59,964 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-20 03:08:59,964 INFO L274 PluginConnector]: CDTParser initialized [2023-12-20 03:08:59,965 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2023-12-20 03:09:01,022 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-20 03:09:01,171 INFO L384 CDTParser]: Found 1 translation units. [2023-12-20 03:09:01,172 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2023-12-20 03:09:01,191 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aaae47596/3bfb0f64143848e680d3ee383f066c72/FLAGc795cc06f [2023-12-20 03:09:01,200 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aaae47596/3bfb0f64143848e680d3ee383f066c72 [2023-12-20 03:09:01,202 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-20 03:09:01,203 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-20 03:09:01,204 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-20 03:09:01,204 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-20 03:09:01,207 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-20 03:09:01,208 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 03:09:01" (1/1) ... [2023-12-20 03:09:01,208 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67ba275e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:09:01, skipping insertion in model container [2023-12-20 03:09:01,208 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 03:09:01" (1/1) ... [2023-12-20 03:09:01,242 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-20 03:09:01,395 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c[7180,7193] [2023-12-20 03:09:01,409 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c[9491,9504] [2023-12-20 03:09:01,421 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 03:09:01,431 INFO L202 MainTranslator]: Completed pre-run [2023-12-20 03:09:01,460 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c[7180,7193] [2023-12-20 03:09:01,466 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c[9491,9504] [2023-12-20 03:09:01,472 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-20 03:09:01,483 INFO L206 MainTranslator]: Completed translation [2023-12-20 03:09:01,484 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:09:01 WrapperNode [2023-12-20 03:09:01,484 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-20 03:09:01,484 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-20 03:09:01,485 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-20 03:09:01,485 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-20 03:09:01,489 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:09:01" (1/1) ... [2023-12-20 03:09:01,495 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:09:01" (1/1) ... [2023-12-20 03:09:01,532 INFO L138 Inliner]: procedures = 22, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 502 [2023-12-20 03:09:01,532 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-20 03:09:01,533 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-20 03:09:01,533 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-20 03:09:01,533 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-20 03:09:01,545 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:09:01" (1/1) ... [2023-12-20 03:09:01,545 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:09:01" (1/1) ... [2023-12-20 03:09:01,556 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:09:01" (1/1) ... [2023-12-20 03:09:01,573 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]. [2023-12-20 03:09:01,573 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:09:01" (1/1) ... [2023-12-20 03:09:01,573 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:09:01" (1/1) ... [2023-12-20 03:09:01,587 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:09:01" (1/1) ... [2023-12-20 03:09:01,597 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:09:01" (1/1) ... [2023-12-20 03:09:01,599 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:09:01" (1/1) ... [2023-12-20 03:09:01,600 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:09:01" (1/1) ... [2023-12-20 03:09:01,602 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-20 03:09:01,602 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-20 03:09:01,603 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-20 03:09:01,603 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-20 03:09:01,603 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:09:01" (1/1) ... [2023-12-20 03:09:01,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-20 03:09:01,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 03:09:01,631 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) [2023-12-20 03:09:01,646 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 [2023-12-20 03:09:01,671 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-20 03:09:01,671 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-20 03:09:01,671 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-20 03:09:01,672 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-20 03:09:01,774 INFO L241 CfgBuilder]: Building ICFG [2023-12-20 03:09:01,775 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-20 03:09:02,090 INFO L282 CfgBuilder]: Performing block encoding [2023-12-20 03:09:02,113 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-20 03:09:02,113 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-20 03:09:02,113 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 03:09:02 BoogieIcfgContainer [2023-12-20 03:09:02,113 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-20 03:09:02,115 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-20 03:09:02,115 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-20 03:09:02,117 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-20 03:09:02,117 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 03:09:01" (1/3) ... [2023-12-20 03:09:02,117 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@509ec5c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 03:09:02, skipping insertion in model container [2023-12-20 03:09:02,117 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 03:09:01" (2/3) ... [2023-12-20 03:09:02,117 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@509ec5c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 03:09:02, skipping insertion in model container [2023-12-20 03:09:02,117 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 03:09:02" (3/3) ... [2023-12-20 03:09:02,118 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2023-12-20 03:09:02,129 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-20 03:09:02,129 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-20 03:09:02,156 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-20 03:09:02,160 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;@22c3e937, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-20 03:09:02,160 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-20 03:09:02,163 INFO L276 IsEmpty]: Start isEmpty. Operand has 104 states, 101 states have (on average 1.7722772277227723) internal successors, (179), 103 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:09:02,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-12-20 03:09:02,168 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:09:02,168 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] [2023-12-20 03:09:02,181 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:09:02,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:09:02,185 INFO L85 PathProgramCache]: Analyzing trace with hash -1236458848, now seen corresponding path program 1 times [2023-12-20 03:09:02,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:09:02,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749717802] [2023-12-20 03:09:02,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:09:02,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:09:02,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:09:02,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:09:02,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:09:02,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749717802] [2023-12-20 03:09:02,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749717802] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:09:02,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:09:02,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 03:09:02,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194881889] [2023-12-20 03:09:02,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:09:02,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 03:09:02,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:09:02,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 03:09:02,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 03:09:02,593 INFO L87 Difference]: Start difference. First operand has 104 states, 101 states have (on average 1.7722772277227723) internal successors, (179), 103 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:09:02,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:09:02,828 INFO L93 Difference]: Finished difference Result 408 states and 655 transitions. [2023-12-20 03:09:02,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-20 03:09:02,830 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2023-12-20 03:09:02,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:09:02,840 INFO L225 Difference]: With dead ends: 408 [2023-12-20 03:09:02,840 INFO L226 Difference]: Without dead ends: 352 [2023-12-20 03:09:02,842 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-20 03:09:02,845 INFO L413 NwaCegarLoop]: 281 mSDtfsCounter, 591 mSDsluCounter, 461 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 591 SdHoareTripleChecker+Valid, 742 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 03:09:02,845 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [591 Valid, 742 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 03:09:02,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2023-12-20 03:09:02,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 154. [2023-12-20 03:09:02,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 152 states have (on average 1.4342105263157894) internal successors, (218), 153 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) [2023-12-20 03:09:02,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 218 transitions. [2023-12-20 03:09:02,877 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 218 transitions. Word has length 47 [2023-12-20 03:09:02,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:09:02,877 INFO L495 AbstractCegarLoop]: Abstraction has 154 states and 218 transitions. [2023-12-20 03:09:02,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:09:02,878 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 218 transitions. [2023-12-20 03:09:02,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-12-20 03:09:02,879 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:09:02,879 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] [2023-12-20 03:09:02,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-20 03:09:02,879 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:09:02,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:09:02,880 INFO L85 PathProgramCache]: Analyzing trace with hash 149827959, now seen corresponding path program 1 times [2023-12-20 03:09:02,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:09:02,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499256991] [2023-12-20 03:09:02,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:09:02,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:09:02,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:09:02,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:09:02,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:09:02,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499256991] [2023-12-20 03:09:02,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499256991] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:09:02,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:09:02,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 03:09:02,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615759971] [2023-12-20 03:09:02,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:09:02,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 03:09:02,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:09:02,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 03:09:02,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:09:02,957 INFO L87 Difference]: Start difference. First operand 154 states and 218 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:09:02,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:09:02,998 INFO L93 Difference]: Finished difference Result 243 states and 351 transitions. [2023-12-20 03:09:02,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 03:09:02,999 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2023-12-20 03:09:02,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:09:03,001 INFO L225 Difference]: With dead ends: 243 [2023-12-20 03:09:03,001 INFO L226 Difference]: Without dead ends: 158 [2023-12-20 03:09:03,002 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 [2023-12-20 03:09:03,003 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 73 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:09:03,004 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 299 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:09:03,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2023-12-20 03:09:03,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 156. [2023-12-20 03:09:03,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 154 states have (on average 1.422077922077922) internal successors, (219), 155 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) [2023-12-20 03:09:03,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 219 transitions. [2023-12-20 03:09:03,022 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 219 transitions. Word has length 48 [2023-12-20 03:09:03,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:09:03,023 INFO L495 AbstractCegarLoop]: Abstraction has 156 states and 219 transitions. [2023-12-20 03:09:03,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:09:03,023 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 219 transitions. [2023-12-20 03:09:03,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-12-20 03:09:03,024 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:09:03,024 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] [2023-12-20 03:09:03,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-20 03:09:03,024 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:09:03,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:09:03,025 INFO L85 PathProgramCache]: Analyzing trace with hash 967473249, now seen corresponding path program 1 times [2023-12-20 03:09:03,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:09:03,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418556346] [2023-12-20 03:09:03,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:09:03,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:09:03,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:09:03,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:09:03,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:09:03,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418556346] [2023-12-20 03:09:03,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418556346] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:09:03,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:09:03,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 03:09:03,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558034392] [2023-12-20 03:09:03,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:09:03,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 03:09:03,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:09:03,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 03:09:03,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-20 03:09:03,182 INFO L87 Difference]: Start difference. First operand 156 states and 219 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:09:03,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:09:03,249 INFO L93 Difference]: Finished difference Result 469 states and 689 transitions. [2023-12-20 03:09:03,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 03:09:03,250 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 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 49 [2023-12-20 03:09:03,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:09:03,251 INFO L225 Difference]: With dead ends: 469 [2023-12-20 03:09:03,252 INFO L226 Difference]: Without dead ends: 387 [2023-12-20 03:09:03,252 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-20 03:09:03,256 INFO L413 NwaCegarLoop]: 255 mSDtfsCounter, 298 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 530 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:09:03,257 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [298 Valid, 530 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:09:03,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2023-12-20 03:09:03,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 247. [2023-12-20 03:09:03,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 245 states have (on average 1.4612244897959183) internal successors, (358), 246 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:09:03,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 358 transitions. [2023-12-20 03:09:03,273 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 358 transitions. Word has length 49 [2023-12-20 03:09:03,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:09:03,275 INFO L495 AbstractCegarLoop]: Abstraction has 247 states and 358 transitions. [2023-12-20 03:09:03,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:09:03,275 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 358 transitions. [2023-12-20 03:09:03,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-12-20 03:09:03,276 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:09:03,276 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:09:03,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-20 03:09:03,277 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:09:03,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:09:03,277 INFO L85 PathProgramCache]: Analyzing trace with hash 1095295369, now seen corresponding path program 1 times [2023-12-20 03:09:03,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:09:03,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945633606] [2023-12-20 03:09:03,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:09:03,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:09:03,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:09:03,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:09:03,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:09:03,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945633606] [2023-12-20 03:09:03,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945633606] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:09:03,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:09:03,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 03:09:03,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380383253] [2023-12-20 03:09:03,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:09:03,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 03:09:03,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:09:03,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 03:09:03,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-20 03:09:03,382 INFO L87 Difference]: Start difference. First operand 247 states and 358 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:09:03,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:09:03,460 INFO L93 Difference]: Finished difference Result 555 states and 820 transitions. [2023-12-20 03:09:03,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 03:09:03,460 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 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 49 [2023-12-20 03:09:03,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:09:03,462 INFO L225 Difference]: With dead ends: 555 [2023-12-20 03:09:03,462 INFO L226 Difference]: Without dead ends: 473 [2023-12-20 03:09:03,466 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-20 03:09:03,471 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 356 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 356 SdHoareTripleChecker+Valid, 535 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 03:09:03,472 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [356 Valid, 535 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 03:09:03,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2023-12-20 03:09:03,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 375. [2023-12-20 03:09:03,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 373 states have (on average 1.479892761394102) internal successors, (552), 374 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:09:03,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 552 transitions. [2023-12-20 03:09:03,481 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 552 transitions. Word has length 49 [2023-12-20 03:09:03,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:09:03,481 INFO L495 AbstractCegarLoop]: Abstraction has 375 states and 552 transitions. [2023-12-20 03:09:03,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:09:03,481 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 552 transitions. [2023-12-20 03:09:03,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-12-20 03:09:03,486 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:09:03,486 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] [2023-12-20 03:09:03,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-20 03:09:03,486 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:09:03,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:09:03,487 INFO L85 PathProgramCache]: Analyzing trace with hash 1600326517, now seen corresponding path program 1 times [2023-12-20 03:09:03,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:09:03,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691014442] [2023-12-20 03:09:03,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:09:03,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:09:03,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:09:03,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:09:03,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:09:03,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691014442] [2023-12-20 03:09:03,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691014442] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:09:03,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:09:03,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-20 03:09:03,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130812590] [2023-12-20 03:09:03,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:09:03,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 03:09:03,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:09:03,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 03:09:03,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-20 03:09:03,596 INFO L87 Difference]: Start difference. First operand 375 states and 552 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:09:03,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:09:03,674 INFO L93 Difference]: Finished difference Result 646 states and 959 transitions. [2023-12-20 03:09:03,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 03:09:03,674 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 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 49 [2023-12-20 03:09:03,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:09:03,677 INFO L225 Difference]: With dead ends: 646 [2023-12-20 03:09:03,677 INFO L226 Difference]: Without dead ends: 564 [2023-12-20 03:09:03,679 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-20 03:09:03,679 INFO L413 NwaCegarLoop]: 222 mSDtfsCounter, 355 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 355 SdHoareTripleChecker+Valid, 569 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 03:09:03,679 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [355 Valid, 569 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 03:09:03,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2023-12-20 03:09:03,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 466. [2023-12-20 03:09:03,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 466 states, 464 states have (on average 1.4892241379310345) internal successors, (691), 465 states have internal predecessors, (691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:09:03,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 691 transitions. [2023-12-20 03:09:03,687 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 691 transitions. Word has length 49 [2023-12-20 03:09:03,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:09:03,688 INFO L495 AbstractCegarLoop]: Abstraction has 466 states and 691 transitions. [2023-12-20 03:09:03,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:09:03,688 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 691 transitions. [2023-12-20 03:09:03,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-20 03:09:03,690 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:09:03,690 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:09:03,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-20 03:09:03,691 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:09:03,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:09:03,691 INFO L85 PathProgramCache]: Analyzing trace with hash -247753770, now seen corresponding path program 1 times [2023-12-20 03:09:03,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:09:03,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408484942] [2023-12-20 03:09:03,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:09:03,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:09:03,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:09:03,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:09:03,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:09:03,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408484942] [2023-12-20 03:09:03,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408484942] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:09:03,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:09:03,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 03:09:03,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958759462] [2023-12-20 03:09:03,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:09:03,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 03:09:03,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:09:03,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 03:09:03,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 03:09:03,776 INFO L87 Difference]: Start difference. First operand 466 states and 691 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:09:03,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:09:03,846 INFO L93 Difference]: Finished difference Result 910 states and 1359 transitions. [2023-12-20 03:09:03,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 03:09:03,847 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 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 50 [2023-12-20 03:09:03,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:09:03,848 INFO L225 Difference]: With dead ends: 910 [2023-12-20 03:09:03,848 INFO L226 Difference]: Without dead ends: 466 [2023-12-20 03:09:03,849 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-20 03:09:03,849 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 380 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 380 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 03:09:03,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [380 Valid, 78 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 03:09:03,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2023-12-20 03:09:03,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 466. [2023-12-20 03:09:03,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 466 states, 464 states have (on average 1.4676724137931034) internal successors, (681), 465 states have internal predecessors, (681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:09:03,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 681 transitions. [2023-12-20 03:09:03,857 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 681 transitions. Word has length 50 [2023-12-20 03:09:03,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:09:03,857 INFO L495 AbstractCegarLoop]: Abstraction has 466 states and 681 transitions. [2023-12-20 03:09:03,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:09:03,858 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 681 transitions. [2023-12-20 03:09:03,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-12-20 03:09:03,858 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:09:03,858 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] [2023-12-20 03:09:03,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-20 03:09:03,858 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:09:03,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:09:03,859 INFO L85 PathProgramCache]: Analyzing trace with hash -1364763558, now seen corresponding path program 1 times [2023-12-20 03:09:03,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:09:03,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175429630] [2023-12-20 03:09:03,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:09:03,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:09:03,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:09:03,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:09:03,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:09:03,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175429630] [2023-12-20 03:09:03,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175429630] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:09:03,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:09:03,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 03:09:03,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559340493] [2023-12-20 03:09:03,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:09:03,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 03:09:03,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:09:03,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 03:09:03,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 03:09:03,939 INFO L87 Difference]: Start difference. First operand 466 states and 681 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:09:04,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:09:04,008 INFO L93 Difference]: Finished difference Result 902 states and 1330 transitions. [2023-12-20 03:09:04,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 03:09:04,009 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 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 51 [2023-12-20 03:09:04,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:09:04,011 INFO L225 Difference]: With dead ends: 902 [2023-12-20 03:09:04,011 INFO L226 Difference]: Without dead ends: 466 [2023-12-20 03:09:04,011 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-20 03:09:04,012 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 351 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 351 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:09:04,012 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [351 Valid, 94 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:09:04,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2023-12-20 03:09:04,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 466. [2023-12-20 03:09:04,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 466 states, 464 states have (on average 1.4461206896551724) internal successors, (671), 465 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:09:04,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 671 transitions. [2023-12-20 03:09:04,020 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 671 transitions. Word has length 51 [2023-12-20 03:09:04,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:09:04,021 INFO L495 AbstractCegarLoop]: Abstraction has 466 states and 671 transitions. [2023-12-20 03:09:04,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:09:04,021 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 671 transitions. [2023-12-20 03:09:04,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-12-20 03:09:04,022 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:09:04,022 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:09:04,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-20 03:09:04,022 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:09:04,022 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:09:04,022 INFO L85 PathProgramCache]: Analyzing trace with hash 114055254, now seen corresponding path program 1 times [2023-12-20 03:09:04,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:09:04,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194588299] [2023-12-20 03:09:04,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:09:04,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:09:04,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:09:04,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:09:04,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:09:04,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194588299] [2023-12-20 03:09:04,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194588299] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:09:04,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:09:04,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-20 03:09:04,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848306090] [2023-12-20 03:09:04,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:09:04,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-20 03:09:04,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:09:04,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-20 03:09:04,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-20 03:09:04,098 INFO L87 Difference]: Start difference. First operand 466 states and 671 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:09:04,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:09:04,163 INFO L93 Difference]: Finished difference Result 906 states and 1315 transitions. [2023-12-20 03:09:04,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-20 03:09:04,164 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 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 52 [2023-12-20 03:09:04,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:09:04,165 INFO L225 Difference]: With dead ends: 906 [2023-12-20 03:09:04,165 INFO L226 Difference]: Without dead ends: 466 [2023-12-20 03:09:04,166 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-20 03:09:04,167 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 356 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 356 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 03:09:04,167 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [356 Valid, 86 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 03:09:04,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2023-12-20 03:09:04,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 466. [2023-12-20 03:09:04,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 466 states, 464 states have (on average 1.4245689655172413) internal successors, (661), 465 states have internal predecessors, (661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:09:04,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 661 transitions. [2023-12-20 03:09:04,174 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 661 transitions. Word has length 52 [2023-12-20 03:09:04,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:09:04,174 INFO L495 AbstractCegarLoop]: Abstraction has 466 states and 661 transitions. [2023-12-20 03:09:04,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:09:04,175 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 661 transitions. [2023-12-20 03:09:04,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-20 03:09:04,175 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:09:04,175 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] [2023-12-20 03:09:04,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-20 03:09:04,175 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:09:04,176 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:09:04,176 INFO L85 PathProgramCache]: Analyzing trace with hash 456972262, now seen corresponding path program 1 times [2023-12-20 03:09:04,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:09:04,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052385667] [2023-12-20 03:09:04,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:09:04,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:09:04,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:09:04,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:09:04,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:09:04,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052385667] [2023-12-20 03:09:04,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052385667] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:09:04,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:09:04,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-20 03:09:04,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796952277] [2023-12-20 03:09:04,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:09:04,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-20 03:09:04,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:09:04,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-20 03:09:04,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2023-12-20 03:09:04,494 INFO L87 Difference]: Start difference. First operand 466 states and 661 transitions. Second operand has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:09:04,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:09:04,899 INFO L93 Difference]: Finished difference Result 1272 states and 1819 transitions. [2023-12-20 03:09:04,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 03:09:04,900 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 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 53 [2023-12-20 03:09:04,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:09:04,902 INFO L225 Difference]: With dead ends: 1272 [2023-12-20 03:09:04,902 INFO L226 Difference]: Without dead ends: 883 [2023-12-20 03:09:04,903 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=135, Invalid=417, Unknown=0, NotChecked=0, Total=552 [2023-12-20 03:09:04,903 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 942 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 942 SdHoareTripleChecker+Valid, 312 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-20 03:09:04,904 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [942 Valid, 312 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 288 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-20 03:09:04,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 883 states. [2023-12-20 03:09:04,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 883 to 466. [2023-12-20 03:09:04,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 466 states, 464 states have (on average 1.415948275862069) internal successors, (657), 465 states have internal predecessors, (657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:09:04,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 657 transitions. [2023-12-20 03:09:04,913 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 657 transitions. Word has length 53 [2023-12-20 03:09:04,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:09:04,914 INFO L495 AbstractCegarLoop]: Abstraction has 466 states and 657 transitions. [2023-12-20 03:09:04,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:09:04,914 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 657 transitions. [2023-12-20 03:09:04,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-20 03:09:04,914 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:09:04,914 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:09:04,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-20 03:09:04,915 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:09:04,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:09:04,915 INFO L85 PathProgramCache]: Analyzing trace with hash 124490686, now seen corresponding path program 1 times [2023-12-20 03:09:04,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:09:04,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183216079] [2023-12-20 03:09:04,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:09:04,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:09:04,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:09:05,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:09:05,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:09:05,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183216079] [2023-12-20 03:09:05,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183216079] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:09:05,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:09:05,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-20 03:09:05,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089623741] [2023-12-20 03:09:05,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:09:05,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-20 03:09:05,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:09:05,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-20 03:09:05,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2023-12-20 03:09:05,153 INFO L87 Difference]: Start difference. First operand 466 states and 657 transitions. Second operand has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:09:05,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:09:05,535 INFO L93 Difference]: Finished difference Result 1287 states and 1835 transitions. [2023-12-20 03:09:05,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-20 03:09:05,535 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 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 53 [2023-12-20 03:09:05,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:09:05,537 INFO L225 Difference]: With dead ends: 1287 [2023-12-20 03:09:05,538 INFO L226 Difference]: Without dead ends: 888 [2023-12-20 03:09:05,538 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=135, Invalid=417, Unknown=0, NotChecked=0, Total=552 [2023-12-20 03:09:05,538 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 983 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 983 SdHoareTripleChecker+Valid, 310 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-20 03:09:05,539 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [983 Valid, 310 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 285 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-20 03:09:05,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 888 states. [2023-12-20 03:09:05,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 888 to 466. [2023-12-20 03:09:05,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 466 states, 464 states have (on average 1.4116379310344827) internal successors, (655), 465 states have internal predecessors, (655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:09:05,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 655 transitions. [2023-12-20 03:09:05,547 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 655 transitions. Word has length 53 [2023-12-20 03:09:05,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:09:05,547 INFO L495 AbstractCegarLoop]: Abstraction has 466 states and 655 transitions. [2023-12-20 03:09:05,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:09:05,547 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 655 transitions. [2023-12-20 03:09:05,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-12-20 03:09:05,547 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:09:05,547 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] [2023-12-20 03:09:05,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-20 03:09:05,548 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:09:05,548 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:09:05,548 INFO L85 PathProgramCache]: Analyzing trace with hash 359546620, now seen corresponding path program 1 times [2023-12-20 03:09:05,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:09:05,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779577777] [2023-12-20 03:09:05,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:09:05,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:09:05,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:09:05,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:09:05,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:09:05,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779577777] [2023-12-20 03:09:05,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779577777] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:09:05,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:09:05,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-20 03:09:05,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751300742] [2023-12-20 03:09:05,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:09:05,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-20 03:09:05,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:09:05,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-20 03:09:05,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-20 03:09:05,685 INFO L87 Difference]: Start difference. First operand 466 states and 655 transitions. Second operand has 8 states, 8 states have (on average 6.75) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:09:05,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:09:05,927 INFO L93 Difference]: Finished difference Result 1259 states and 1800 transitions. [2023-12-20 03:09:05,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-20 03:09:05,927 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 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 54 [2023-12-20 03:09:05,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:09:05,929 INFO L225 Difference]: With dead ends: 1259 [2023-12-20 03:09:05,930 INFO L226 Difference]: Without dead ends: 855 [2023-12-20 03:09:05,930 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2023-12-20 03:09:05,931 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 538 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 538 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-20 03:09:05,931 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [538 Valid, 309 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-20 03:09:05,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2023-12-20 03:09:05,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 466. [2023-12-20 03:09:05,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 466 states, 464 states have (on average 1.4094827586206897) internal successors, (654), 465 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:09:05,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 654 transitions. [2023-12-20 03:09:05,940 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 654 transitions. Word has length 54 [2023-12-20 03:09:05,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:09:05,940 INFO L495 AbstractCegarLoop]: Abstraction has 466 states and 654 transitions. [2023-12-20 03:09:05,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:09:05,940 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 654 transitions. [2023-12-20 03:09:05,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-20 03:09:05,940 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:09:05,940 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:09:05,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-20 03:09:05,941 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:09:05,941 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:09:05,941 INFO L85 PathProgramCache]: Analyzing trace with hash 568588166, now seen corresponding path program 1 times [2023-12-20 03:09:05,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:09:05,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976563034] [2023-12-20 03:09:05,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:09:05,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:09:05,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:09:06,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:09:06,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:09:06,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976563034] [2023-12-20 03:09:06,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976563034] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:09:06,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:09:06,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-20 03:09:06,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797647512] [2023-12-20 03:09:06,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:09:06,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-20 03:09:06,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:09:06,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-20 03:09:06,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2023-12-20 03:09:06,339 INFO L87 Difference]: Start difference. First operand 466 states and 654 transitions. Second operand has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 11 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:09:07,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:09:07,201 INFO L93 Difference]: Finished difference Result 2519 states and 3643 transitions. [2023-12-20 03:09:07,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-20 03:09:07,202 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 11 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2023-12-20 03:09:07,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:09:07,209 INFO L225 Difference]: With dead ends: 2519 [2023-12-20 03:09:07,209 INFO L226 Difference]: Without dead ends: 2327 [2023-12-20 03:09:07,210 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=173, Invalid=427, Unknown=0, NotChecked=0, Total=600 [2023-12-20 03:09:07,211 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 1212 mSDsluCounter, 710 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1212 SdHoareTripleChecker+Valid, 895 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-20 03:09:07,211 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1212 Valid, 895 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-20 03:09:07,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2327 states. [2023-12-20 03:09:07,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2327 to 445. [2023-12-20 03:09:07,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 445 states, 443 states have (on average 1.4108352144469527) internal successors, (625), 444 states have internal predecessors, (625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:09:07,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 625 transitions. [2023-12-20 03:09:07,229 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 625 transitions. Word has length 55 [2023-12-20 03:09:07,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:09:07,229 INFO L495 AbstractCegarLoop]: Abstraction has 445 states and 625 transitions. [2023-12-20 03:09:07,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 11 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:09:07,229 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 625 transitions. [2023-12-20 03:09:07,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-20 03:09:07,229 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:09:07,230 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:09:07,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-20 03:09:07,230 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:09:07,230 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:09:07,230 INFO L85 PathProgramCache]: Analyzing trace with hash -782372312, now seen corresponding path program 1 times [2023-12-20 03:09:07,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:09:07,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318112200] [2023-12-20 03:09:07,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:09:07,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:09:07,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:09:07,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:09:07,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:09:07,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318112200] [2023-12-20 03:09:07,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318112200] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:09:07,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:09:07,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2023-12-20 03:09:07,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766006713] [2023-12-20 03:09:07,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:09:07,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-20 03:09:07,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:09:07,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-20 03:09:07,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2023-12-20 03:09:07,687 INFO L87 Difference]: Start difference. First operand 445 states and 625 transitions. Second operand has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 19 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:09:08,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:09:08,916 INFO L93 Difference]: Finished difference Result 2897 states and 4186 transitions. [2023-12-20 03:09:08,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-20 03:09:08,917 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 19 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2023-12-20 03:09:08,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:09:08,923 INFO L225 Difference]: With dead ends: 2897 [2023-12-20 03:09:08,923 INFO L226 Difference]: Without dead ends: 2508 [2023-12-20 03:09:08,924 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=212, Invalid=978, Unknown=0, NotChecked=0, Total=1190 [2023-12-20 03:09:08,925 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 824 mSDsluCounter, 3006 mSDsCounter, 0 mSdLazyCounter, 1700 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 824 SdHoareTripleChecker+Valid, 3225 SdHoareTripleChecker+Invalid, 1702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1700 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-20 03:09:08,925 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [824 Valid, 3225 Invalid, 1702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1700 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-20 03:09:08,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2508 states. [2023-12-20 03:09:08,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2508 to 460. [2023-12-20 03:09:08,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 460 states, 458 states have (on average 1.4017467248908297) internal successors, (642), 459 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:09:08,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 642 transitions. [2023-12-20 03:09:08,942 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 642 transitions. Word has length 55 [2023-12-20 03:09:08,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:09:08,942 INFO L495 AbstractCegarLoop]: Abstraction has 460 states and 642 transitions. [2023-12-20 03:09:08,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 19 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:09:08,942 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 642 transitions. [2023-12-20 03:09:08,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-12-20 03:09:08,942 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:09:08,943 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] [2023-12-20 03:09:08,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-20 03:09:08,943 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:09:08,943 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:09:08,943 INFO L85 PathProgramCache]: Analyzing trace with hash -749357809, now seen corresponding path program 1 times [2023-12-20 03:09:08,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:09:08,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138645025] [2023-12-20 03:09:08,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:09:08,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:09:08,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:09:09,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:09:09,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:09:09,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138645025] [2023-12-20 03:09:09,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138645025] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:09:09,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:09:09,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2023-12-20 03:09:09,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862350882] [2023-12-20 03:09:09,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:09:09,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-20 03:09:09,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:09:09,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-20 03:09:09,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2023-12-20 03:09:09,607 INFO L87 Difference]: Start difference. First operand 460 states and 642 transitions. Second operand has 18 states, 18 states have (on average 3.111111111111111) internal successors, (56), 17 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:09:11,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:09:11,621 INFO L93 Difference]: Finished difference Result 2423 states and 3498 transitions. [2023-12-20 03:09:11,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-12-20 03:09:11,621 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.111111111111111) internal successors, (56), 17 states have internal predecessors, (56), 0 states have call successors, (0), 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 56 [2023-12-20 03:09:11,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:09:11,627 INFO L225 Difference]: With dead ends: 2423 [2023-12-20 03:09:11,627 INFO L226 Difference]: Without dead ends: 2246 [2023-12-20 03:09:11,628 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=262, Invalid=1070, Unknown=0, NotChecked=0, Total=1332 [2023-12-20 03:09:11,628 INFO L413 NwaCegarLoop]: 315 mSDtfsCounter, 843 mSDsluCounter, 2273 mSDsCounter, 0 mSdLazyCounter, 1267 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 843 SdHoareTripleChecker+Valid, 2588 SdHoareTripleChecker+Invalid, 1268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-20 03:09:11,628 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [843 Valid, 2588 Invalid, 1268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1267 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-20 03:09:11,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2246 states. [2023-12-20 03:09:11,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2246 to 448. [2023-12-20 03:09:11,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 448 states, 446 states have (on average 1.4013452914798206) internal successors, (625), 447 states have internal predecessors, (625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:09:11,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 625 transitions. [2023-12-20 03:09:11,640 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 625 transitions. Word has length 56 [2023-12-20 03:09:11,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:09:11,641 INFO L495 AbstractCegarLoop]: Abstraction has 448 states and 625 transitions. [2023-12-20 03:09:11,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.111111111111111) internal successors, (56), 17 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:09:11,641 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 625 transitions. [2023-12-20 03:09:11,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-12-20 03:09:11,641 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:09:11,641 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] [2023-12-20 03:09:11,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-20 03:09:11,641 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:09:11,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:09:11,642 INFO L85 PathProgramCache]: Analyzing trace with hash 1588815950, now seen corresponding path program 1 times [2023-12-20 03:09:11,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:09:11,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222138196] [2023-12-20 03:09:11,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:09:11,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:09:11,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:09:12,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:09:12,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:09:12,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222138196] [2023-12-20 03:09:12,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222138196] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:09:12,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:09:12,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-20 03:09:12,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604485915] [2023-12-20 03:09:12,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:09:12,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-20 03:09:12,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:09:12,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-20 03:09:12,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2023-12-20 03:09:12,015 INFO L87 Difference]: Start difference. First operand 448 states and 625 transitions. Second operand has 13 states, 13 states have (on average 4.3076923076923075) internal successors, (56), 12 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:09:12,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:09:12,781 INFO L93 Difference]: Finished difference Result 1722 states and 2486 transitions. [2023-12-20 03:09:12,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 03:09:12,781 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.3076923076923075) internal successors, (56), 12 states have internal predecessors, (56), 0 states have call successors, (0), 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 56 [2023-12-20 03:09:12,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:09:12,785 INFO L225 Difference]: With dead ends: 1722 [2023-12-20 03:09:12,785 INFO L226 Difference]: Without dead ends: 1551 [2023-12-20 03:09:12,785 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=153, Invalid=447, Unknown=0, NotChecked=0, Total=600 [2023-12-20 03:09:12,786 INFO L413 NwaCegarLoop]: 271 mSDtfsCounter, 813 mSDsluCounter, 907 mSDsCounter, 0 mSdLazyCounter, 334 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 813 SdHoareTripleChecker+Valid, 1178 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-20 03:09:12,786 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [813 Valid, 1178 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 334 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-20 03:09:12,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1551 states. [2023-12-20 03:09:12,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1551 to 441. [2023-12-20 03:09:12,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 439 states have (on average 1.4031890660592254) internal successors, (616), 440 states have internal predecessors, (616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:09:12,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 616 transitions. [2023-12-20 03:09:12,795 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 616 transitions. Word has length 56 [2023-12-20 03:09:12,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:09:12,795 INFO L495 AbstractCegarLoop]: Abstraction has 441 states and 616 transitions. [2023-12-20 03:09:12,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.3076923076923075) internal successors, (56), 12 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:09:12,795 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 616 transitions. [2023-12-20 03:09:12,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-12-20 03:09:12,796 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:09:12,796 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:09:12,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-20 03:09:12,796 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:09:12,796 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:09:12,796 INFO L85 PathProgramCache]: Analyzing trace with hash -1032044749, now seen corresponding path program 1 times [2023-12-20 03:09:12,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:09:12,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80073837] [2023-12-20 03:09:12,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:09:12,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:09:12,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:09:13,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:09:13,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:09:13,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80073837] [2023-12-20 03:09:13,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80073837] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:09:13,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:09:13,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-20 03:09:13,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760252818] [2023-12-20 03:09:13,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:09:13,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-20 03:09:13,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:09:13,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-20 03:09:13,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2023-12-20 03:09:13,144 INFO L87 Difference]: Start difference. First operand 441 states and 616 transitions. Second operand has 13 states, 13 states have (on average 4.3076923076923075) internal successors, (56), 12 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:09:13,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:09:13,853 INFO L93 Difference]: Finished difference Result 1719 states and 2483 transitions. [2023-12-20 03:09:13,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-20 03:09:13,853 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.3076923076923075) internal successors, (56), 12 states have internal predecessors, (56), 0 states have call successors, (0), 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 56 [2023-12-20 03:09:13,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:09:13,864 INFO L225 Difference]: With dead ends: 1719 [2023-12-20 03:09:13,864 INFO L226 Difference]: Without dead ends: 1543 [2023-12-20 03:09:13,865 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=153, Invalid=447, Unknown=0, NotChecked=0, Total=600 [2023-12-20 03:09:13,866 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 1186 mSDsluCounter, 771 mSDsCounter, 0 mSdLazyCounter, 306 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1186 SdHoareTripleChecker+Valid, 999 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-20 03:09:13,866 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1186 Valid, 999 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 306 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-20 03:09:13,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1543 states. [2023-12-20 03:09:13,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1543 to 427. [2023-12-20 03:09:13,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 427 states, 426 states have (on average 1.4107981220657277) internal successors, (601), 426 states have internal predecessors, (601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:09:13,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 601 transitions. [2023-12-20 03:09:13,892 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 601 transitions. Word has length 56 [2023-12-20 03:09:13,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:09:13,893 INFO L495 AbstractCegarLoop]: Abstraction has 427 states and 601 transitions. [2023-12-20 03:09:13,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.3076923076923075) internal successors, (56), 12 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:09:13,893 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 601 transitions. [2023-12-20 03:09:13,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-20 03:09:13,893 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:09:13,893 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] [2023-12-20 03:09:13,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-20 03:09:13,893 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:09:13,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:09:13,894 INFO L85 PathProgramCache]: Analyzing trace with hash -241009193, now seen corresponding path program 1 times [2023-12-20 03:09:13,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:09:13,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595663090] [2023-12-20 03:09:13,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:09:13,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:09:13,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:09:13,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:09:13,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:09:13,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595663090] [2023-12-20 03:09:13,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595663090] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:09:13,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:09:13,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 03:09:13,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978599009] [2023-12-20 03:09:13,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:09:13,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 03:09:13,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:09:13,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 03:09:13,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:09:13,944 INFO L87 Difference]: Start difference. First operand 427 states and 601 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:09:13,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:09:13,994 INFO L93 Difference]: Finished difference Result 1093 states and 1568 transitions. [2023-12-20 03:09:13,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 03:09:13,995 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2023-12-20 03:09:13,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:09:13,996 INFO L225 Difference]: With dead ends: 1093 [2023-12-20 03:09:13,996 INFO L226 Difference]: Without dead ends: 731 [2023-12-20 03:09:13,997 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 [2023-12-20 03:09:13,997 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 49 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 274 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:09:13,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 274 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:09:13,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 731 states. [2023-12-20 03:09:14,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 731 to 729. [2023-12-20 03:09:14,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 729 states, 728 states have (on average 1.396978021978022) internal successors, (1017), 728 states have internal predecessors, (1017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:09:14,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 729 states to 729 states and 1017 transitions. [2023-12-20 03:09:14,006 INFO L78 Accepts]: Start accepts. Automaton has 729 states and 1017 transitions. Word has length 76 [2023-12-20 03:09:14,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:09:14,006 INFO L495 AbstractCegarLoop]: Abstraction has 729 states and 1017 transitions. [2023-12-20 03:09:14,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:09:14,006 INFO L276 IsEmpty]: Start isEmpty. Operand 729 states and 1017 transitions. [2023-12-20 03:09:14,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-20 03:09:14,007 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:09:14,007 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] [2023-12-20 03:09:14,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-20 03:09:14,007 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:09:14,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:09:14,007 INFO L85 PathProgramCache]: Analyzing trace with hash 1600462639, now seen corresponding path program 1 times [2023-12-20 03:09:14,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:09:14,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915578750] [2023-12-20 03:09:14,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:09:14,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:09:14,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:09:14,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:09:14,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:09:14,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915578750] [2023-12-20 03:09:14,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915578750] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:09:14,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:09:14,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 03:09:14,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377690380] [2023-12-20 03:09:14,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:09:14,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 03:09:14,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:09:14,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 03:09:14,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:09:14,061 INFO L87 Difference]: Start difference. First operand 729 states and 1017 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:09:14,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:09:14,073 INFO L93 Difference]: Finished difference Result 1814 states and 2552 transitions. [2023-12-20 03:09:14,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 03:09:14,073 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 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 77 [2023-12-20 03:09:14,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:09:14,076 INFO L225 Difference]: With dead ends: 1814 [2023-12-20 03:09:14,076 INFO L226 Difference]: Without dead ends: 1150 [2023-12-20 03:09:14,076 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 [2023-12-20 03:09:14,077 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 55 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:09:14,077 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 261 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:09:14,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1150 states. [2023-12-20 03:09:14,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1150 to 1076. [2023-12-20 03:09:14,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1076 states, 1075 states have (on average 1.3906976744186046) internal successors, (1495), 1075 states have internal predecessors, (1495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:09:14,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1076 states to 1076 states and 1495 transitions. [2023-12-20 03:09:14,088 INFO L78 Accepts]: Start accepts. Automaton has 1076 states and 1495 transitions. Word has length 77 [2023-12-20 03:09:14,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:09:14,088 INFO L495 AbstractCegarLoop]: Abstraction has 1076 states and 1495 transitions. [2023-12-20 03:09:14,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:09:14,088 INFO L276 IsEmpty]: Start isEmpty. Operand 1076 states and 1495 transitions. [2023-12-20 03:09:14,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-20 03:09:14,089 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:09:14,089 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:09:14,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-20 03:09:14,089 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:09:14,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:09:14,089 INFO L85 PathProgramCache]: Analyzing trace with hash 398753711, now seen corresponding path program 1 times [2023-12-20 03:09:14,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:09:14,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277845477] [2023-12-20 03:09:14,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:09:14,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:09:14,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:09:14,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:09:14,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:09:14,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277845477] [2023-12-20 03:09:14,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277845477] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:09:14,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:09:14,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 03:09:14,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331984456] [2023-12-20 03:09:14,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:09:14,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 03:09:14,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:09:14,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 03:09:14,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:09:14,139 INFO L87 Difference]: Start difference. First operand 1076 states and 1495 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:09:14,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:09:14,152 INFO L93 Difference]: Finished difference Result 2990 states and 4158 transitions. [2023-12-20 03:09:14,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 03:09:14,152 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2023-12-20 03:09:14,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:09:14,156 INFO L225 Difference]: With dead ends: 2990 [2023-12-20 03:09:14,156 INFO L226 Difference]: Without dead ends: 1979 [2023-12-20 03:09:14,157 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 [2023-12-20 03:09:14,157 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 48 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:09:14,157 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 259 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:09:14,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1979 states. [2023-12-20 03:09:14,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1979 to 1869. [2023-12-20 03:09:14,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1869 states, 1868 states have (on average 1.3752676659528908) internal successors, (2569), 1868 states have internal predecessors, (2569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:09:14,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1869 states to 1869 states and 2569 transitions. [2023-12-20 03:09:14,178 INFO L78 Accepts]: Start accepts. Automaton has 1869 states and 2569 transitions. Word has length 78 [2023-12-20 03:09:14,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:09:14,178 INFO L495 AbstractCegarLoop]: Abstraction has 1869 states and 2569 transitions. [2023-12-20 03:09:14,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:09:14,179 INFO L276 IsEmpty]: Start isEmpty. Operand 1869 states and 2569 transitions. [2023-12-20 03:09:14,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-12-20 03:09:14,179 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:09:14,179 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] [2023-12-20 03:09:14,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-20 03:09:14,179 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:09:14,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:09:14,180 INFO L85 PathProgramCache]: Analyzing trace with hash -718990442, now seen corresponding path program 1 times [2023-12-20 03:09:14,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:09:14,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124927878] [2023-12-20 03:09:14,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:09:14,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:09:14,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:09:14,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:09:14,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:09:14,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124927878] [2023-12-20 03:09:14,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124927878] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:09:14,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:09:14,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 03:09:14,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095668530] [2023-12-20 03:09:14,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:09:14,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 03:09:14,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:09:14,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 03:09:14,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:09:14,234 INFO L87 Difference]: Start difference. First operand 1869 states and 2569 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:09:14,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:09:14,250 INFO L93 Difference]: Finished difference Result 5261 states and 7191 transitions. [2023-12-20 03:09:14,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 03:09:14,251 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 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 79 [2023-12-20 03:09:14,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:09:14,258 INFO L225 Difference]: With dead ends: 5261 [2023-12-20 03:09:14,258 INFO L226 Difference]: Without dead ends: 3457 [2023-12-20 03:09:14,260 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 [2023-12-20 03:09:14,261 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 41 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:09:14,261 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 256 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:09:14,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3457 states. [2023-12-20 03:09:14,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3457 to 3239. [2023-12-20 03:09:14,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3239 states, 3238 states have (on average 1.3483631871525632) internal successors, (4366), 3238 states have internal predecessors, (4366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:09:14,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3239 states to 3239 states and 4366 transitions. [2023-12-20 03:09:14,300 INFO L78 Accepts]: Start accepts. Automaton has 3239 states and 4366 transitions. Word has length 79 [2023-12-20 03:09:14,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:09:14,301 INFO L495 AbstractCegarLoop]: Abstraction has 3239 states and 4366 transitions. [2023-12-20 03:09:14,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:09:14,301 INFO L276 IsEmpty]: Start isEmpty. Operand 3239 states and 4366 transitions. [2023-12-20 03:09:14,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-20 03:09:14,301 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:09:14,301 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] [2023-12-20 03:09:14,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-20 03:09:14,302 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:09:14,302 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:09:14,302 INFO L85 PathProgramCache]: Analyzing trace with hash -660634110, now seen corresponding path program 1 times [2023-12-20 03:09:14,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:09:14,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001071194] [2023-12-20 03:09:14,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:09:14,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:09:14,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:09:14,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:09:14,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:09:14,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001071194] [2023-12-20 03:09:14,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001071194] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:09:14,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:09:14,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-20 03:09:14,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948655437] [2023-12-20 03:09:14,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:09:14,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-20 03:09:14,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:09:14,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-20 03:09:14,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-20 03:09:14,432 INFO L87 Difference]: Start difference. First operand 3239 states and 4366 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:09:14,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:09:14,510 INFO L93 Difference]: Finished difference Result 5051 states and 6769 transitions. [2023-12-20 03:09:14,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-20 03:09:14,510 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2023-12-20 03:09:14,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:09:14,520 INFO L225 Difference]: With dead ends: 5051 [2023-12-20 03:09:14,521 INFO L226 Difference]: Without dead ends: 5049 [2023-12-20 03:09:14,522 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-12-20 03:09:14,522 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 193 mSDsluCounter, 467 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 614 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:09:14,522 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 614 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:09:14,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5049 states. [2023-12-20 03:09:14,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5049 to 3335. [2023-12-20 03:09:14,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3335 states, 3334 states have (on average 1.3263347330533892) internal successors, (4422), 3334 states have internal predecessors, (4422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:09:14,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3335 states to 3335 states and 4422 transitions. [2023-12-20 03:09:14,580 INFO L78 Accepts]: Start accepts. Automaton has 3335 states and 4422 transitions. Word has length 80 [2023-12-20 03:09:14,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:09:14,580 INFO L495 AbstractCegarLoop]: Abstraction has 3335 states and 4422 transitions. [2023-12-20 03:09:14,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:09:14,580 INFO L276 IsEmpty]: Start isEmpty. Operand 3335 states and 4422 transitions. [2023-12-20 03:09:14,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-20 03:09:14,581 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:09:14,581 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] [2023-12-20 03:09:14,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-20 03:09:14,581 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:09:14,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:09:14,581 INFO L85 PathProgramCache]: Analyzing trace with hash -755554106, now seen corresponding path program 1 times [2023-12-20 03:09:14,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:09:14,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107816347] [2023-12-20 03:09:14,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:09:14,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:09:14,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:09:14,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:09:14,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:09:14,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107816347] [2023-12-20 03:09:14,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107816347] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:09:14,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:09:14,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 03:09:14,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779563764] [2023-12-20 03:09:14,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:09:14,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 03:09:14,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:09:14,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 03:09:14,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:09:14,615 INFO L87 Difference]: Start difference. First operand 3335 states and 4422 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:09:14,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:09:14,638 INFO L93 Difference]: Finished difference Result 6731 states and 8944 transitions. [2023-12-20 03:09:14,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 03:09:14,639 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2023-12-20 03:09:14,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:09:14,648 INFO L225 Difference]: With dead ends: 6731 [2023-12-20 03:09:14,648 INFO L226 Difference]: Without dead ends: 3461 [2023-12-20 03:09:14,652 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 [2023-12-20 03:09:14,652 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 67 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:09:14,653 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 206 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:09:14,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3461 states. [2023-12-20 03:09:14,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3461 to 3459. [2023-12-20 03:09:14,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3459 states, 3458 states have (on average 1.305378831694621) internal successors, (4514), 3458 states have internal predecessors, (4514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:09:14,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3459 states to 3459 states and 4514 transitions. [2023-12-20 03:09:14,694 INFO L78 Accepts]: Start accepts. Automaton has 3459 states and 4514 transitions. Word has length 80 [2023-12-20 03:09:14,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:09:14,694 INFO L495 AbstractCegarLoop]: Abstraction has 3459 states and 4514 transitions. [2023-12-20 03:09:14,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:09:14,695 INFO L276 IsEmpty]: Start isEmpty. Operand 3459 states and 4514 transitions. [2023-12-20 03:09:14,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-20 03:09:14,695 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:09:14,696 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:09:14,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-20 03:09:14,696 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:09:14,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:09:14,696 INFO L85 PathProgramCache]: Analyzing trace with hash -913097993, now seen corresponding path program 1 times [2023-12-20 03:09:14,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:09:14,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392933586] [2023-12-20 03:09:14,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:09:14,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:09:14,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:09:14,915 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:09:14,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:09:14,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392933586] [2023-12-20 03:09:14,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392933586] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 03:09:14,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [87141569] [2023-12-20 03:09:14,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:09:14,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 03:09:14,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 03:09:14,918 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) [2023-12-20 03:09:14,925 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-20 03:09:15,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:09:15,045 INFO L262 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-20 03:09:15,050 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 03:09:15,689 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:09:15,689 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 03:09:16,335 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:09:16,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [87141569] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 03:09:16,336 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 03:09:16,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 12, 12] total 30 [2023-12-20 03:09:16,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229673428] [2023-12-20 03:09:16,337 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 03:09:16,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-12-20 03:09:16,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:09:16,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-12-20 03:09:16,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=804, Unknown=0, NotChecked=0, Total=930 [2023-12-20 03:09:16,340 INFO L87 Difference]: Start difference. First operand 3459 states and 4514 transitions. Second operand has 31 states, 31 states have (on average 8.870967741935484) internal successors, (275), 30 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:09:25,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:09:25,201 INFO L93 Difference]: Finished difference Result 61316 states and 78205 transitions. [2023-12-20 03:09:25,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 197 states. [2023-12-20 03:09:25,202 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 8.870967741935484) internal successors, (275), 30 states have internal predecessors, (275), 0 states have call successors, (0), 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 101 [2023-12-20 03:09:25,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:09:25,290 INFO L225 Difference]: With dead ends: 61316 [2023-12-20 03:09:25,290 INFO L226 Difference]: Without dead ends: 57922 [2023-12-20 03:09:25,315 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 403 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 224 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19848 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=9115, Invalid=41735, Unknown=0, NotChecked=0, Total=50850 [2023-12-20 03:09:25,315 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 7037 mSDsluCounter, 2702 mSDsCounter, 0 mSdLazyCounter, 2654 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7037 SdHoareTripleChecker+Valid, 2869 SdHoareTripleChecker+Invalid, 2746 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 2654 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-20 03:09:25,316 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7037 Valid, 2869 Invalid, 2746 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 2654 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-20 03:09:25,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57922 states. [2023-12-20 03:09:25,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57922 to 8479. [2023-12-20 03:09:25,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8479 states, 8478 states have (on average 1.3036093418259023) internal successors, (11052), 8478 states have internal predecessors, (11052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:09:25,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8479 states to 8479 states and 11052 transitions. [2023-12-20 03:09:25,708 INFO L78 Accepts]: Start accepts. Automaton has 8479 states and 11052 transitions. Word has length 101 [2023-12-20 03:09:25,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:09:25,722 INFO L495 AbstractCegarLoop]: Abstraction has 8479 states and 11052 transitions. [2023-12-20 03:09:25,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 8.870967741935484) internal successors, (275), 30 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:09:25,722 INFO L276 IsEmpty]: Start isEmpty. Operand 8479 states and 11052 transitions. [2023-12-20 03:09:25,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-20 03:09:25,724 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:09:25,724 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:09:25,745 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-20 03:09:25,925 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,SelfDestructingSolverStorable22 [2023-12-20 03:09:25,925 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:09:25,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:09:25,926 INFO L85 PathProgramCache]: Analyzing trace with hash -1298747018, now seen corresponding path program 1 times [2023-12-20 03:09:25,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:09:25,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938779552] [2023-12-20 03:09:25,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:09:25,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:09:25,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:09:26,359 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:09:26,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:09:26,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938779552] [2023-12-20 03:09:26,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938779552] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 03:09:26,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [531330494] [2023-12-20 03:09:26,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:09:26,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 03:09:26,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 03:09:26,360 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) [2023-12-20 03:09:26,362 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-20 03:09:26,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:09:26,534 INFO L262 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-20 03:09:26,538 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 03:09:27,048 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:09:27,048 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 03:09:27,813 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:09:27,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [531330494] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 03:09:27,814 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 03:09:27,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 12] total 31 [2023-12-20 03:09:27,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501817309] [2023-12-20 03:09:27,814 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 03:09:27,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-20 03:09:27,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:09:27,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-20 03:09:27,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=877, Unknown=0, NotChecked=0, Total=992 [2023-12-20 03:09:27,817 INFO L87 Difference]: Start difference. First operand 8479 states and 11052 transitions. Second operand has 32 states, 32 states have (on average 8.0625) internal successors, (258), 31 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:10:03,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:10:03,339 INFO L93 Difference]: Finished difference Result 252555 states and 319714 transitions. [2023-12-20 03:10:03,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 594 states. [2023-12-20 03:10:03,339 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 8.0625) internal successors, (258), 31 states have internal predecessors, (258), 0 states have call successors, (0), 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 101 [2023-12-20 03:10:03,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:10:03,905 INFO L225 Difference]: With dead ends: 252555 [2023-12-20 03:10:03,905 INFO L226 Difference]: Without dead ends: 244153 [2023-12-20 03:10:03,996 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 803 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 622 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175421 ImplicationChecksByTransitivity, 30.4s TimeCoverageRelationStatistics Valid=40993, Invalid=347759, Unknown=0, NotChecked=0, Total=388752 [2023-12-20 03:10:04,003 INFO L413 NwaCegarLoop]: 324 mSDtfsCounter, 10381 mSDsluCounter, 6315 mSDsCounter, 0 mSdLazyCounter, 7172 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10381 SdHoareTripleChecker+Valid, 6639 SdHoareTripleChecker+Invalid, 7315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 7172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-12-20 03:10:04,004 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10381 Valid, 6639 Invalid, 7315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 7172 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-12-20 03:10:04,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244153 states. [2023-12-20 03:10:05,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244153 to 44486. [2023-12-20 03:10:05,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44486 states, 44485 states have (on average 1.294773519163763) internal successors, (57598), 44485 states have internal predecessors, (57598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:10:05,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44486 states to 44486 states and 57598 transitions. [2023-12-20 03:10:05,451 INFO L78 Accepts]: Start accepts. Automaton has 44486 states and 57598 transitions. Word has length 101 [2023-12-20 03:10:05,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:10:05,452 INFO L495 AbstractCegarLoop]: Abstraction has 44486 states and 57598 transitions. [2023-12-20 03:10:05,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 8.0625) internal successors, (258), 31 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:10:05,452 INFO L276 IsEmpty]: Start isEmpty. Operand 44486 states and 57598 transitions. [2023-12-20 03:10:05,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-20 03:10:05,457 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:10:05,457 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:10:05,465 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-20 03:10:05,664 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,SelfDestructingSolverStorable23 [2023-12-20 03:10:05,664 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:10:05,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:10:05,665 INFO L85 PathProgramCache]: Analyzing trace with hash 72343413, now seen corresponding path program 1 times [2023-12-20 03:10:05,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:10:05,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871315594] [2023-12-20 03:10:05,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:10:05,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:10:05,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:10:06,157 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:10:06,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:10:06,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871315594] [2023-12-20 03:10:06,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871315594] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 03:10:06,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1729773659] [2023-12-20 03:10:06,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:10:06,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 03:10:06,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 03:10:06,159 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) [2023-12-20 03:10:06,221 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-20 03:10:06,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:10:06,299 INFO L262 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-20 03:10:06,307 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 03:10:06,721 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:10:06,721 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 03:10:07,409 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:10:07,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1729773659] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 03:10:07,410 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 03:10:07,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 11] total 28 [2023-12-20 03:10:07,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49012842] [2023-12-20 03:10:07,410 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 03:10:07,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-20 03:10:07,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:10:07,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-20 03:10:07,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=710, Unknown=0, NotChecked=0, Total=812 [2023-12-20 03:10:07,417 INFO L87 Difference]: Start difference. First operand 44486 states and 57598 transitions. Second operand has 29 states, 29 states have (on average 8.344827586206897) internal successors, (242), 28 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:10:24,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:10:24,279 INFO L93 Difference]: Finished difference Result 234273 states and 298304 transitions. [2023-12-20 03:10:24,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 390 states. [2023-12-20 03:10:24,279 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 8.344827586206897) internal successors, (242), 28 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2023-12-20 03:10:24,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:10:24,737 INFO L225 Difference]: With dead ends: 234273 [2023-12-20 03:10:24,737 INFO L226 Difference]: Without dead ends: 216616 [2023-12-20 03:10:24,778 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 598 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 415 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73668 ImplicationChecksByTransitivity, 13.2s TimeCoverageRelationStatistics Valid=18801, Invalid=154671, Unknown=0, NotChecked=0, Total=173472 [2023-12-20 03:10:24,779 INFO L413 NwaCegarLoop]: 426 mSDtfsCounter, 4685 mSDsluCounter, 7291 mSDsCounter, 0 mSdLazyCounter, 7717 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4685 SdHoareTripleChecker+Valid, 7717 SdHoareTripleChecker+Invalid, 7753 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 7717 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:10:24,779 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4685 Valid, 7717 Invalid, 7753 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 7717 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-12-20 03:10:24,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216616 states. [2023-12-20 03:10:26,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216616 to 54140. [2023-12-20 03:10:26,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54140 states, 54139 states have (on average 1.294648959160679) internal successors, (70091), 54139 states have internal predecessors, (70091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:10:26,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54140 states to 54140 states and 70091 transitions. [2023-12-20 03:10:26,268 INFO L78 Accepts]: Start accepts. Automaton has 54140 states and 70091 transitions. Word has length 101 [2023-12-20 03:10:26,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:10:26,268 INFO L495 AbstractCegarLoop]: Abstraction has 54140 states and 70091 transitions. [2023-12-20 03:10:26,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 8.344827586206897) internal successors, (242), 28 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:10:26,268 INFO L276 IsEmpty]: Start isEmpty. Operand 54140 states and 70091 transitions. [2023-12-20 03:10:26,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-20 03:10:26,275 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:10:26,275 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:10:26,290 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-20 03:10:26,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 03:10:26,492 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:10:26,492 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:10:26,492 INFO L85 PathProgramCache]: Analyzing trace with hash 969778631, now seen corresponding path program 1 times [2023-12-20 03:10:26,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:10:26,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065099686] [2023-12-20 03:10:26,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:10:26,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:10:26,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:10:26,844 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:10:26,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:10:26,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065099686] [2023-12-20 03:10:26,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065099686] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 03:10:26,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [350955539] [2023-12-20 03:10:26,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:10:26,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 03:10:26,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 03:10:26,846 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) [2023-12-20 03:10:26,901 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-20 03:10:26,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:10:26,994 INFO L262 TraceCheckSpWp]: Trace formula consists of 445 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-20 03:10:26,995 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 03:10:27,724 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:10:27,724 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 03:10:28,270 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:10:28,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [350955539] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 03:10:28,270 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 03:10:28,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 12] total 32 [2023-12-20 03:10:28,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419443520] [2023-12-20 03:10:28,270 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 03:10:28,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-20 03:10:28,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:10:28,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-20 03:10:28,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=902, Unknown=0, NotChecked=0, Total=992 [2023-12-20 03:10:28,271 INFO L87 Difference]: Start difference. First operand 54140 states and 70091 transitions. Second operand has 32 states, 32 states have (on average 8.8125) internal successors, (282), 32 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:11:30,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:11:30,866 INFO L93 Difference]: Finished difference Result 619276 states and 782734 transitions. [2023-12-20 03:11:30,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 872 states. [2023-12-20 03:11:30,866 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 8.8125) internal successors, (282), 32 states have internal predecessors, (282), 0 states have call successors, (0), 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 102 [2023-12-20 03:11:30,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:11:31,917 INFO L225 Difference]: With dead ends: 619276 [2023-12-20 03:11:31,918 INFO L226 Difference]: Without dead ends: 579295 [2023-12-20 03:11:32,055 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1083 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 900 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 390680 ImplicationChecksByTransitivity, 55.4s TimeCoverageRelationStatistics Valid=77291, Invalid=735411, Unknown=0, NotChecked=0, Total=812702 [2023-12-20 03:11:32,060 INFO L413 NwaCegarLoop]: 384 mSDtfsCounter, 21424 mSDsluCounter, 6594 mSDsCounter, 0 mSdLazyCounter, 7816 mSolverCounterSat, 408 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21424 SdHoareTripleChecker+Valid, 6978 SdHoareTripleChecker+Invalid, 8224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 408 IncrementalHoareTripleChecker+Valid, 7816 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2023-12-20 03:11:32,061 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21424 Valid, 6978 Invalid, 8224 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [408 Valid, 7816 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2023-12-20 03:11:32,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579295 states. [2023-12-20 03:11:35,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579295 to 103452. [2023-12-20 03:11:35,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103452 states, 103451 states have (on average 1.3035543397357203) internal successors, (134854), 103451 states have internal predecessors, (134854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:11:35,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103452 states to 103452 states and 134854 transitions. [2023-12-20 03:11:35,540 INFO L78 Accepts]: Start accepts. Automaton has 103452 states and 134854 transitions. Word has length 102 [2023-12-20 03:11:35,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:11:35,540 INFO L495 AbstractCegarLoop]: Abstraction has 103452 states and 134854 transitions. [2023-12-20 03:11:35,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 8.8125) internal successors, (282), 32 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:11:35,541 INFO L276 IsEmpty]: Start isEmpty. Operand 103452 states and 134854 transitions. [2023-12-20 03:11:35,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-12-20 03:11:35,549 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:11:35,550 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:11:35,554 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-20 03:11:35,754 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,SelfDestructingSolverStorable25 [2023-12-20 03:11:35,754 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:11:35,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:11:35,755 INFO L85 PathProgramCache]: Analyzing trace with hash 503506972, now seen corresponding path program 1 times [2023-12-20 03:11:35,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:11:35,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277334791] [2023-12-20 03:11:35,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:11:35,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:11:35,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:11:35,787 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-20 03:11:35,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:11:35,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277334791] [2023-12-20 03:11:35,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277334791] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:11:35,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:11:35,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 03:11:35,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363681978] [2023-12-20 03:11:35,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:11:35,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 03:11:35,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:11:35,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 03:11:35,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:11:35,789 INFO L87 Difference]: Start difference. First operand 103452 states and 134854 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:11:36,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:11:36,673 INFO L93 Difference]: Finished difference Result 175769 states and 229415 transitions. [2023-12-20 03:11:36,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 03:11:36,673 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 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 103 [2023-12-20 03:11:36,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:11:36,765 INFO L225 Difference]: With dead ends: 175769 [2023-12-20 03:11:36,765 INFO L226 Difference]: Without dead ends: 72424 [2023-12-20 03:11:36,813 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:11:36,814 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 81 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-20 03:11:36,814 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 134 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-20 03:11:36,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72424 states. [2023-12-20 03:11:37,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72424 to 72424. [2023-12-20 03:11:37,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72424 states, 72423 states have (on average 1.2794001905472019) internal successors, (92658), 72423 states have internal predecessors, (92658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:11:37,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72424 states to 72424 states and 92658 transitions. [2023-12-20 03:11:37,603 INFO L78 Accepts]: Start accepts. Automaton has 72424 states and 92658 transitions. Word has length 103 [2023-12-20 03:11:37,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:11:37,604 INFO L495 AbstractCegarLoop]: Abstraction has 72424 states and 92658 transitions. [2023-12-20 03:11:37,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:11:37,604 INFO L276 IsEmpty]: Start isEmpty. Operand 72424 states and 92658 transitions. [2023-12-20 03:11:37,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-12-20 03:11:37,610 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:11:37,610 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:11:37,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-12-20 03:11:37,610 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:11:37,610 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:11:37,610 INFO L85 PathProgramCache]: Analyzing trace with hash -218879738, now seen corresponding path program 1 times [2023-12-20 03:11:37,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:11:37,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767028758] [2023-12-20 03:11:37,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:11:37,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:11:37,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:11:38,704 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:11:38,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:11:38,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767028758] [2023-12-20 03:11:38,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767028758] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 03:11:38,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1918211517] [2023-12-20 03:11:38,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:11:38,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 03:11:38,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 03:11:38,706 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) [2023-12-20 03:11:38,708 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-20 03:11:38,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:11:38,826 INFO L262 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-20 03:11:38,828 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 03:11:39,929 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:11:39,930 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 03:11:41,478 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:11:41,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1918211517] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 03:11:41,479 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 03:11:41,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 48 [2023-12-20 03:11:41,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653967251] [2023-12-20 03:11:41,479 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 03:11:41,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-12-20 03:11:41,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:11:41,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-12-20 03:11:41,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=2099, Unknown=0, NotChecked=0, Total=2256 [2023-12-20 03:11:41,480 INFO L87 Difference]: Start difference. First operand 72424 states and 92658 transitions. Second operand has 48 states, 48 states have (on average 5.791666666666667) internal successors, (278), 48 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:12:19,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:12:19,041 INFO L93 Difference]: Finished difference Result 378766 states and 478156 transitions. [2023-12-20 03:12:19,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 214 states. [2023-12-20 03:12:19,068 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 5.791666666666667) internal successors, (278), 48 states have internal predecessors, (278), 0 states have call successors, (0), 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 103 [2023-12-20 03:12:19,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:12:19,479 INFO L225 Difference]: With dead ends: 378766 [2023-12-20 03:12:19,479 INFO L226 Difference]: Without dead ends: 327602 [2023-12-20 03:12:19,573 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 434 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 258 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22479 ImplicationChecksByTransitivity, 30.7s TimeCoverageRelationStatistics Valid=8357, Invalid=58983, Unknown=0, NotChecked=0, Total=67340 [2023-12-20 03:12:19,574 INFO L413 NwaCegarLoop]: 795 mSDtfsCounter, 6218 mSDsluCounter, 20801 mSDsCounter, 0 mSdLazyCounter, 10816 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6218 SdHoareTripleChecker+Valid, 21596 SdHoareTripleChecker+Invalid, 10824 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 10816 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2023-12-20 03:12:19,574 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6218 Valid, 21596 Invalid, 10824 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [8 Valid, 10816 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2023-12-20 03:12:19,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327602 states. [2023-12-20 03:12:22,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327602 to 107403. [2023-12-20 03:12:22,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107403 states, 107402 states have (on average 1.2828066516452208) internal successors, (137776), 107402 states have internal predecessors, (137776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:12:22,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107403 states to 107403 states and 137776 transitions. [2023-12-20 03:12:22,394 INFO L78 Accepts]: Start accepts. Automaton has 107403 states and 137776 transitions. Word has length 103 [2023-12-20 03:12:22,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:12:22,394 INFO L495 AbstractCegarLoop]: Abstraction has 107403 states and 137776 transitions. [2023-12-20 03:12:22,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 5.791666666666667) internal successors, (278), 48 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:12:22,394 INFO L276 IsEmpty]: Start isEmpty. Operand 107403 states and 137776 transitions. [2023-12-20 03:12:22,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-12-20 03:12:22,618 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:12:22,618 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] [2023-12-20 03:12:22,633 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-20 03:12:22,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-12-20 03:12:22,819 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:12:22,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:12:22,820 INFO L85 PathProgramCache]: Analyzing trace with hash 29065800, now seen corresponding path program 1 times [2023-12-20 03:12:22,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:12:22,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245940875] [2023-12-20 03:12:22,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:12:22,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:12:22,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:12:22,873 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:12:22,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:12:22,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245940875] [2023-12-20 03:12:22,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245940875] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:12:22,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:12:22,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 03:12:22,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610314555] [2023-12-20 03:12:22,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:12:22,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 03:12:22,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:12:22,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 03:12:22,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:12:22,875 INFO L87 Difference]: Start difference. First operand 107403 states and 137776 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:12:23,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:12:23,548 INFO L93 Difference]: Finished difference Result 214695 states and 275434 transitions. [2023-12-20 03:12:23,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 03:12:23,549 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 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 103 [2023-12-20 03:12:23,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:12:23,673 INFO L225 Difference]: With dead ends: 214695 [2023-12-20 03:12:23,673 INFO L226 Difference]: Without dead ends: 107405 [2023-12-20 03:12:23,725 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 [2023-12-20 03:12:23,726 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 54 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:12:23,726 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 222 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:12:23,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107405 states. [2023-12-20 03:12:24,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107405 to 102823. [2023-12-20 03:12:24,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102823 states, 102822 states have (on average 1.2599540954270487) internal successors, (129551), 102822 states have internal predecessors, (129551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:12:25,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102823 states to 102823 states and 129551 transitions. [2023-12-20 03:12:25,060 INFO L78 Accepts]: Start accepts. Automaton has 102823 states and 129551 transitions. Word has length 103 [2023-12-20 03:12:25,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:12:25,060 INFO L495 AbstractCegarLoop]: Abstraction has 102823 states and 129551 transitions. [2023-12-20 03:12:25,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:12:25,060 INFO L276 IsEmpty]: Start isEmpty. Operand 102823 states and 129551 transitions. [2023-12-20 03:12:25,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-12-20 03:12:25,064 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:12:25,064 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:12:25,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-12-20 03:12:25,065 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:12:25,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:12:25,065 INFO L85 PathProgramCache]: Analyzing trace with hash -1939266616, now seen corresponding path program 1 times [2023-12-20 03:12:25,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:12:25,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112980364] [2023-12-20 03:12:25,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:12:25,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:12:25,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:12:25,888 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:12:25,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:12:25,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112980364] [2023-12-20 03:12:25,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112980364] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 03:12:25,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [97100897] [2023-12-20 03:12:25,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:12:25,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 03:12:25,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 03:12:25,890 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) [2023-12-20 03:12:25,891 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-20 03:12:26,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:12:26,016 INFO L262 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 37 conjunts are in the unsatisfiable core [2023-12-20 03:12:26,018 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 03:12:28,264 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:12:28,264 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 03:12:30,130 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:12:30,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [97100897] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 03:12:30,131 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 03:12:30,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 18, 19] total 58 [2023-12-20 03:12:30,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118022514] [2023-12-20 03:12:30,131 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 03:12:30,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2023-12-20 03:12:30,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:12:30,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2023-12-20 03:12:30,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=230, Invalid=3192, Unknown=0, NotChecked=0, Total=3422 [2023-12-20 03:12:30,133 INFO L87 Difference]: Start difference. First operand 102823 states and 129551 transitions. Second operand has 59 states, 59 states have (on average 4.813559322033898) internal successors, (284), 58 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:13:56,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:13:56,418 INFO L93 Difference]: Finished difference Result 599849 states and 747978 transitions. [2023-12-20 03:13:56,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 543 states. [2023-12-20 03:13:56,418 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 4.813559322033898) internal successors, (284), 58 states have internal predecessors, (284), 0 states have call successors, (0), 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 103 [2023-12-20 03:13:56,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:13:57,471 INFO L225 Difference]: With dead ends: 599849 [2023-12-20 03:13:57,471 INFO L226 Difference]: Without dead ends: 551094 [2023-12-20 03:13:57,652 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 766 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 596 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151459 ImplicationChecksByTransitivity, 71.7s TimeCoverageRelationStatistics Valid=38064, Invalid=318942, Unknown=0, NotChecked=0, Total=357006 [2023-12-20 03:13:57,652 INFO L413 NwaCegarLoop]: 1373 mSDtfsCounter, 10274 mSDsluCounter, 39661 mSDsCounter, 0 mSdLazyCounter, 17628 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10274 SdHoareTripleChecker+Valid, 41034 SdHoareTripleChecker+Invalid, 17720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 17628 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.7s IncrementalHoareTripleChecker+Time [2023-12-20 03:13:57,652 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10274 Valid, 41034 Invalid, 17720 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [92 Valid, 17628 Invalid, 0 Unknown, 0 Unchecked, 10.7s Time] [2023-12-20 03:13:58,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551094 states. [2023-12-20 03:14:01,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551094 to 124407. [2023-12-20 03:14:01,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124407 states, 124406 states have (on average 1.2623748050737102) internal successors, (157047), 124406 states have internal predecessors, (157047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:14:01,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124407 states to 124407 states and 157047 transitions. [2023-12-20 03:14:01,498 INFO L78 Accepts]: Start accepts. Automaton has 124407 states and 157047 transitions. Word has length 103 [2023-12-20 03:14:01,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:14:01,499 INFO L495 AbstractCegarLoop]: Abstraction has 124407 states and 157047 transitions. [2023-12-20 03:14:01,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 4.813559322033898) internal successors, (284), 58 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:14:01,499 INFO L276 IsEmpty]: Start isEmpty. Operand 124407 states and 157047 transitions. [2023-12-20 03:14:01,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-12-20 03:14:01,504 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:14:01,504 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:14:01,511 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-20 03:14:01,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 03:14:01,709 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:14:01,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:14:01,710 INFO L85 PathProgramCache]: Analyzing trace with hash -833523199, now seen corresponding path program 1 times [2023-12-20 03:14:01,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:14:01,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345554445] [2023-12-20 03:14:01,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:14:01,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:14:01,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:14:02,056 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:14:02,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:14:02,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345554445] [2023-12-20 03:14:02,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345554445] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 03:14:02,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1438480812] [2023-12-20 03:14:02,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:14:02,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 03:14:02,056 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 03:14:02,057 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) [2023-12-20 03:14:02,059 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-20 03:14:02,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:14:02,170 INFO L262 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-20 03:14:02,172 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 03:14:02,574 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:14:02,574 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 03:14:03,181 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:14:03,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1438480812] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 03:14:03,181 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 03:14:03,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11, 11] total 27 [2023-12-20 03:14:03,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937277331] [2023-12-20 03:14:03,181 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 03:14:03,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-12-20 03:14:03,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:14:03,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-12-20 03:14:03,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=627, Unknown=0, NotChecked=0, Total=702 [2023-12-20 03:14:03,182 INFO L87 Difference]: Start difference. First operand 124407 states and 157047 transitions. Second operand has 27 states, 27 states have (on average 10.481481481481481) internal successors, (283), 27 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:14:39,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:14:39,694 INFO L93 Difference]: Finished difference Result 516780 states and 646104 transitions. [2023-12-20 03:14:39,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 657 states. [2023-12-20 03:14:39,695 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 10.481481481481481) internal successors, (283), 27 states have internal predecessors, (283), 0 states have call successors, (0), 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 103 [2023-12-20 03:14:39,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:14:40,581 INFO L225 Difference]: With dead ends: 516780 [2023-12-20 03:14:40,581 INFO L226 Difference]: Without dead ends: 426138 [2023-12-20 03:14:40,701 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 868 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 680 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216577 ImplicationChecksByTransitivity, 30.6s TimeCoverageRelationStatistics Valid=47546, Invalid=416896, Unknown=0, NotChecked=0, Total=464442 [2023-12-20 03:14:40,702 INFO L413 NwaCegarLoop]: 560 mSDtfsCounter, 5825 mSDsluCounter, 6843 mSDsCounter, 0 mSdLazyCounter, 8648 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5825 SdHoareTripleChecker+Valid, 7403 SdHoareTripleChecker+Invalid, 8694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 8648 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2023-12-20 03:14:40,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5825 Valid, 7403 Invalid, 8694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 8648 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2023-12-20 03:14:40,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426138 states. [2023-12-20 03:14:43,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426138 to 134476. [2023-12-20 03:14:43,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134476 states, 134475 states have (on average 1.2563227365681353) internal successors, (168944), 134475 states have internal predecessors, (168944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:14:43,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134476 states to 134476 states and 168944 transitions. [2023-12-20 03:14:43,482 INFO L78 Accepts]: Start accepts. Automaton has 134476 states and 168944 transitions. Word has length 103 [2023-12-20 03:14:43,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:14:43,482 INFO L495 AbstractCegarLoop]: Abstraction has 134476 states and 168944 transitions. [2023-12-20 03:14:43,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 10.481481481481481) internal successors, (283), 27 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:14:43,483 INFO L276 IsEmpty]: Start isEmpty. Operand 134476 states and 168944 transitions. [2023-12-20 03:14:43,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-12-20 03:14:43,488 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:14:43,489 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:14:43,780 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-20 03:14:43,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 03:14:43,956 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:14:43,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:14:43,957 INFO L85 PathProgramCache]: Analyzing trace with hash -350849956, now seen corresponding path program 1 times [2023-12-20 03:14:43,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:14:43,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221431619] [2023-12-20 03:14:43,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:14:43,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:14:43,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:14:44,115 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:14:44,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:14:44,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221431619] [2023-12-20 03:14:44,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221431619] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 03:14:44,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [241017065] [2023-12-20 03:14:44,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:14:44,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 03:14:44,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 03:14:44,117 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) [2023-12-20 03:14:44,119 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-20 03:14:44,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:14:44,235 INFO L262 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-20 03:14:44,237 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 03:14:44,846 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:14:44,847 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 03:14:45,294 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:14:45,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [241017065] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 03:14:45,294 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 03:14:45,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 10] total 22 [2023-12-20 03:14:45,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780394452] [2023-12-20 03:14:45,294 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 03:14:45,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-20 03:14:45,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:14:45,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-20 03:14:45,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=390, Unknown=0, NotChecked=0, Total=462 [2023-12-20 03:14:45,295 INFO L87 Difference]: Start difference. First operand 134476 states and 168944 transitions. Second operand has 22 states, 22 states have (on average 11.863636363636363) internal successors, (261), 22 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) [2023-12-20 03:14:47,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:14:47,479 INFO L93 Difference]: Finished difference Result 330651 states and 412912 transitions. [2023-12-20 03:14:47,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-20 03:14:47,480 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 11.863636363636363) internal successors, (261), 22 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 104 [2023-12-20 03:14:47,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:14:47,852 INFO L225 Difference]: With dead ends: 330651 [2023-12-20 03:14:47,852 INFO L226 Difference]: Without dead ends: 287430 [2023-12-20 03:14:48,125 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 193 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 465 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=537, Invalid=1913, Unknown=0, NotChecked=0, Total=2450 [2023-12-20 03:14:48,125 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 1482 mSDsluCounter, 1546 mSDsCounter, 0 mSdLazyCounter, 1497 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1482 SdHoareTripleChecker+Valid, 1716 SdHoareTripleChecker+Invalid, 1505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-20 03:14:48,125 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1482 Valid, 1716 Invalid, 1505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1497 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-20 03:14:48,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287430 states. [2023-12-20 03:14:50,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287430 to 149931. [2023-12-20 03:14:50,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149931 states, 149930 states have (on average 1.2551590742346428) internal successors, (188186), 149930 states have internal predecessors, (188186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:14:50,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149931 states to 149931 states and 188186 transitions. [2023-12-20 03:14:50,285 INFO L78 Accepts]: Start accepts. Automaton has 149931 states and 188186 transitions. Word has length 104 [2023-12-20 03:14:50,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:14:50,285 INFO L495 AbstractCegarLoop]: Abstraction has 149931 states and 188186 transitions. [2023-12-20 03:14:50,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 11.863636363636363) internal successors, (261), 22 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) [2023-12-20 03:14:50,285 INFO L276 IsEmpty]: Start isEmpty. Operand 149931 states and 188186 transitions. [2023-12-20 03:14:50,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-12-20 03:14:50,291 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:14:50,291 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:14:50,295 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-12-20 03:14:50,495 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,SelfDestructingSolverStorable31 [2023-12-20 03:14:50,496 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:14:50,496 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:14:50,496 INFO L85 PathProgramCache]: Analyzing trace with hash 1340152130, now seen corresponding path program 1 times [2023-12-20 03:14:50,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:14:50,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277004473] [2023-12-20 03:14:50,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:14:50,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:14:50,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:14:51,816 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:14:51,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:14:51,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277004473] [2023-12-20 03:14:51,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277004473] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 03:14:51,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1933304991] [2023-12-20 03:14:51,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:14:51,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 03:14:51,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 03:14:51,819 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) [2023-12-20 03:14:51,820 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-20 03:14:51,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:14:51,924 INFO L262 TraceCheckSpWp]: Trace formula consists of 446 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-20 03:14:51,925 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 03:14:52,079 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-20 03:14:52,079 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 03:14:52,382 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-20 03:14:52,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1933304991] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 03:14:52,383 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 03:14:52,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 6, 6] total 31 [2023-12-20 03:14:52,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153226865] [2023-12-20 03:14:52,383 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 03:14:52,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-12-20 03:14:52,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:14:52,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-12-20 03:14:52,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=849, Unknown=0, NotChecked=0, Total=930 [2023-12-20 03:14:52,385 INFO L87 Difference]: Start difference. First operand 149931 states and 188186 transitions. Second operand has 31 states, 31 states have (on average 8.96774193548387) internal successors, (278), 31 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:14:57,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:14:57,450 INFO L93 Difference]: Finished difference Result 403709 states and 506746 transitions. [2023-12-20 03:14:57,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2023-12-20 03:14:57,450 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 8.96774193548387) internal successors, (278), 31 states have internal predecessors, (278), 0 states have call successors, (0), 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 104 [2023-12-20 03:14:57,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:14:58,219 INFO L225 Difference]: With dead ends: 403709 [2023-12-20 03:14:58,219 INFO L226 Difference]: Without dead ends: 253815 [2023-12-20 03:14:58,279 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 200 SyntacticMatches, 1 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4301 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1817, Invalid=12225, Unknown=0, NotChecked=0, Total=14042 [2023-12-20 03:14:58,281 INFO L413 NwaCegarLoop]: 239 mSDtfsCounter, 3341 mSDsluCounter, 5002 mSDsCounter, 0 mSdLazyCounter, 3120 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3341 SdHoareTripleChecker+Valid, 5241 SdHoareTripleChecker+Invalid, 3129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 3120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-12-20 03:14:58,281 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3341 Valid, 5241 Invalid, 3129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 3120 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-12-20 03:14:58,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253815 states. [2023-12-20 03:15:00,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253815 to 186862. [2023-12-20 03:15:00,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186862 states, 186861 states have (on average 1.253445074146023) internal successors, (234220), 186861 states have internal predecessors, (234220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:15:00,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186862 states to 186862 states and 234220 transitions. [2023-12-20 03:15:00,800 INFO L78 Accepts]: Start accepts. Automaton has 186862 states and 234220 transitions. Word has length 104 [2023-12-20 03:15:00,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:15:00,801 INFO L495 AbstractCegarLoop]: Abstraction has 186862 states and 234220 transitions. [2023-12-20 03:15:00,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 8.96774193548387) internal successors, (278), 31 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:15:00,801 INFO L276 IsEmpty]: Start isEmpty. Operand 186862 states and 234220 transitions. [2023-12-20 03:15:00,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-12-20 03:15:00,806 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:15:00,806 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:15:00,810 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-20 03:15:01,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 03:15:01,011 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:15:01,011 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:15:01,011 INFO L85 PathProgramCache]: Analyzing trace with hash 739161207, now seen corresponding path program 1 times [2023-12-20 03:15:01,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:15:01,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617249564] [2023-12-20 03:15:01,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:15:01,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:15:01,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:15:01,045 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-20 03:15:01,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:15:01,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617249564] [2023-12-20 03:15:01,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617249564] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-20 03:15:01,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-20 03:15:01,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-20 03:15:01,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768170914] [2023-12-20 03:15:01,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-20 03:15:01,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-20 03:15:01,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:15:01,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-20 03:15:01,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-20 03:15:01,046 INFO L87 Difference]: Start difference. First operand 186862 states and 234220 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:15:02,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:15:02,228 INFO L93 Difference]: Finished difference Result 325057 states and 407421 transitions. [2023-12-20 03:15:02,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-20 03:15:02,228 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 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 104 [2023-12-20 03:15:02,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:15:02,408 INFO L225 Difference]: With dead ends: 325057 [2023-12-20 03:15:02,408 INFO L226 Difference]: Without dead ends: 138330 [2023-12-20 03:15:02,466 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 [2023-12-20 03:15:02,466 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 78 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-20 03:15:02,466 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 118 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-20 03:15:02,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138330 states. [2023-12-20 03:15:03,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138330 to 138330. [2023-12-20 03:15:03,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138330 states, 138329 states have (on average 1.233110916727512) internal successors, (170575), 138329 states have internal predecessors, (170575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:15:04,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138330 states to 138330 states and 170575 transitions. [2023-12-20 03:15:04,063 INFO L78 Accepts]: Start accepts. Automaton has 138330 states and 170575 transitions. Word has length 104 [2023-12-20 03:15:04,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:15:04,076 INFO L495 AbstractCegarLoop]: Abstraction has 138330 states and 170575 transitions. [2023-12-20 03:15:04,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:15:04,076 INFO L276 IsEmpty]: Start isEmpty. Operand 138330 states and 170575 transitions. [2023-12-20 03:15:04,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-12-20 03:15:04,079 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:15:04,082 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-20 03:15:04,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-12-20 03:15:04,083 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:15:04,083 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:15:04,083 INFO L85 PathProgramCache]: Analyzing trace with hash 1092994019, now seen corresponding path program 1 times [2023-12-20 03:15:04,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:15:04,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372149803] [2023-12-20 03:15:04,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:15:04,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:15:04,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:15:04,622 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:15:04,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:15:04,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372149803] [2023-12-20 03:15:04,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372149803] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 03:15:04,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [825196747] [2023-12-20 03:15:04,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:15:04,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 03:15:04,623 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 03:15:04,623 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) [2023-12-20 03:15:04,667 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-20 03:15:04,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:15:04,760 INFO L262 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 35 conjunts are in the unsatisfiable core [2023-12-20 03:15:04,762 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 03:15:06,558 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:15:06,558 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 03:15:09,738 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:15:09,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [825196747] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 03:15:09,738 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 03:15:09,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 20] total 55 [2023-12-20 03:15:09,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766049761] [2023-12-20 03:15:09,739 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 03:15:09,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2023-12-20 03:15:09,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:15:09,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2023-12-20 03:15:09,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=2779, Unknown=0, NotChecked=0, Total=2970 [2023-12-20 03:15:09,740 INFO L87 Difference]: Start difference. First operand 138330 states and 170575 transitions. Second operand has 55 states, 55 states have (on average 5.218181818181818) internal successors, (287), 55 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:15:56,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:15:56,700 INFO L93 Difference]: Finished difference Result 413867 states and 504628 transitions. [2023-12-20 03:15:56,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 280 states. [2023-12-20 03:15:56,700 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 5.218181818181818) internal successors, (287), 55 states have internal predecessors, (287), 0 states have call successors, (0), 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 104 [2023-12-20 03:15:56,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:15:57,184 INFO L225 Difference]: With dead ends: 413867 [2023-12-20 03:15:57,184 INFO L226 Difference]: Without dead ends: 379551 [2023-12-20 03:15:57,264 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 501 GetRequests, 171 SyntacticMatches, 1 SemanticMatches, 329 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37948 ImplicationChecksByTransitivity, 37.6s TimeCoverageRelationStatistics Valid=12571, Invalid=96659, Unknown=0, NotChecked=0, Total=109230 [2023-12-20 03:15:57,264 INFO L413 NwaCegarLoop]: 848 mSDtfsCounter, 6494 mSDsluCounter, 25764 mSDsCounter, 0 mSdLazyCounter, 10968 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6494 SdHoareTripleChecker+Valid, 26612 SdHoareTripleChecker+Invalid, 10993 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 10968 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time [2023-12-20 03:15:57,265 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6494 Valid, 26612 Invalid, 10993 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [25 Valid, 10968 Invalid, 0 Unknown, 0 Unchecked, 9.6s Time] [2023-12-20 03:15:57,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379551 states. [2023-12-20 03:16:00,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379551 to 162983. [2023-12-20 03:16:00,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162983 states, 162982 states have (on average 1.230283098747101) internal successors, (200514), 162982 states have internal predecessors, (200514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:16:00,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162983 states to 162983 states and 200514 transitions. [2023-12-20 03:16:00,760 INFO L78 Accepts]: Start accepts. Automaton has 162983 states and 200514 transitions. Word has length 104 [2023-12-20 03:16:00,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-20 03:16:00,761 INFO L495 AbstractCegarLoop]: Abstraction has 162983 states and 200514 transitions. [2023-12-20 03:16:00,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 5.218181818181818) internal successors, (287), 55 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:16:00,761 INFO L276 IsEmpty]: Start isEmpty. Operand 162983 states and 200514 transitions. [2023-12-20 03:16:00,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-12-20 03:16:00,764 INFO L187 NwaCegarLoop]: Found error trace [2023-12-20 03:16:00,764 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-20 03:16:00,769 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-20 03:16:00,969 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,SelfDestructingSolverStorable34 [2023-12-20 03:16:00,969 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-20 03:16:00,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-20 03:16:00,970 INFO L85 PathProgramCache]: Analyzing trace with hash -1821546295, now seen corresponding path program 1 times [2023-12-20 03:16:00,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-20 03:16:00,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30217202] [2023-12-20 03:16:00,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:16:00,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-20 03:16:00,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:16:01,714 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:16:01,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-20 03:16:01,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30217202] [2023-12-20 03:16:01,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30217202] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-20 03:16:01,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [916936143] [2023-12-20 03:16:01,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-20 03:16:01,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-20 03:16:01,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-20 03:16:01,716 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-20 03:16:01,718 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-20 03:16:01,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-20 03:16:01,833 INFO L262 TraceCheckSpWp]: Trace formula consists of 446 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-20 03:16:01,835 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-20 03:16:02,321 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:16:02,322 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-20 03:16:02,820 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-20 03:16:02,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [916936143] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-20 03:16:02,821 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-20 03:16:02,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 12] total 35 [2023-12-20 03:16:02,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575881818] [2023-12-20 03:16:02,821 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-20 03:16:02,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-12-20 03:16:02,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-20 03:16:02,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-12-20 03:16:02,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=1059, Unknown=0, NotChecked=0, Total=1190 [2023-12-20 03:16:02,822 INFO L87 Difference]: Start difference. First operand 162983 states and 200514 transitions. Second operand has 35 states, 35 states have (on average 8.2) internal successors, (287), 35 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-20 03:16:05,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-20 03:16:05,102 INFO L93 Difference]: Finished difference Result 300860 states and 369871 transitions. [2023-12-20 03:16:05,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-12-20 03:16:05,102 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 8.2) internal successors, (287), 35 states have internal predecessors, (287), 0 states have call successors, (0), 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 104 [2023-12-20 03:16:05,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-20 03:16:05,673 INFO L225 Difference]: With dead ends: 300860 [2023-12-20 03:16:05,673 INFO L226 Difference]: Without dead ends: 254117 [2023-12-20 03:16:05,731 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 186 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 858 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=914, Invalid=3246, Unknown=0, NotChecked=0, Total=4160 [2023-12-20 03:16:05,732 INFO L413 NwaCegarLoop]: 388 mSDtfsCounter, 2339 mSDsluCounter, 5075 mSDsCounter, 0 mSdLazyCounter, 1092 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2339 SdHoareTripleChecker+Valid, 5463 SdHoareTripleChecker+Invalid, 1105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1092 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-20 03:16:05,732 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2339 Valid, 5463 Invalid, 1105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1092 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-20 03:16:05,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254117 states.