/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 13:44:12,874 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 13:44:12,940 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-21 13:44:12,943 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 13:44:12,943 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 13:44:12,964 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 13:44:12,965 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 13:44:12,965 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 13:44:12,966 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 13:44:12,968 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 13:44:12,969 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 13:44:12,969 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 13:44:12,970 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 13:44:12,971 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 13:44:12,971 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 13:44:12,971 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 13:44:12,971 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 13:44:12,971 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 13:44:12,971 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-21 13:44:12,972 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 13:44:12,972 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 13:44:12,972 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 13:44:12,972 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 13:44:12,972 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 13:44:12,972 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 13:44:12,973 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 13:44:12,973 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 13:44:12,973 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 13:44:12,973 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 13:44:12,974 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 13:44:12,974 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 13:44:12,974 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 13:44:12,975 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 13:44:12,975 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 13:44:12,975 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 13:44:12,975 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 13:44:12,975 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-21 13:44:12,975 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-21 13:44:12,975 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 13:44:12,975 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 13:44:12,976 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 13:44:12,976 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 13:44:12,976 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 13:44:12,976 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-21 13:44:13,147 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 13:44:13,171 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 13:44:13,172 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 13:44:13,173 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 13:44:13,173 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 13:44:13,174 INFO L431 ainManager$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 [2023-12-21 13:44:14,225 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 13:44:14,375 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 13:44:14,375 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 [2023-12-21 13:44:14,381 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2865cee7d/c4c90e133e944e3cb8e738a55c2919a0/FLAGcd4e550d4 [2023-12-21 13:44:14,391 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2865cee7d/c4c90e133e944e3cb8e738a55c2919a0 [2023-12-21 13:44:14,392 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 13:44:14,393 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 13:44:14,394 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 13:44:14,394 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 13:44:14,398 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 13:44:14,399 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 01:44:14" (1/1) ... [2023-12-21 13:44:14,400 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@531bda1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:44:14, skipping insertion in model container [2023-12-21 13:44:14,400 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 01:44:14" (1/1) ... [2023-12-21 13:44:14,429 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 13:44:14,568 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] [2023-12-21 13:44:14,581 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] [2023-12-21 13:44:14,588 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 13:44:14,603 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 13:44:14,654 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] [2023-12-21 13:44:14,661 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] [2023-12-21 13:44:14,666 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 13:44:14,677 INFO L206 MainTranslator]: Completed translation [2023-12-21 13:44:14,677 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:44:14 WrapperNode [2023-12-21 13:44:14,677 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 13:44:14,678 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 13:44:14,678 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 13:44:14,678 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 13:44:14,683 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:44:14" (1/1) ... [2023-12-21 13:44:14,690 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:44:14" (1/1) ... [2023-12-21 13:44:14,712 INFO L138 Inliner]: procedures = 22, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 502 [2023-12-21 13:44:14,713 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 13:44:14,713 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 13:44:14,713 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 13:44:14,714 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 13:44:14,721 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:44:14" (1/1) ... [2023-12-21 13:44:14,721 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:44:14" (1/1) ... [2023-12-21 13:44:14,731 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:44:14" (1/1) ... [2023-12-21 13:44:14,748 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-21 13:44:14,748 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:44:14" (1/1) ... [2023-12-21 13:44:14,749 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:44:14" (1/1) ... [2023-12-21 13:44:14,753 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:44:14" (1/1) ... [2023-12-21 13:44:14,755 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:44:14" (1/1) ... [2023-12-21 13:44:14,757 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:44:14" (1/1) ... [2023-12-21 13:44:14,758 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:44:14" (1/1) ... [2023-12-21 13:44:14,771 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 13:44:14,772 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 13:44:14,772 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 13:44:14,772 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 13:44:14,773 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:44:14" (1/1) ... [2023-12-21 13:44:14,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 13:44:14,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:44:14,801 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-21 13:44:14,820 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-21 13:44:14,827 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 13:44:14,828 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-21 13:44:14,828 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 13:44:14,828 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 13:44:14,937 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 13:44:14,938 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 13:44:15,233 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 13:44:15,255 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 13:44:15,255 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-12-21 13:44:15,256 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 01:44:15 BoogieIcfgContainer [2023-12-21 13:44:15,256 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 13:44:15,257 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 13:44:15,257 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 13:44:15,259 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 13:44:15,259 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 01:44:14" (1/3) ... [2023-12-21 13:44:15,260 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@241a49a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 01:44:15, skipping insertion in model container [2023-12-21 13:44:15,260 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:44:14" (2/3) ... [2023-12-21 13:44:15,260 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@241a49a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 01:44:15, skipping insertion in model container [2023-12-21 13:44:15,260 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 01:44:15" (3/3) ... [2023-12-21 13:44:15,261 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2023-12-21 13:44:15,271 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 13:44:15,271 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-21 13:44:15,300 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 13:44:15,304 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;@5e975439, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 13:44:15,304 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-21 13:44:15,307 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) [2023-12-21 13:44:15,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-12-21 13:44:15,314 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:44:15,314 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] [2023-12-21 13:44:15,315 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:44:15,318 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:44:15,318 INFO L85 PathProgramCache]: Analyzing trace with hash -1236458848, now seen corresponding path program 1 times [2023-12-21 13:44:15,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:44:15,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597947095] [2023-12-21 13:44:15,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:44:15,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:44:15,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:44:15,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:44:15,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:44:15,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597947095] [2023-12-21 13:44:15,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597947095] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:44:15,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:44:15,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 13:44:15,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821322807] [2023-12-21 13:44:15,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:44:15,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 13:44:15,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:44:15,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 13:44:15,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:44:15,700 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) [2023-12-21 13:44:15,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:44:15,911 INFO L93 Difference]: Finished difference Result 408 states and 655 transitions. [2023-12-21 13:44:15,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 13:44:15,913 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 [2023-12-21 13:44:15,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:44:15,927 INFO L225 Difference]: With dead ends: 408 [2023-12-21 13:44:15,927 INFO L226 Difference]: Without dead ends: 352 [2023-12-21 13:44:15,930 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 [2023-12-21 13:44:15,934 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 [2023-12-21 13:44:15,935 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] [2023-12-21 13:44:15,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2023-12-21 13:44:15,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 154. [2023-12-21 13:44:15,969 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) [2023-12-21 13:44:15,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 218 transitions. [2023-12-21 13:44:15,971 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 218 transitions. Word has length 47 [2023-12-21 13:44:15,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:44:15,971 INFO L495 AbstractCegarLoop]: Abstraction has 154 states and 218 transitions. [2023-12-21 13:44:15,971 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) [2023-12-21 13:44:15,971 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 218 transitions. [2023-12-21 13:44:15,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-12-21 13:44:15,972 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:44:15,972 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] [2023-12-21 13:44:15,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-21 13:44:15,973 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:44:15,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:44:15,973 INFO L85 PathProgramCache]: Analyzing trace with hash 149827959, now seen corresponding path program 1 times [2023-12-21 13:44:15,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:44:15,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133006726] [2023-12-21 13:44:15,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:44:15,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:44:15,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:44:16,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:44:16,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:44:16,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133006726] [2023-12-21 13:44:16,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133006726] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:44:16,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:44:16,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:44:16,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259693409] [2023-12-21 13:44:16,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:44:16,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:44:16,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:44:16,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:44:16,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:44:16,056 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) [2023-12-21 13:44:16,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:44:16,090 INFO L93 Difference]: Finished difference Result 243 states and 351 transitions. [2023-12-21 13:44:16,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:44:16,090 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 [2023-12-21 13:44:16,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:44:16,093 INFO L225 Difference]: With dead ends: 243 [2023-12-21 13:44:16,093 INFO L226 Difference]: Without dead ends: 158 [2023-12-21 13:44:16,094 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:44:16,095 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 [2023-12-21 13:44:16,095 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] [2023-12-21 13:44:16,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2023-12-21 13:44:16,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 156. [2023-12-21 13:44:16,114 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) [2023-12-21 13:44:16,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 219 transitions. [2023-12-21 13:44:16,115 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 219 transitions. Word has length 48 [2023-12-21 13:44:16,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:44:16,115 INFO L495 AbstractCegarLoop]: Abstraction has 156 states and 219 transitions. [2023-12-21 13:44:16,117 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) [2023-12-21 13:44:16,117 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 219 transitions. [2023-12-21 13:44:16,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-12-21 13:44:16,119 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:44:16,119 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] [2023-12-21 13:44:16,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-21 13:44:16,120 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:44:16,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:44:16,121 INFO L85 PathProgramCache]: Analyzing trace with hash 967473249, now seen corresponding path program 1 times [2023-12-21 13:44:16,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:44:16,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744809040] [2023-12-21 13:44:16,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:44:16,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:44:16,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:44:16,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:44:16,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:44:16,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744809040] [2023-12-21 13:44:16,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744809040] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:44:16,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:44:16,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 13:44:16,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962298860] [2023-12-21 13:44:16,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:44:16,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 13:44:16,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:44:16,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 13:44:16,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:44:16,259 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) [2023-12-21 13:44:16,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:44:16,321 INFO L93 Difference]: Finished difference Result 469 states and 689 transitions. [2023-12-21 13:44:16,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 13:44:16,321 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 [2023-12-21 13:44:16,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:44:16,323 INFO L225 Difference]: With dead ends: 469 [2023-12-21 13:44:16,323 INFO L226 Difference]: Without dead ends: 387 [2023-12-21 13:44:16,324 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 [2023-12-21 13:44:16,326 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 [2023-12-21 13:44:16,327 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] [2023-12-21 13:44:16,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2023-12-21 13:44:16,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 247. [2023-12-21 13:44:16,341 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) [2023-12-21 13:44:16,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 358 transitions. [2023-12-21 13:44:16,344 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 358 transitions. Word has length 49 [2023-12-21 13:44:16,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:44:16,349 INFO L495 AbstractCegarLoop]: Abstraction has 247 states and 358 transitions. [2023-12-21 13:44:16,350 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) [2023-12-21 13:44:16,350 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 358 transitions. [2023-12-21 13:44:16,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-12-21 13:44:16,353 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:44:16,353 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] [2023-12-21 13:44:16,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-21 13:44:16,353 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:44:16,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:44:16,353 INFO L85 PathProgramCache]: Analyzing trace with hash 1095295369, now seen corresponding path program 1 times [2023-12-21 13:44:16,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:44:16,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494885813] [2023-12-21 13:44:16,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:44:16,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:44:16,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:44:16,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:44:16,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:44:16,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494885813] [2023-12-21 13:44:16,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494885813] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:44:16,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:44:16,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 13:44:16,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223568207] [2023-12-21 13:44:16,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:44:16,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 13:44:16,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:44:16,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 13:44:16,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:44:16,471 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) [2023-12-21 13:44:16,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:44:16,535 INFO L93 Difference]: Finished difference Result 555 states and 820 transitions. [2023-12-21 13:44:16,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 13:44:16,535 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 [2023-12-21 13:44:16,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:44:16,537 INFO L225 Difference]: With dead ends: 555 [2023-12-21 13:44:16,537 INFO L226 Difference]: Without dead ends: 473 [2023-12-21 13:44:16,540 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 [2023-12-21 13:44:16,544 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 356 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:44:16,545 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [356 Valid, 535 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:44:16,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2023-12-21 13:44:16,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 375. [2023-12-21 13:44:16,554 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) [2023-12-21 13:44:16,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 552 transitions. [2023-12-21 13:44:16,555 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 552 transitions. Word has length 49 [2023-12-21 13:44:16,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:44:16,555 INFO L495 AbstractCegarLoop]: Abstraction has 375 states and 552 transitions. [2023-12-21 13:44:16,555 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) [2023-12-21 13:44:16,556 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 552 transitions. [2023-12-21 13:44:16,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-12-21 13:44:16,557 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:44:16,557 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] [2023-12-21 13:44:16,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-21 13:44:16,557 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:44:16,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:44:16,558 INFO L85 PathProgramCache]: Analyzing trace with hash 1600326517, now seen corresponding path program 1 times [2023-12-21 13:44:16,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:44:16,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545385802] [2023-12-21 13:44:16,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:44:16,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:44:16,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:44:16,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:44:16,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:44:16,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545385802] [2023-12-21 13:44:16,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545385802] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:44:16,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:44:16,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 13:44:16,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123078659] [2023-12-21 13:44:16,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:44:16,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 13:44:16,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:44:16,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 13:44:16,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:44:16,677 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) [2023-12-21 13:44:16,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:44:16,741 INFO L93 Difference]: Finished difference Result 646 states and 959 transitions. [2023-12-21 13:44:16,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 13:44:16,741 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 [2023-12-21 13:44:16,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:44:16,744 INFO L225 Difference]: With dead ends: 646 [2023-12-21 13:44:16,744 INFO L226 Difference]: Without dead ends: 564 [2023-12-21 13:44:16,745 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 [2023-12-21 13:44:16,745 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, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:44:16,746 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [355 Valid, 569 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:44:16,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2023-12-21 13:44:16,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 466. [2023-12-21 13:44:16,753 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) [2023-12-21 13:44:16,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 691 transitions. [2023-12-21 13:44:16,755 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 691 transitions. Word has length 49 [2023-12-21 13:44:16,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:44:16,755 INFO L495 AbstractCegarLoop]: Abstraction has 466 states and 691 transitions. [2023-12-21 13:44:16,755 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) [2023-12-21 13:44:16,755 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 691 transitions. [2023-12-21 13:44:16,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-21 13:44:16,756 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:44:16,756 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] [2023-12-21 13:44:16,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-21 13:44:16,756 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:44:16,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:44:16,757 INFO L85 PathProgramCache]: Analyzing trace with hash -247753770, now seen corresponding path program 1 times [2023-12-21 13:44:16,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:44:16,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099145182] [2023-12-21 13:44:16,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:44:16,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:44:16,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:44:16,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:44:16,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:44:16,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099145182] [2023-12-21 13:44:16,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099145182] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:44:16,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:44:16,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 13:44:16,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575570117] [2023-12-21 13:44:16,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:44:16,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 13:44:16,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:44:16,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 13:44:16,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:44:16,831 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) [2023-12-21 13:44:16,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:44:16,890 INFO L93 Difference]: Finished difference Result 910 states and 1359 transitions. [2023-12-21 13:44:16,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 13:44:16,890 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 [2023-12-21 13:44:16,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:44:16,892 INFO L225 Difference]: With dead ends: 910 [2023-12-21 13:44:16,892 INFO L226 Difference]: Without dead ends: 466 [2023-12-21 13:44:16,892 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-21 13:44:16,893 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, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:44:16,896 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [380 Valid, 78 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:44:16,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2023-12-21 13:44:16,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 466. [2023-12-21 13:44:16,903 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) [2023-12-21 13:44:16,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 681 transitions. [2023-12-21 13:44:16,904 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 681 transitions. Word has length 50 [2023-12-21 13:44:16,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:44:16,905 INFO L495 AbstractCegarLoop]: Abstraction has 466 states and 681 transitions. [2023-12-21 13:44:16,905 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) [2023-12-21 13:44:16,905 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 681 transitions. [2023-12-21 13:44:16,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-12-21 13:44:16,905 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:44:16,905 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] [2023-12-21 13:44:16,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-21 13:44:16,905 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:44:16,906 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:44:16,906 INFO L85 PathProgramCache]: Analyzing trace with hash -1364763558, now seen corresponding path program 1 times [2023-12-21 13:44:16,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:44:16,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868270962] [2023-12-21 13:44:16,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:44:16,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:44:16,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:44:16,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:44:16,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:44:16,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868270962] [2023-12-21 13:44:16,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868270962] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:44:16,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:44:16,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 13:44:16,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529215528] [2023-12-21 13:44:16,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:44:16,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 13:44:16,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:44:16,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 13:44:16,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:44:16,980 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) [2023-12-21 13:44:17,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:44:17,042 INFO L93 Difference]: Finished difference Result 902 states and 1330 transitions. [2023-12-21 13:44:17,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 13:44:17,043 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 [2023-12-21 13:44:17,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:44:17,044 INFO L225 Difference]: With dead ends: 902 [2023-12-21 13:44:17,044 INFO L226 Difference]: Without dead ends: 466 [2023-12-21 13:44:17,045 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-21 13:44:17,046 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 [2023-12-21 13:44:17,046 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] [2023-12-21 13:44:17,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2023-12-21 13:44:17,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 466. [2023-12-21 13:44:17,053 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) [2023-12-21 13:44:17,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 671 transitions. [2023-12-21 13:44:17,054 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 671 transitions. Word has length 51 [2023-12-21 13:44:17,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:44:17,055 INFO L495 AbstractCegarLoop]: Abstraction has 466 states and 671 transitions. [2023-12-21 13:44:17,055 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) [2023-12-21 13:44:17,055 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 671 transitions. [2023-12-21 13:44:17,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-12-21 13:44:17,055 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:44:17,055 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] [2023-12-21 13:44:17,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-21 13:44:17,056 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:44:17,056 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:44:17,056 INFO L85 PathProgramCache]: Analyzing trace with hash 114055254, now seen corresponding path program 1 times [2023-12-21 13:44:17,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:44:17,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050739339] [2023-12-21 13:44:17,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:44:17,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:44:17,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:44:17,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:44:17,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:44:17,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050739339] [2023-12-21 13:44:17,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050739339] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:44:17,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:44:17,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 13:44:17,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125980305] [2023-12-21 13:44:17,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:44:17,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 13:44:17,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:44:17,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 13:44:17,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 13:44:17,113 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) [2023-12-21 13:44:17,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:44:17,171 INFO L93 Difference]: Finished difference Result 906 states and 1315 transitions. [2023-12-21 13:44:17,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 13:44:17,171 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 [2023-12-21 13:44:17,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:44:17,173 INFO L225 Difference]: With dead ends: 906 [2023-12-21 13:44:17,173 INFO L226 Difference]: Without dead ends: 466 [2023-12-21 13:44:17,173 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-21 13:44:17,174 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, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:44:17,174 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [356 Valid, 86 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:44:17,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2023-12-21 13:44:17,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 466. [2023-12-21 13:44:17,179 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) [2023-12-21 13:44:17,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 661 transitions. [2023-12-21 13:44:17,180 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 661 transitions. Word has length 52 [2023-12-21 13:44:17,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:44:17,181 INFO L495 AbstractCegarLoop]: Abstraction has 466 states and 661 transitions. [2023-12-21 13:44:17,181 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) [2023-12-21 13:44:17,181 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 661 transitions. [2023-12-21 13:44:17,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-21 13:44:17,181 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:44:17,181 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] [2023-12-21 13:44:17,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-21 13:44:17,181 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:44:17,182 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:44:17,182 INFO L85 PathProgramCache]: Analyzing trace with hash 456972262, now seen corresponding path program 1 times [2023-12-21 13:44:17,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:44:17,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147241008] [2023-12-21 13:44:17,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:44:17,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:44:17,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:44:17,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:44:17,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:44:17,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147241008] [2023-12-21 13:44:17,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147241008] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:44:17,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:44:17,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-21 13:44:17,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649387909] [2023-12-21 13:44:17,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:44:17,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-21 13:44:17,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:44:17,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-21 13:44:17,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2023-12-21 13:44:17,518 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) [2023-12-21 13:44:17,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:44:17,867 INFO L93 Difference]: Finished difference Result 1272 states and 1819 transitions. [2023-12-21 13:44:17,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-21 13:44:17,867 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 [2023-12-21 13:44:17,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:44:17,870 INFO L225 Difference]: With dead ends: 1272 [2023-12-21 13:44:17,870 INFO L226 Difference]: Without dead ends: 883 [2023-12-21 13:44:17,871 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=135, Invalid=417, Unknown=0, NotChecked=0, Total=552 [2023-12-21 13:44:17,872 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 942 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 13:44:17,872 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [942 Valid, 312 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 288 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 13:44:17,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 883 states. [2023-12-21 13:44:17,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 883 to 466. [2023-12-21 13:44:17,880 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) [2023-12-21 13:44:17,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 657 transitions. [2023-12-21 13:44:17,881 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 657 transitions. Word has length 53 [2023-12-21 13:44:17,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:44:17,881 INFO L495 AbstractCegarLoop]: Abstraction has 466 states and 657 transitions. [2023-12-21 13:44:17,881 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) [2023-12-21 13:44:17,881 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 657 transitions. [2023-12-21 13:44:17,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-12-21 13:44:17,882 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:44:17,882 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] [2023-12-21 13:44:17,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-21 13:44:17,882 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:44:17,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:44:17,883 INFO L85 PathProgramCache]: Analyzing trace with hash 124490686, now seen corresponding path program 1 times [2023-12-21 13:44:17,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:44:17,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088137366] [2023-12-21 13:44:17,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:44:17,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:44:17,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:44:18,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:44:18,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:44:18,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088137366] [2023-12-21 13:44:18,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088137366] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:44:18,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:44:18,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-21 13:44:18,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6379710] [2023-12-21 13:44:18,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:44:18,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-21 13:44:18,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:44:18,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-21 13:44:18,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2023-12-21 13:44:18,124 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) [2023-12-21 13:44:18,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:44:18,501 INFO L93 Difference]: Finished difference Result 1287 states and 1835 transitions. [2023-12-21 13:44:18,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-21 13:44:18,501 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 [2023-12-21 13:44:18,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:44:18,504 INFO L225 Difference]: With dead ends: 1287 [2023-12-21 13:44:18,504 INFO L226 Difference]: Without dead ends: 888 [2023-12-21 13:44:18,504 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 [2023-12-21 13:44:18,505 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 [2023-12-21 13:44:18,505 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] [2023-12-21 13:44:18,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 888 states. [2023-12-21 13:44:18,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 888 to 466. [2023-12-21 13:44:18,514 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) [2023-12-21 13:44:18,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 655 transitions. [2023-12-21 13:44:18,517 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 655 transitions. Word has length 53 [2023-12-21 13:44:18,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:44:18,517 INFO L495 AbstractCegarLoop]: Abstraction has 466 states and 655 transitions. [2023-12-21 13:44:18,517 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) [2023-12-21 13:44:18,518 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 655 transitions. [2023-12-21 13:44:18,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-12-21 13:44:18,518 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:44:18,518 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] [2023-12-21 13:44:18,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-21 13:44:18,518 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:44:18,519 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:44:18,519 INFO L85 PathProgramCache]: Analyzing trace with hash 359546620, now seen corresponding path program 1 times [2023-12-21 13:44:18,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:44:18,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813459726] [2023-12-21 13:44:18,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:44:18,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:44:18,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:44:18,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:44:18,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:44:18,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813459726] [2023-12-21 13:44:18,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813459726] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:44:18,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:44:18,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 13:44:18,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150510295] [2023-12-21 13:44:18,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:44:18,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 13:44:18,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:44:18,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 13:44:18,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-12-21 13:44:18,692 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) [2023-12-21 13:44:18,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:44:18,912 INFO L93 Difference]: Finished difference Result 1259 states and 1800 transitions. [2023-12-21 13:44:18,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-21 13:44:18,912 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 [2023-12-21 13:44:18,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:44:18,914 INFO L225 Difference]: With dead ends: 1259 [2023-12-21 13:44:18,915 INFO L226 Difference]: Without dead ends: 855 [2023-12-21 13:44:18,915 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 [2023-12-21 13:44:18,916 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 [2023-12-21 13:44:18,916 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] [2023-12-21 13:44:18,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2023-12-21 13:44:18,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 466. [2023-12-21 13:44:18,924 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) [2023-12-21 13:44:18,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 654 transitions. [2023-12-21 13:44:18,925 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 654 transitions. Word has length 54 [2023-12-21 13:44:18,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:44:18,925 INFO L495 AbstractCegarLoop]: Abstraction has 466 states and 654 transitions. [2023-12-21 13:44:18,925 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) [2023-12-21 13:44:18,925 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 654 transitions. [2023-12-21 13:44:18,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-21 13:44:18,926 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:44:18,926 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] [2023-12-21 13:44:18,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-21 13:44:18,926 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:44:18,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:44:18,926 INFO L85 PathProgramCache]: Analyzing trace with hash 568588166, now seen corresponding path program 1 times [2023-12-21 13:44:18,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:44:18,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215738938] [2023-12-21 13:44:18,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:44:18,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:44:18,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:44:19,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:44:19,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:44:19,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215738938] [2023-12-21 13:44:19,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215738938] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:44:19,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:44:19,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-21 13:44:19,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574579597] [2023-12-21 13:44:19,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:44:19,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-21 13:44:19,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:44:19,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-21 13:44:19,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2023-12-21 13:44:19,316 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) [2023-12-21 13:44:19,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:44:19,980 INFO L93 Difference]: Finished difference Result 2519 states and 3643 transitions. [2023-12-21 13:44:19,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-21 13:44:19,980 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 [2023-12-21 13:44:19,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:44:19,986 INFO L225 Difference]: With dead ends: 2519 [2023-12-21 13:44:19,986 INFO L226 Difference]: Without dead ends: 2327 [2023-12-21 13:44:19,986 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=173, Invalid=427, Unknown=0, NotChecked=0, Total=600 [2023-12-21 13:44:19,987 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 1212 mSDsluCounter, 710 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 [2023-12-21 13:44:19,987 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] [2023-12-21 13:44:19,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2327 states. [2023-12-21 13:44:20,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2327 to 445. [2023-12-21 13:44:20,003 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) [2023-12-21 13:44:20,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 625 transitions. [2023-12-21 13:44:20,004 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 625 transitions. Word has length 55 [2023-12-21 13:44:20,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:44:20,004 INFO L495 AbstractCegarLoop]: Abstraction has 445 states and 625 transitions. [2023-12-21 13:44:20,004 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) [2023-12-21 13:44:20,005 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 625 transitions. [2023-12-21 13:44:20,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-21 13:44:20,005 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:44:20,005 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] [2023-12-21 13:44:20,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-12-21 13:44:20,005 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:44:20,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:44:20,006 INFO L85 PathProgramCache]: Analyzing trace with hash -782372312, now seen corresponding path program 1 times [2023-12-21 13:44:20,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:44:20,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833446292] [2023-12-21 13:44:20,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:44:20,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:44:20,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:44:20,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:44:20,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:44:20,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833446292] [2023-12-21 13:44:20,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833446292] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:44:20,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:44:20,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2023-12-21 13:44:20,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164493491] [2023-12-21 13:44:20,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:44:20,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-21 13:44:20,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:44:20,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-21 13:44:20,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2023-12-21 13:44:20,460 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) [2023-12-21 13:44:21,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:44:21,597 INFO L93 Difference]: Finished difference Result 2897 states and 4186 transitions. [2023-12-21 13:44:21,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-21 13:44:21,597 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 [2023-12-21 13:44:21,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:44:21,603 INFO L225 Difference]: With dead ends: 2897 [2023-12-21 13:44:21,603 INFO L226 Difference]: Without dead ends: 2508 [2023-12-21 13:44:21,606 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=212, Invalid=978, Unknown=0, NotChecked=0, Total=1190 [2023-12-21 13:44:21,606 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, 0.7s IncrementalHoareTripleChecker+Time [2023-12-21 13:44:21,607 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [824 Valid, 3225 Invalid, 1702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1700 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-21 13:44:21,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2508 states. [2023-12-21 13:44:21,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2508 to 460. [2023-12-21 13:44:21,623 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) [2023-12-21 13:44:21,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 642 transitions. [2023-12-21 13:44:21,624 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 642 transitions. Word has length 55 [2023-12-21 13:44:21,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:44:21,624 INFO L495 AbstractCegarLoop]: Abstraction has 460 states and 642 transitions. [2023-12-21 13:44:21,625 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) [2023-12-21 13:44:21,625 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 642 transitions. [2023-12-21 13:44:21,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-12-21 13:44:21,626 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:44:21,626 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] [2023-12-21 13:44:21,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-12-21 13:44:21,627 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:44:21,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:44:21,627 INFO L85 PathProgramCache]: Analyzing trace with hash -749357809, now seen corresponding path program 1 times [2023-12-21 13:44:21,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:44:21,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676703726] [2023-12-21 13:44:21,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:44:21,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:44:21,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:44:22,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:44:22,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:44:22,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676703726] [2023-12-21 13:44:22,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676703726] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:44:22,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:44:22,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2023-12-21 13:44:22,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449393773] [2023-12-21 13:44:22,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:44:22,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-21 13:44:22,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:44:22,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-21 13:44:22,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2023-12-21 13:44:22,364 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) [2023-12-21 13:44:24,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:44:24,280 INFO L93 Difference]: Finished difference Result 2423 states and 3498 transitions. [2023-12-21 13:44:24,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-12-21 13:44:24,280 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 [2023-12-21 13:44:24,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:44:24,285 INFO L225 Difference]: With dead ends: 2423 [2023-12-21 13:44:24,286 INFO L226 Difference]: Without dead ends: 2246 [2023-12-21 13:44:24,287 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=262, Invalid=1070, Unknown=0, NotChecked=0, Total=1332 [2023-12-21 13:44:24,287 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 [2023-12-21 13:44:24,287 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] [2023-12-21 13:44:24,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2246 states. [2023-12-21 13:44:24,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2246 to 448. [2023-12-21 13:44:24,301 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) [2023-12-21 13:44:24,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 625 transitions. [2023-12-21 13:44:24,302 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 625 transitions. Word has length 56 [2023-12-21 13:44:24,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:44:24,302 INFO L495 AbstractCegarLoop]: Abstraction has 448 states and 625 transitions. [2023-12-21 13:44:24,302 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) [2023-12-21 13:44:24,302 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 625 transitions. [2023-12-21 13:44:24,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-12-21 13:44:24,302 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:44:24,303 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] [2023-12-21 13:44:24,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-21 13:44:24,303 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:44:24,303 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:44:24,303 INFO L85 PathProgramCache]: Analyzing trace with hash 1588815950, now seen corresponding path program 1 times [2023-12-21 13:44:24,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:44:24,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591596126] [2023-12-21 13:44:24,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:44:24,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:44:24,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:44:24,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:44:24,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:44:24,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591596126] [2023-12-21 13:44:24,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591596126] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:44:24,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:44:24,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-21 13:44:24,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373378694] [2023-12-21 13:44:24,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:44:24,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-21 13:44:24,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:44:24,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-21 13:44:24,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2023-12-21 13:44:24,654 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) [2023-12-21 13:44:25,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:44:25,428 INFO L93 Difference]: Finished difference Result 1722 states and 2486 transitions. [2023-12-21 13:44:25,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-21 13:44:25,430 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 [2023-12-21 13:44:25,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:44:25,433 INFO L225 Difference]: With dead ends: 1722 [2023-12-21 13:44:25,433 INFO L226 Difference]: Without dead ends: 1551 [2023-12-21 13:44:25,434 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 [2023-12-21 13:44:25,434 INFO L413 NwaCegarLoop]: 271 mSDtfsCounter, 813 mSDsluCounter, 907 mSDsCounter, 0 mSdLazyCounter, 334 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 [2023-12-21 13:44:25,434 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] [2023-12-21 13:44:25,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1551 states. [2023-12-21 13:44:25,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1551 to 441. [2023-12-21 13:44:25,445 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) [2023-12-21 13:44:25,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 616 transitions. [2023-12-21 13:44:25,446 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 616 transitions. Word has length 56 [2023-12-21 13:44:25,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:44:25,447 INFO L495 AbstractCegarLoop]: Abstraction has 441 states and 616 transitions. [2023-12-21 13:44:25,447 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) [2023-12-21 13:44:25,447 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 616 transitions. [2023-12-21 13:44:25,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-12-21 13:44:25,447 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:44:25,447 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] [2023-12-21 13:44:25,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-21 13:44:25,447 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:44:25,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:44:25,448 INFO L85 PathProgramCache]: Analyzing trace with hash -1032044749, now seen corresponding path program 1 times [2023-12-21 13:44:25,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:44:25,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578641995] [2023-12-21 13:44:25,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:44:25,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:44:25,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:44:25,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:44:25,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:44:25,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578641995] [2023-12-21 13:44:25,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578641995] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:44:25,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:44:25,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-21 13:44:25,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008644429] [2023-12-21 13:44:25,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:44:25,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-21 13:44:25,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:44:25,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-21 13:44:25,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2023-12-21 13:44:25,794 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) [2023-12-21 13:44:26,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:44:26,568 INFO L93 Difference]: Finished difference Result 1719 states and 2483 transitions. [2023-12-21 13:44:26,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-21 13:44:26,569 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 [2023-12-21 13:44:26,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:44:26,572 INFO L225 Difference]: With dead ends: 1719 [2023-12-21 13:44:26,572 INFO L226 Difference]: Without dead ends: 1543 [2023-12-21 13:44:26,573 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 [2023-12-21 13:44:26,573 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 [2023-12-21 13:44:26,573 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] [2023-12-21 13:44:26,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1543 states. [2023-12-21 13:44:26,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1543 to 427. [2023-12-21 13:44:26,583 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) [2023-12-21 13:44:26,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 601 transitions. [2023-12-21 13:44:26,584 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 601 transitions. Word has length 56 [2023-12-21 13:44:26,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:44:26,584 INFO L495 AbstractCegarLoop]: Abstraction has 427 states and 601 transitions. [2023-12-21 13:44:26,584 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) [2023-12-21 13:44:26,585 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 601 transitions. [2023-12-21 13:44:26,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-12-21 13:44:26,585 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:44:26,585 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] [2023-12-21 13:44:26,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-21 13:44:26,585 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:44:26,585 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:44:26,586 INFO L85 PathProgramCache]: Analyzing trace with hash -241009193, now seen corresponding path program 1 times [2023-12-21 13:44:26,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:44:26,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941245881] [2023-12-21 13:44:26,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:44:26,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:44:26,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:44:26,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:44:26,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:44:26,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941245881] [2023-12-21 13:44:26,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941245881] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:44:26,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:44:26,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:44:26,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148063712] [2023-12-21 13:44:26,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:44:26,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:44:26,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:44:26,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:44:26,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:44:26,616 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) [2023-12-21 13:44:26,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:44:26,629 INFO L93 Difference]: Finished difference Result 1093 states and 1568 transitions. [2023-12-21 13:44:26,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:44:26,629 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 [2023-12-21 13:44:26,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:44:26,631 INFO L225 Difference]: With dead ends: 1093 [2023-12-21 13:44:26,631 INFO L226 Difference]: Without dead ends: 731 [2023-12-21 13:44:26,631 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:44:26,632 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 [2023-12-21 13:44:26,632 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] [2023-12-21 13:44:26,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 731 states. [2023-12-21 13:44:26,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 731 to 729. [2023-12-21 13:44:26,643 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) [2023-12-21 13:44:26,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 729 states to 729 states and 1017 transitions. [2023-12-21 13:44:26,644 INFO L78 Accepts]: Start accepts. Automaton has 729 states and 1017 transitions. Word has length 76 [2023-12-21 13:44:26,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:44:26,645 INFO L495 AbstractCegarLoop]: Abstraction has 729 states and 1017 transitions. [2023-12-21 13:44:26,645 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) [2023-12-21 13:44:26,645 INFO L276 IsEmpty]: Start isEmpty. Operand 729 states and 1017 transitions. [2023-12-21 13:44:26,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-21 13:44:26,645 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:44:26,645 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] [2023-12-21 13:44:26,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-21 13:44:26,646 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:44:26,646 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:44:26,646 INFO L85 PathProgramCache]: Analyzing trace with hash 1600462639, now seen corresponding path program 1 times [2023-12-21 13:44:26,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:44:26,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998265643] [2023-12-21 13:44:26,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:44:26,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:44:26,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:44:26,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:44:26,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:44:26,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998265643] [2023-12-21 13:44:26,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998265643] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:44:26,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:44:26,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:44:26,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794889176] [2023-12-21 13:44:26,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:44:26,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:44:26,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:44:26,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:44:26,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:44:26,733 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) [2023-12-21 13:44:26,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:44:26,746 INFO L93 Difference]: Finished difference Result 1814 states and 2552 transitions. [2023-12-21 13:44:26,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:44:26,746 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 [2023-12-21 13:44:26,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:44:26,749 INFO L225 Difference]: With dead ends: 1814 [2023-12-21 13:44:26,749 INFO L226 Difference]: Without dead ends: 1150 [2023-12-21 13:44:26,749 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:44:26,750 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 [2023-12-21 13:44:26,750 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] [2023-12-21 13:44:26,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1150 states. [2023-12-21 13:44:26,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1150 to 1076. [2023-12-21 13:44:26,761 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) [2023-12-21 13:44:26,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1076 states to 1076 states and 1495 transitions. [2023-12-21 13:44:26,763 INFO L78 Accepts]: Start accepts. Automaton has 1076 states and 1495 transitions. Word has length 77 [2023-12-21 13:44:26,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:44:26,763 INFO L495 AbstractCegarLoop]: Abstraction has 1076 states and 1495 transitions. [2023-12-21 13:44:26,763 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) [2023-12-21 13:44:26,763 INFO L276 IsEmpty]: Start isEmpty. Operand 1076 states and 1495 transitions. [2023-12-21 13:44:26,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-21 13:44:26,764 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:44:26,764 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 13:44:26,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-21 13:44:26,764 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:44:26,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:44:26,764 INFO L85 PathProgramCache]: Analyzing trace with hash 398753711, now seen corresponding path program 1 times [2023-12-21 13:44:26,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:44:26,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609878893] [2023-12-21 13:44:26,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:44:26,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:44:26,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:44:26,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:44:26,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:44:26,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609878893] [2023-12-21 13:44:26,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609878893] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:44:26,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:44:26,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:44:26,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215223085] [2023-12-21 13:44:26,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:44:26,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:44:26,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:44:26,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:44:26,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:44:26,823 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) [2023-12-21 13:44:26,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:44:26,837 INFO L93 Difference]: Finished difference Result 2990 states and 4158 transitions. [2023-12-21 13:44:26,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:44:26,838 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 [2023-12-21 13:44:26,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:44:26,842 INFO L225 Difference]: With dead ends: 2990 [2023-12-21 13:44:26,842 INFO L226 Difference]: Without dead ends: 1979 [2023-12-21 13:44:26,843 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:44:26,844 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 [2023-12-21 13:44:26,844 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] [2023-12-21 13:44:26,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1979 states. [2023-12-21 13:44:26,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1979 to 1869. [2023-12-21 13:44:26,865 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) [2023-12-21 13:44:26,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1869 states to 1869 states and 2569 transitions. [2023-12-21 13:44:26,868 INFO L78 Accepts]: Start accepts. Automaton has 1869 states and 2569 transitions. Word has length 78 [2023-12-21 13:44:26,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:44:26,868 INFO L495 AbstractCegarLoop]: Abstraction has 1869 states and 2569 transitions. [2023-12-21 13:44:26,869 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) [2023-12-21 13:44:26,869 INFO L276 IsEmpty]: Start isEmpty. Operand 1869 states and 2569 transitions. [2023-12-21 13:44:26,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-12-21 13:44:26,869 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:44:26,869 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] [2023-12-21 13:44:26,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-21 13:44:26,869 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:44:26,870 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:44:26,870 INFO L85 PathProgramCache]: Analyzing trace with hash -718990442, now seen corresponding path program 1 times [2023-12-21 13:44:26,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:44:26,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282241768] [2023-12-21 13:44:26,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:44:26,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:44:26,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:44:26,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:44:26,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:44:26,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282241768] [2023-12-21 13:44:26,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282241768] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:44:26,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:44:26,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:44:26,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594764455] [2023-12-21 13:44:26,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:44:26,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:44:26,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:44:26,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:44:26,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:44:26,927 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) [2023-12-21 13:44:26,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:44:26,943 INFO L93 Difference]: Finished difference Result 5261 states and 7191 transitions. [2023-12-21 13:44:26,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:44:26,943 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 [2023-12-21 13:44:26,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:44:26,951 INFO L225 Difference]: With dead ends: 5261 [2023-12-21 13:44:26,951 INFO L226 Difference]: Without dead ends: 3457 [2023-12-21 13:44:26,953 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:44:26,953 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 [2023-12-21 13:44:26,954 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] [2023-12-21 13:44:26,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3457 states. [2023-12-21 13:44:26,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3457 to 3239. [2023-12-21 13:44:26,988 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) [2023-12-21 13:44:26,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3239 states to 3239 states and 4366 transitions. [2023-12-21 13:44:26,992 INFO L78 Accepts]: Start accepts. Automaton has 3239 states and 4366 transitions. Word has length 79 [2023-12-21 13:44:26,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:44:26,992 INFO L495 AbstractCegarLoop]: Abstraction has 3239 states and 4366 transitions. [2023-12-21 13:44:26,993 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) [2023-12-21 13:44:26,993 INFO L276 IsEmpty]: Start isEmpty. Operand 3239 states and 4366 transitions. [2023-12-21 13:44:26,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-21 13:44:26,993 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:44:26,993 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] [2023-12-21 13:44:26,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-21 13:44:26,993 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:44:26,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:44:26,994 INFO L85 PathProgramCache]: Analyzing trace with hash -660634110, now seen corresponding path program 1 times [2023-12-21 13:44:26,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:44:26,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747726742] [2023-12-21 13:44:26,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:44:26,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:44:27,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:44:27,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:44:27,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:44:27,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747726742] [2023-12-21 13:44:27,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747726742] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:44:27,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:44:27,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 13:44:27,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354001577] [2023-12-21 13:44:27,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:44:27,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 13:44:27,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:44:27,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 13:44:27,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-21 13:44:27,099 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) [2023-12-21 13:44:27,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:44:27,143 INFO L93 Difference]: Finished difference Result 5051 states and 6769 transitions. [2023-12-21 13:44:27,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 13:44:27,144 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 [2023-12-21 13:44:27,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:44:27,166 INFO L225 Difference]: With dead ends: 5051 [2023-12-21 13:44:27,166 INFO L226 Difference]: Without dead ends: 5049 [2023-12-21 13:44:27,168 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 [2023-12-21 13:44:27,168 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 [2023-12-21 13:44:27,168 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] [2023-12-21 13:44:27,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5049 states. [2023-12-21 13:44:27,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5049 to 3335. [2023-12-21 13:44:27,216 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) [2023-12-21 13:44:27,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3335 states to 3335 states and 4422 transitions. [2023-12-21 13:44:27,222 INFO L78 Accepts]: Start accepts. Automaton has 3335 states and 4422 transitions. Word has length 80 [2023-12-21 13:44:27,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:44:27,222 INFO L495 AbstractCegarLoop]: Abstraction has 3335 states and 4422 transitions. [2023-12-21 13:44:27,222 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) [2023-12-21 13:44:27,222 INFO L276 IsEmpty]: Start isEmpty. Operand 3335 states and 4422 transitions. [2023-12-21 13:44:27,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-12-21 13:44:27,223 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:44:27,223 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] [2023-12-21 13:44:27,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-21 13:44:27,223 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:44:27,223 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:44:27,223 INFO L85 PathProgramCache]: Analyzing trace with hash -755554106, now seen corresponding path program 1 times [2023-12-21 13:44:27,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:44:27,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417067091] [2023-12-21 13:44:27,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:44:27,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:44:27,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:44:27,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:44:27,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:44:27,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417067091] [2023-12-21 13:44:27,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417067091] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:44:27,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:44:27,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:44:27,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100683096] [2023-12-21 13:44:27,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:44:27,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:44:27,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:44:27,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:44:27,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:44:27,252 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) [2023-12-21 13:44:27,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:44:27,274 INFO L93 Difference]: Finished difference Result 6731 states and 8944 transitions. [2023-12-21 13:44:27,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:44:27,275 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 [2023-12-21 13:44:27,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:44:27,280 INFO L225 Difference]: With dead ends: 6731 [2023-12-21 13:44:27,280 INFO L226 Difference]: Without dead ends: 3461 [2023-12-21 13:44:27,282 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:44:27,283 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 [2023-12-21 13:44:27,284 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] [2023-12-21 13:44:27,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3461 states. [2023-12-21 13:44:27,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3461 to 3459. [2023-12-21 13:44:27,312 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) [2023-12-21 13:44:27,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3459 states to 3459 states and 4514 transitions. [2023-12-21 13:44:27,321 INFO L78 Accepts]: Start accepts. Automaton has 3459 states and 4514 transitions. Word has length 80 [2023-12-21 13:44:27,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:44:27,321 INFO L495 AbstractCegarLoop]: Abstraction has 3459 states and 4514 transitions. [2023-12-21 13:44:27,322 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) [2023-12-21 13:44:27,322 INFO L276 IsEmpty]: Start isEmpty. Operand 3459 states and 4514 transitions. [2023-12-21 13:44:27,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-21 13:44:27,322 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:44:27,323 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] [2023-12-21 13:44:27,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-21 13:44:27,323 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:44:27,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:44:27,323 INFO L85 PathProgramCache]: Analyzing trace with hash -913097993, now seen corresponding path program 1 times [2023-12-21 13:44:27,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:44:27,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831240301] [2023-12-21 13:44:27,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:44:27,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:44:27,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:44:27,515 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:44:27,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:44:27,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831240301] [2023-12-21 13:44:27,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831240301] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:44:27,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1530627499] [2023-12-21 13:44:27,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:44:27,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:44:27,516 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:44:27,518 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 13:44:27,521 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-21 13:44:27,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:44:27,653 INFO L262 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-21 13:44:27,658 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:44:28,263 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:44:28,263 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:44:28,888 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:44:28,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1530627499] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:44:28,888 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:44:28,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 12, 12] total 30 [2023-12-21 13:44:28,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587685917] [2023-12-21 13:44:28,889 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:44:28,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-12-21 13:44:28,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:44:28,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-12-21 13:44:28,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=804, Unknown=0, NotChecked=0, Total=930 [2023-12-21 13:44:28,892 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) [2023-12-21 13:44:37,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:44:37,668 INFO L93 Difference]: Finished difference Result 61316 states and 78205 transitions. [2023-12-21 13:44:37,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 197 states. [2023-12-21 13:44:37,669 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 [2023-12-21 13:44:37,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:44:37,761 INFO L225 Difference]: With dead ends: 61316 [2023-12-21 13:44:37,761 INFO L226 Difference]: Without dead ends: 57922 [2023-12-21 13:44:37,790 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 [2023-12-21 13:44:37,791 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 [2023-12-21 13:44:37,791 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] [2023-12-21 13:44:37,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57922 states. [2023-12-21 13:44:38,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57922 to 8479. [2023-12-21 13:44:38,299 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) [2023-12-21 13:44:38,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8479 states to 8479 states and 11052 transitions. [2023-12-21 13:44:38,313 INFO L78 Accepts]: Start accepts. Automaton has 8479 states and 11052 transitions. Word has length 101 [2023-12-21 13:44:38,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:44:38,313 INFO L495 AbstractCegarLoop]: Abstraction has 8479 states and 11052 transitions. [2023-12-21 13:44:38,314 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) [2023-12-21 13:44:38,314 INFO L276 IsEmpty]: Start isEmpty. Operand 8479 states and 11052 transitions. [2023-12-21 13:44:38,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-21 13:44:38,316 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:44:38,316 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] [2023-12-21 13:44:38,326 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-21 13:44:38,520 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 [2023-12-21 13:44:38,523 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:44:38,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:44:38,524 INFO L85 PathProgramCache]: Analyzing trace with hash -1298747018, now seen corresponding path program 1 times [2023-12-21 13:44:38,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:44:38,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143809335] [2023-12-21 13:44:38,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:44:38,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:44:38,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:44:38,895 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:44:38,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:44:38,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143809335] [2023-12-21 13:44:38,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143809335] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:44:38,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1638301470] [2023-12-21 13:44:38,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:44:38,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:44:38,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:44:38,896 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) [2023-12-21 13:44:38,899 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-21 13:44:38,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:44:38,998 INFO L262 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-21 13:44:39,002 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:44:39,462 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:44:39,462 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:44:40,080 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:44:40,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1638301470] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:44:40,080 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:44:40,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 12] total 31 [2023-12-21 13:44:40,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435259099] [2023-12-21 13:44:40,081 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:44:40,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-21 13:44:40,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:44:40,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-21 13:44:40,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=877, Unknown=0, NotChecked=0, Total=992 [2023-12-21 13:44:40,082 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) [2023-12-21 13:45:17,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:45:17,009 INFO L93 Difference]: Finished difference Result 252555 states and 319714 transitions. [2023-12-21 13:45:17,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 594 states. [2023-12-21 13:45:17,010 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 [2023-12-21 13:45:17,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:45:17,385 INFO L225 Difference]: With dead ends: 252555 [2023-12-21 13:45:17,385 INFO L226 Difference]: Without dead ends: 244153 [2023-12-21 13:45:17,517 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 803 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 622 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175421 ImplicationChecksByTransitivity, 31.9s TimeCoverageRelationStatistics Valid=40993, Invalid=347759, Unknown=0, NotChecked=0, Total=388752 [2023-12-21 13:45:17,517 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, 3.6s IncrementalHoareTripleChecker+Time [2023-12-21 13:45:17,518 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10381 Valid, 6639 Invalid, 7315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 7172 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-12-21 13:45:17,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244153 states. [2023-12-21 13:45:18,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244153 to 44486. [2023-12-21 13:45:18,739 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) [2023-12-21 13:45:18,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44486 states to 44486 states and 57598 transitions. [2023-12-21 13:45:18,787 INFO L78 Accepts]: Start accepts. Automaton has 44486 states and 57598 transitions. Word has length 101 [2023-12-21 13:45:18,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:45:18,788 INFO L495 AbstractCegarLoop]: Abstraction has 44486 states and 57598 transitions. [2023-12-21 13:45:18,788 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) [2023-12-21 13:45:18,788 INFO L276 IsEmpty]: Start isEmpty. Operand 44486 states and 57598 transitions. [2023-12-21 13:45:18,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-12-21 13:45:18,797 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:45:18,797 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] [2023-12-21 13:45:18,802 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-21 13:45:19,002 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 [2023-12-21 13:45:19,003 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:45:19,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:45:19,004 INFO L85 PathProgramCache]: Analyzing trace with hash 72343413, now seen corresponding path program 1 times [2023-12-21 13:45:19,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:45:19,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179782211] [2023-12-21 13:45:19,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:45:19,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:45:19,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:45:19,314 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:45:19,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:45:19,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179782211] [2023-12-21 13:45:19,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179782211] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:45:19,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [622723021] [2023-12-21 13:45:19,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:45:19,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:45:19,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:45:19,315 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) [2023-12-21 13:45:19,322 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-21 13:45:19,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:45:19,435 INFO L262 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-21 13:45:19,444 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:45:19,785 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:45:19,786 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:45:20,487 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:45:20,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [622723021] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:45:20,487 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:45:20,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 11] total 28 [2023-12-21 13:45:20,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581303311] [2023-12-21 13:45:20,488 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:45:20,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-21 13:45:20,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:45:20,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-21 13:45:20,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=710, Unknown=0, NotChecked=0, Total=812 [2023-12-21 13:45:20,489 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) [2023-12-21 13:45:39,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:45:39,085 INFO L93 Difference]: Finished difference Result 234273 states and 298304 transitions. [2023-12-21 13:45:39,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 390 states. [2023-12-21 13:45:39,086 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 [2023-12-21 13:45:39,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:45:39,500 INFO L225 Difference]: With dead ends: 234273 [2023-12-21 13:45:39,500 INFO L226 Difference]: Without dead ends: 216616 [2023-12-21 13:45:39,545 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 598 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 415 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73668 ImplicationChecksByTransitivity, 14.3s TimeCoverageRelationStatistics Valid=18801, Invalid=154671, Unknown=0, NotChecked=0, Total=173472 [2023-12-21 13:45:39,546 INFO L413 NwaCegarLoop]: 426 mSDtfsCounter, 4685 mSDsluCounter, 7291 mSDsCounter, 0 mSdLazyCounter, 7717 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4685 SdHoareTripleChecker+Valid, 7717 SdHoareTripleChecker+Invalid, 7753 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 7717 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-12-21 13:45:39,546 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4685 Valid, 7717 Invalid, 7753 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [36 Valid, 7717 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-12-21 13:45:39,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216616 states. [2023-12-21 13:45:40,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216616 to 54140. [2023-12-21 13:45:40,720 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) [2023-12-21 13:45:40,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54140 states to 54140 states and 70091 transitions. [2023-12-21 13:45:40,786 INFO L78 Accepts]: Start accepts. Automaton has 54140 states and 70091 transitions. Word has length 101 [2023-12-21 13:45:40,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:45:40,786 INFO L495 AbstractCegarLoop]: Abstraction has 54140 states and 70091 transitions. [2023-12-21 13:45:40,786 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) [2023-12-21 13:45:40,786 INFO L276 IsEmpty]: Start isEmpty. Operand 54140 states and 70091 transitions. [2023-12-21 13:45:40,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-21 13:45:40,792 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:45:40,792 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] [2023-12-21 13:45:40,796 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-21 13:45:40,996 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 [2023-12-21 13:45:40,997 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:45:40,997 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:45:40,997 INFO L85 PathProgramCache]: Analyzing trace with hash 969778631, now seen corresponding path program 1 times [2023-12-21 13:45:40,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:45:40,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580701043] [2023-12-21 13:45:40,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:45:40,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:45:41,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:45:41,379 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:45:41,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:45:41,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580701043] [2023-12-21 13:45:41,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580701043] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:45:41,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1569781393] [2023-12-21 13:45:41,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:45:41,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:45:41,379 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:45:41,380 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) [2023-12-21 13:45:41,382 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-21 13:45:41,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:45:41,564 INFO L262 TraceCheckSpWp]: Trace formula consists of 445 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-21 13:45:41,568 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:45:42,049 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:45:42,049 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:45:42,572 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:45:42,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1569781393] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:45:42,572 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:45:42,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 12] total 32 [2023-12-21 13:45:42,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525729070] [2023-12-21 13:45:42,572 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:45:42,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-21 13:45:42,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:45:42,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-21 13:45:42,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=902, Unknown=0, NotChecked=0, Total=992 [2023-12-21 13:45:42,574 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) [2023-12-21 13:46:48,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:46:48,250 INFO L93 Difference]: Finished difference Result 619276 states and 782734 transitions. [2023-12-21 13:46:48,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 872 states. [2023-12-21 13:46:48,250 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 [2023-12-21 13:46:48,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:46:49,217 INFO L225 Difference]: With dead ends: 619276 [2023-12-21 13:46:49,217 INFO L226 Difference]: Without dead ends: 579295 [2023-12-21 13:46:49,342 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1083 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 900 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 390680 ImplicationChecksByTransitivity, 58.4s TimeCoverageRelationStatistics Valid=77291, Invalid=735411, Unknown=0, NotChecked=0, Total=812702 [2023-12-21 13:46:49,344 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, 4.4s IncrementalHoareTripleChecker+Time [2023-12-21 13:46:49,345 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21424 Valid, 6978 Invalid, 8224 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [408 Valid, 7816 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2023-12-21 13:46:49,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579295 states. [2023-12-21 13:46:52,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579295 to 103452. [2023-12-21 13:46:52,530 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) [2023-12-21 13:46:52,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103452 states to 103452 states and 134854 transitions. [2023-12-21 13:46:52,678 INFO L78 Accepts]: Start accepts. Automaton has 103452 states and 134854 transitions. Word has length 102 [2023-12-21 13:46:52,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:46:52,678 INFO L495 AbstractCegarLoop]: Abstraction has 103452 states and 134854 transitions. [2023-12-21 13:46:52,678 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) [2023-12-21 13:46:52,678 INFO L276 IsEmpty]: Start isEmpty. Operand 103452 states and 134854 transitions. [2023-12-21 13:46:52,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-12-21 13:46:52,688 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:46:52,688 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] [2023-12-21 13:46:52,696 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-21 13:46:52,895 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 [2023-12-21 13:46:52,896 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:46:52,896 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:46:52,896 INFO L85 PathProgramCache]: Analyzing trace with hash 503506972, now seen corresponding path program 1 times [2023-12-21 13:46:52,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:46:52,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638516168] [2023-12-21 13:46:52,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:46:52,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:46:52,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:46:52,933 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-21 13:46:52,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:46:52,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638516168] [2023-12-21 13:46:52,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638516168] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:46:52,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:46:52,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:46:52,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759338748] [2023-12-21 13:46:52,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:46:52,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:46:52,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:46:52,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:46:52,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:46:52,934 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) [2023-12-21 13:46:53,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:46:53,605 INFO L93 Difference]: Finished difference Result 175769 states and 229415 transitions. [2023-12-21 13:46:53,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:46:53,609 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 [2023-12-21 13:46:53,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:46:53,684 INFO L225 Difference]: With dead ends: 175769 [2023-12-21 13:46:53,684 INFO L226 Difference]: Without dead ends: 72424 [2023-12-21 13:46:53,722 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:46:53,722 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 81 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 13:46:53,722 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 134 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 13:46:53,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72424 states. [2023-12-21 13:46:54,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72424 to 72424. [2023-12-21 13:46:54,433 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) [2023-12-21 13:46:54,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72424 states to 72424 states and 92658 transitions. [2023-12-21 13:46:54,512 INFO L78 Accepts]: Start accepts. Automaton has 72424 states and 92658 transitions. Word has length 103 [2023-12-21 13:46:54,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:46:54,512 INFO L495 AbstractCegarLoop]: Abstraction has 72424 states and 92658 transitions. [2023-12-21 13:46:54,512 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) [2023-12-21 13:46:54,512 INFO L276 IsEmpty]: Start isEmpty. Operand 72424 states and 92658 transitions. [2023-12-21 13:46:54,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-12-21 13:46:54,518 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:46:54,518 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] [2023-12-21 13:46:54,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-12-21 13:46:54,518 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:46:54,519 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:46:54,519 INFO L85 PathProgramCache]: Analyzing trace with hash -218879738, now seen corresponding path program 1 times [2023-12-21 13:46:54,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:46:54,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034262794] [2023-12-21 13:46:54,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:46:54,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:46:54,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:46:55,407 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:46:55,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:46:55,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034262794] [2023-12-21 13:46:55,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034262794] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:46:55,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [377456991] [2023-12-21 13:46:55,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:46:55,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:46:55,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:46:55,408 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) [2023-12-21 13:46:55,409 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-21 13:46:55,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:46:55,571 INFO L262 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-21 13:46:55,572 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:46:56,614 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:46:56,614 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:46:58,064 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:46:58,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [377456991] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:46:58,065 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:46:58,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 48 [2023-12-21 13:46:58,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897122395] [2023-12-21 13:46:58,065 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:46:58,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-12-21 13:46:58,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:46:58,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-12-21 13:46:58,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=2099, Unknown=0, NotChecked=0, Total=2256 [2023-12-21 13:46:58,066 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) [2023-12-21 13:47:37,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:47:37,288 INFO L93 Difference]: Finished difference Result 378766 states and 478156 transitions. [2023-12-21 13:47:37,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 214 states. [2023-12-21 13:47:37,289 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 [2023-12-21 13:47:37,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:47:37,680 INFO L225 Difference]: With dead ends: 378766 [2023-12-21 13:47:37,680 INFO L226 Difference]: Without dead ends: 327602 [2023-12-21 13:47:37,773 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 434 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 258 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22479 ImplicationChecksByTransitivity, 32.3s TimeCoverageRelationStatistics Valid=8357, Invalid=58983, Unknown=0, NotChecked=0, Total=67340 [2023-12-21 13:47:37,774 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, 6.7s IncrementalHoareTripleChecker+Time [2023-12-21 13:47:37,774 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6218 Valid, 21596 Invalid, 10824 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [8 Valid, 10816 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2023-12-21 13:47:37,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327602 states. [2023-12-21 13:47:40,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327602 to 107403. [2023-12-21 13:47:40,171 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) [2023-12-21 13:47:40,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107403 states to 107403 states and 137776 transitions. [2023-12-21 13:47:40,300 INFO L78 Accepts]: Start accepts. Automaton has 107403 states and 137776 transitions. Word has length 103 [2023-12-21 13:47:40,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:47:40,301 INFO L495 AbstractCegarLoop]: Abstraction has 107403 states and 137776 transitions. [2023-12-21 13:47:40,301 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) [2023-12-21 13:47:40,301 INFO L276 IsEmpty]: Start isEmpty. Operand 107403 states and 137776 transitions. [2023-12-21 13:47:40,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-12-21 13:47:40,468 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:47:40,468 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] [2023-12-21 13:47:40,489 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-21 13:47:40,668 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 [2023-12-21 13:47:40,669 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:47:40,669 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:47:40,669 INFO L85 PathProgramCache]: Analyzing trace with hash 29065800, now seen corresponding path program 1 times [2023-12-21 13:47:40,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:47:40,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045224878] [2023-12-21 13:47:40,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:47:40,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:47:40,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:47:40,711 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:47:40,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:47:40,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045224878] [2023-12-21 13:47:40,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045224878] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:47:40,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:47:40,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:47:40,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190737753] [2023-12-21 13:47:40,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:47:40,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:47:40,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:47:40,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:47:40,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:47:40,712 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) [2023-12-21 13:47:41,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:47:41,230 INFO L93 Difference]: Finished difference Result 214695 states and 275434 transitions. [2023-12-21 13:47:41,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:47:41,230 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 [2023-12-21 13:47:41,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:47:41,348 INFO L225 Difference]: With dead ends: 214695 [2023-12-21 13:47:41,348 INFO L226 Difference]: Without dead ends: 107405 [2023-12-21 13:47:41,392 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:47:41,393 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 [2023-12-21 13:47:41,393 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] [2023-12-21 13:47:41,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107405 states. [2023-12-21 13:47:42,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107405 to 102823. [2023-12-21 13:47:42,385 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) [2023-12-21 13:47:42,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102823 states to 102823 states and 129551 transitions. [2023-12-21 13:47:42,509 INFO L78 Accepts]: Start accepts. Automaton has 102823 states and 129551 transitions. Word has length 103 [2023-12-21 13:47:42,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:47:42,509 INFO L495 AbstractCegarLoop]: Abstraction has 102823 states and 129551 transitions. [2023-12-21 13:47:42,509 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) [2023-12-21 13:47:42,509 INFO L276 IsEmpty]: Start isEmpty. Operand 102823 states and 129551 transitions. [2023-12-21 13:47:42,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-12-21 13:47:42,514 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:47:42,514 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] [2023-12-21 13:47:42,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-12-21 13:47:42,514 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:47:42,514 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:47:42,514 INFO L85 PathProgramCache]: Analyzing trace with hash -1939266616, now seen corresponding path program 1 times [2023-12-21 13:47:42,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:47:42,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955710222] [2023-12-21 13:47:42,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:47:42,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:47:42,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:47:43,379 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:47:43,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:47:43,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955710222] [2023-12-21 13:47:43,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955710222] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:47:43,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1818697672] [2023-12-21 13:47:43,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:47:43,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:47:43,380 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:47:43,381 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) [2023-12-21 13:47:43,382 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-21 13:47:43,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:47:43,496 INFO L262 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 37 conjunts are in the unsatisfiable core [2023-12-21 13:47:43,497 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:47:45,725 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:47:45,725 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:47:47,594 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:47:47,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1818697672] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:47:47,594 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:47:47,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 18, 19] total 58 [2023-12-21 13:47:47,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045224746] [2023-12-21 13:47:47,595 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:47:47,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2023-12-21 13:47:47,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:47:47,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2023-12-21 13:47:47,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=230, Invalid=3192, Unknown=0, NotChecked=0, Total=3422 [2023-12-21 13:47:47,596 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) [2023-12-21 13:49:17,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:49:17,330 INFO L93 Difference]: Finished difference Result 599849 states and 747978 transitions. [2023-12-21 13:49:17,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 543 states. [2023-12-21 13:49:17,331 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 [2023-12-21 13:49:17,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:49:18,032 INFO L225 Difference]: With dead ends: 599849 [2023-12-21 13:49:18,032 INFO L226 Difference]: Without dead ends: 551094 [2023-12-21 13:49:18,159 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 766 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 596 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151459 ImplicationChecksByTransitivity, 74.9s TimeCoverageRelationStatistics Valid=38064, Invalid=318942, Unknown=0, NotChecked=0, Total=357006 [2023-12-21 13:49:18,160 INFO L413 NwaCegarLoop]: 1373 mSDtfsCounter, 10274 mSDsluCounter, 39661 mSDsCounter, 0 mSdLazyCounter, 17628 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10274 SdHoareTripleChecker+Valid, 41034 SdHoareTripleChecker+Invalid, 17720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 17628 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.3s IncrementalHoareTripleChecker+Time [2023-12-21 13:49:18,160 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10274 Valid, 41034 Invalid, 17720 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [92 Valid, 17628 Invalid, 0 Unknown, 0 Unchecked, 11.3s Time] [2023-12-21 13:49:18,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551094 states. [2023-12-21 13:49:21,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551094 to 124407. [2023-12-21 13:49:22,019 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) [2023-12-21 13:49:22,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124407 states to 124407 states and 157047 transitions. [2023-12-21 13:49:22,219 INFO L78 Accepts]: Start accepts. Automaton has 124407 states and 157047 transitions. Word has length 103 [2023-12-21 13:49:22,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:49:22,219 INFO L495 AbstractCegarLoop]: Abstraction has 124407 states and 157047 transitions. [2023-12-21 13:49:22,219 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) [2023-12-21 13:49:22,219 INFO L276 IsEmpty]: Start isEmpty. Operand 124407 states and 157047 transitions. [2023-12-21 13:49:22,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-12-21 13:49:22,239 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:49:22,240 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] [2023-12-21 13:49:22,251 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-21 13:49:22,444 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 [2023-12-21 13:49:22,444 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:49:22,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:49:22,445 INFO L85 PathProgramCache]: Analyzing trace with hash -833523199, now seen corresponding path program 1 times [2023-12-21 13:49:22,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:49:22,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943203909] [2023-12-21 13:49:22,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:49:22,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:49:22,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:49:22,817 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:49:22,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:49:22,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943203909] [2023-12-21 13:49:22,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943203909] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:49:22,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [391371999] [2023-12-21 13:49:22,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:49:22,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:49:22,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:49:22,818 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) [2023-12-21 13:49:22,821 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-21 13:49:22,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:49:22,952 INFO L262 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-21 13:49:22,953 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:49:23,281 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:49:23,281 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:49:23,826 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:49:23,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [391371999] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:49:23,826 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:49:23,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11, 11] total 27 [2023-12-21 13:49:23,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547973474] [2023-12-21 13:49:23,827 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:49:23,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-12-21 13:49:23,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:49:23,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-12-21 13:49:23,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=627, Unknown=0, NotChecked=0, Total=702 [2023-12-21 13:49:23,828 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) [2023-12-21 13:50:05,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:50:05,155 INFO L93 Difference]: Finished difference Result 516780 states and 646104 transitions. [2023-12-21 13:50:05,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 657 states. [2023-12-21 13:50:05,155 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 [2023-12-21 13:50:05,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:50:05,780 INFO L225 Difference]: With dead ends: 516780 [2023-12-21 13:50:05,780 INFO L226 Difference]: Without dead ends: 426138 [2023-12-21 13:50:05,931 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 868 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 680 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216577 ImplicationChecksByTransitivity, 35.1s TimeCoverageRelationStatistics Valid=47546, Invalid=416896, Unknown=0, NotChecked=0, Total=464442 [2023-12-21 13:50:05,931 INFO L413 NwaCegarLoop]: 560 mSDtfsCounter, 5825 mSDsluCounter, 6843 mSDsCounter, 0 mSdLazyCounter, 8648 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s 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, 4.5s IncrementalHoareTripleChecker+Time [2023-12-21 13:50:05,931 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5825 Valid, 7403 Invalid, 8694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 8648 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2023-12-21 13:50:06,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426138 states. [2023-12-21 13:50:09,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426138 to 134476. [2023-12-21 13:50:09,669 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) [2023-12-21 13:50:10,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134476 states to 134476 states and 168944 transitions. [2023-12-21 13:50:10,064 INFO L78 Accepts]: Start accepts. Automaton has 134476 states and 168944 transitions. Word has length 103 [2023-12-21 13:50:10,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:50:10,064 INFO L495 AbstractCegarLoop]: Abstraction has 134476 states and 168944 transitions. [2023-12-21 13:50:10,065 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) [2023-12-21 13:50:10,065 INFO L276 IsEmpty]: Start isEmpty. Operand 134476 states and 168944 transitions. [2023-12-21 13:50:10,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-12-21 13:50:10,070 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:50:10,070 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] [2023-12-21 13:50:10,077 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-21 13:50:10,275 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 [2023-12-21 13:50:10,275 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:50:10,276 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:50:10,276 INFO L85 PathProgramCache]: Analyzing trace with hash -350849956, now seen corresponding path program 1 times [2023-12-21 13:50:10,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:50:10,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990718447] [2023-12-21 13:50:10,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:50:10,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:50:10,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:50:10,436 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:50:10,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:50:10,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990718447] [2023-12-21 13:50:10,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990718447] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:50:10,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2064410185] [2023-12-21 13:50:10,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:50:10,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:50:10,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:50:10,445 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) [2023-12-21 13:50:10,446 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-21 13:50:10,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:50:10,564 INFO L262 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-21 13:50:10,566 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:50:11,370 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:50:11,370 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:50:11,916 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:50:11,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2064410185] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:50:11,916 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:50:11,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 10] total 22 [2023-12-21 13:50:11,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414714415] [2023-12-21 13:50:11,917 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:50:11,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-21 13:50:11,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:50:11,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-21 13:50:11,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=390, Unknown=0, NotChecked=0, Total=462 [2023-12-21 13:50:11,918 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) [2023-12-21 13:50:14,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:50:14,329 INFO L93 Difference]: Finished difference Result 330651 states and 412912 transitions. [2023-12-21 13:50:14,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-21 13:50:14,331 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 [2023-12-21 13:50:14,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:50:14,668 INFO L225 Difference]: With dead ends: 330651 [2023-12-21 13:50:14,668 INFO L226 Difference]: Without dead ends: 287430 [2023-12-21 13:50:14,690 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 [2023-12-21 13:50:14,690 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 [2023-12-21 13:50:14,690 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] [2023-12-21 13:50:14,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287430 states. [2023-12-21 13:50:16,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287430 to 149931. [2023-12-21 13:50:16,514 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) [2023-12-21 13:50:16,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149931 states to 149931 states and 188186 transitions. [2023-12-21 13:50:16,902 INFO L78 Accepts]: Start accepts. Automaton has 149931 states and 188186 transitions. Word has length 104 [2023-12-21 13:50:16,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:50:16,903 INFO L495 AbstractCegarLoop]: Abstraction has 149931 states and 188186 transitions. [2023-12-21 13:50:16,903 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) [2023-12-21 13:50:16,903 INFO L276 IsEmpty]: Start isEmpty. Operand 149931 states and 188186 transitions. [2023-12-21 13:50:16,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-12-21 13:50:16,908 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:50:16,908 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] [2023-12-21 13:50:16,915 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-21 13:50:17,108 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 [2023-12-21 13:50:17,109 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:50:17,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:50:17,110 INFO L85 PathProgramCache]: Analyzing trace with hash 1340152130, now seen corresponding path program 1 times [2023-12-21 13:50:17,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:50:17,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50266939] [2023-12-21 13:50:17,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:50:17,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:50:17,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:50:17,973 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:50:17,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:50:17,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50266939] [2023-12-21 13:50:17,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50266939] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:50:17,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1157899061] [2023-12-21 13:50:17,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:50:17,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:50:17,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:50:17,976 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) [2023-12-21 13:50:17,979 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-21 13:50:18,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:50:18,100 INFO L262 TraceCheckSpWp]: Trace formula consists of 446 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-21 13:50:18,102 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:50:18,259 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-21 13:50:18,260 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:50:18,618 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-21 13:50:18,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1157899061] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:50:18,618 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:50:18,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 6, 6] total 31 [2023-12-21 13:50:18,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269052016] [2023-12-21 13:50:18,618 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:50:18,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-12-21 13:50:18,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:50:18,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-12-21 13:50:18,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=849, Unknown=0, NotChecked=0, Total=930 [2023-12-21 13:50:18,620 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) [2023-12-21 13:50:24,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:50:24,346 INFO L93 Difference]: Finished difference Result 403709 states and 506746 transitions. [2023-12-21 13:50:24,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2023-12-21 13:50:24,347 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 [2023-12-21 13:50:24,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:50:24,736 INFO L225 Difference]: With dead ends: 403709 [2023-12-21 13:50:24,736 INFO L226 Difference]: Without dead ends: 253815 [2023-12-21 13:50:24,794 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 200 SyntacticMatches, 1 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4301 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=1817, Invalid=12225, Unknown=0, NotChecked=0, Total=14042 [2023-12-21 13:50:24,795 INFO L413 NwaCegarLoop]: 239 mSDtfsCounter, 3341 mSDsluCounter, 5002 mSDsCounter, 0 mSdLazyCounter, 3120 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s 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, 1.5s IncrementalHoareTripleChecker+Time [2023-12-21 13:50:24,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3341 Valid, 5241 Invalid, 3129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 3120 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-21 13:50:24,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253815 states. [2023-12-21 13:50:26,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253815 to 186862. [2023-12-21 13:50:26,940 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) [2023-12-21 13:50:27,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186862 states to 186862 states and 234220 transitions. [2023-12-21 13:50:27,406 INFO L78 Accepts]: Start accepts. Automaton has 186862 states and 234220 transitions. Word has length 104 [2023-12-21 13:50:27,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:50:27,407 INFO L495 AbstractCegarLoop]: Abstraction has 186862 states and 234220 transitions. [2023-12-21 13:50:27,407 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) [2023-12-21 13:50:27,407 INFO L276 IsEmpty]: Start isEmpty. Operand 186862 states and 234220 transitions. [2023-12-21 13:50:27,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-12-21 13:50:27,411 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:50:27,411 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] [2023-12-21 13:50:27,424 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-12-21 13:50:27,624 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 [2023-12-21 13:50:27,624 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:50:27,625 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:50:27,625 INFO L85 PathProgramCache]: Analyzing trace with hash 739161207, now seen corresponding path program 1 times [2023-12-21 13:50:27,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:50:27,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115592139] [2023-12-21 13:50:27,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:50:27,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:50:27,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:50:27,667 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-21 13:50:27,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:50:27,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115592139] [2023-12-21 13:50:27,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115592139] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 13:50:27,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 13:50:27,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 13:50:27,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989792853] [2023-12-21 13:50:27,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 13:50:27,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 13:50:27,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:50:27,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 13:50:27,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:50:27,668 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) [2023-12-21 13:50:28,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:50:28,536 INFO L93 Difference]: Finished difference Result 325057 states and 407421 transitions. [2023-12-21 13:50:28,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 13:50:28,537 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 [2023-12-21 13:50:28,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:50:28,711 INFO L225 Difference]: With dead ends: 325057 [2023-12-21 13:50:28,712 INFO L226 Difference]: Without dead ends: 138330 [2023-12-21 13:50:28,791 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 13:50:28,791 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 [2023-12-21 13:50:28,791 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] [2023-12-21 13:50:28,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138330 states. [2023-12-21 13:50:30,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138330 to 138330. [2023-12-21 13:50:30,346 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) [2023-12-21 13:50:30,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138330 states to 138330 states and 170575 transitions. [2023-12-21 13:50:30,573 INFO L78 Accepts]: Start accepts. Automaton has 138330 states and 170575 transitions. Word has length 104 [2023-12-21 13:50:30,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:50:30,574 INFO L495 AbstractCegarLoop]: Abstraction has 138330 states and 170575 transitions. [2023-12-21 13:50:30,574 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) [2023-12-21 13:50:30,574 INFO L276 IsEmpty]: Start isEmpty. Operand 138330 states and 170575 transitions. [2023-12-21 13:50:30,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-12-21 13:50:30,577 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:50:30,577 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] [2023-12-21 13:50:30,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-12-21 13:50:30,578 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:50:30,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:50:30,578 INFO L85 PathProgramCache]: Analyzing trace with hash 1092994019, now seen corresponding path program 1 times [2023-12-21 13:50:30,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:50:30,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915097479] [2023-12-21 13:50:30,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:50:30,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:50:30,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:50:31,562 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:50:31,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:50:31,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915097479] [2023-12-21 13:50:31,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915097479] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:50:31,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1599692488] [2023-12-21 13:50:31,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:50:31,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:50:31,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:50:31,563 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) [2023-12-21 13:50:31,568 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-21 13:50:31,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:50:31,675 INFO L262 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 35 conjunts are in the unsatisfiable core [2023-12-21 13:50:31,678 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:50:33,488 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:50:33,488 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:50:36,885 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:50:36,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1599692488] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:50:36,885 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:50:36,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 20] total 55 [2023-12-21 13:50:36,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965730937] [2023-12-21 13:50:36,885 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:50:36,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2023-12-21 13:50:36,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:50:36,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2023-12-21 13:50:36,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=2779, Unknown=0, NotChecked=0, Total=2970 [2023-12-21 13:50:36,886 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) [2023-12-21 13:51:24,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:51:24,846 INFO L93 Difference]: Finished difference Result 413867 states and 504628 transitions. [2023-12-21 13:51:24,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 280 states. [2023-12-21 13:51:24,847 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 [2023-12-21 13:51:24,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:51:25,250 INFO L225 Difference]: With dead ends: 413867 [2023-12-21 13:51:25,251 INFO L226 Difference]: Without dead ends: 379551 [2023-12-21 13:51:25,509 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 501 GetRequests, 171 SyntacticMatches, 1 SemanticMatches, 329 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37948 ImplicationChecksByTransitivity, 38.6s TimeCoverageRelationStatistics Valid=12571, Invalid=96659, Unknown=0, NotChecked=0, Total=109230 [2023-12-21 13:51:25,514 INFO L413 NwaCegarLoop]: 848 mSDtfsCounter, 6494 mSDsluCounter, 25764 mSDsCounter, 0 mSdLazyCounter, 10968 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6494 SdHoareTripleChecker+Valid, 26612 SdHoareTripleChecker+Invalid, 10993 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 10968 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time [2023-12-21 13:51:25,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6494 Valid, 26612 Invalid, 10993 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [25 Valid, 10968 Invalid, 0 Unknown, 0 Unchecked, 9.7s Time] [2023-12-21 13:51:25,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379551 states. [2023-12-21 13:51:27,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379551 to 162983. [2023-12-21 13:51:27,798 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) [2023-12-21 13:51:27,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162983 states to 162983 states and 200514 transitions. [2023-12-21 13:51:27,997 INFO L78 Accepts]: Start accepts. Automaton has 162983 states and 200514 transitions. Word has length 104 [2023-12-21 13:51:27,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:51:27,997 INFO L495 AbstractCegarLoop]: Abstraction has 162983 states and 200514 transitions. [2023-12-21 13:51:27,998 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) [2023-12-21 13:51:27,998 INFO L276 IsEmpty]: Start isEmpty. Operand 162983 states and 200514 transitions. [2023-12-21 13:51:28,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-12-21 13:51:28,001 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:51:28,001 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] [2023-12-21 13:51:28,008 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-21 13:51:28,206 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 [2023-12-21 13:51:28,208 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:51:28,208 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:51:28,208 INFO L85 PathProgramCache]: Analyzing trace with hash -1821546295, now seen corresponding path program 1 times [2023-12-21 13:51:28,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:51:28,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51478603] [2023-12-21 13:51:28,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:51:28,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:51:28,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:51:28,824 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:51:28,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:51:28,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51478603] [2023-12-21 13:51:28,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51478603] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:51:28,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1890742442] [2023-12-21 13:51:28,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:51:28,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:51:28,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:51:28,826 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) [2023-12-21 13:51:28,826 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-21 13:51:28,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:51:28,931 INFO L262 TraceCheckSpWp]: Trace formula consists of 446 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-21 13:51:28,932 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 13:51:29,415 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:51:29,415 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 13:51:29,950 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:51:29,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1890742442] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-21 13:51:29,950 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-21 13:51:29,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 12] total 35 [2023-12-21 13:51:29,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332198507] [2023-12-21 13:51:29,950 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-21 13:51:29,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-12-21 13:51:29,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 13:51:29,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-12-21 13:51:29,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=1059, Unknown=0, NotChecked=0, Total=1190 [2023-12-21 13:51:29,951 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) [2023-12-21 13:51:31,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 13:51:31,904 INFO L93 Difference]: Finished difference Result 300860 states and 369871 transitions. [2023-12-21 13:51:31,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-12-21 13:51:31,905 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 [2023-12-21 13:51:31,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 13:51:32,361 INFO L225 Difference]: With dead ends: 300860 [2023-12-21 13:51:32,361 INFO L226 Difference]: Without dead ends: 254117 [2023-12-21 13:51:32,413 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 186 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 858 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=914, Invalid=3246, Unknown=0, NotChecked=0, Total=4160 [2023-12-21 13:51:32,413 INFO L413 NwaCegarLoop]: 388 mSDtfsCounter, 2339 mSDsluCounter, 5075 mSDsCounter, 0 mSdLazyCounter, 1092 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 13:51:32,413 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2339 Valid, 5463 Invalid, 1105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1092 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 13:51:32,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254117 states. [2023-12-21 13:51:34,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254117 to 157245. [2023-12-21 13:51:34,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157245 states, 157244 states have (on average 1.2265587240212663) internal successors, (192869), 157244 states have internal predecessors, (192869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 13:51:34,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157245 states to 157245 states and 192869 transitions. [2023-12-21 13:51:34,480 INFO L78 Accepts]: Start accepts. Automaton has 157245 states and 192869 transitions. Word has length 104 [2023-12-21 13:51:34,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 13:51:34,480 INFO L495 AbstractCegarLoop]: Abstraction has 157245 states and 192869 transitions. [2023-12-21 13:51:34,481 INFO L496 AbstractCegarLoop]: INTERPOLANT 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) [2023-12-21 13:51:34,481 INFO L276 IsEmpty]: Start isEmpty. Operand 157245 states and 192869 transitions. [2023-12-21 13:51:34,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-12-21 13:51:34,483 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 13:51:34,483 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] [2023-12-21 13:51:34,488 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-21 13:51:34,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2023-12-21 13:51:34,684 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 13:51:34,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 13:51:34,684 INFO L85 PathProgramCache]: Analyzing trace with hash 2109038980, now seen corresponding path program 1 times [2023-12-21 13:51:34,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 13:51:34,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264415870] [2023-12-21 13:51:34,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:51:34,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 13:51:34,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:51:35,534 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 13:51:35,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 13:51:35,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264415870] [2023-12-21 13:51:35,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264415870] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 13:51:35,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1203570129] [2023-12-21 13:51:35,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 13:51:35,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 13:51:35,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 13:51:35,535 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 13:51:35,536 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-21 13:51:35,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 13:51:35,648 INFO L262 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 61 conjunts are in the unsatisfiable core [2023-12-21 13:51:35,650 INFO L285 TraceCheckSpWp]: Computing forward predicates...